class WebhookPowerDriver(PowerDriver):
name = "webhook"
chassis = False
can_probe = False
can_set_boot_order = False
description = "Webhook"
settings = [
make_setting_field("power_on_uri",
"URI to power on the node",
required=True),
make_setting_field("power_off_uri",
"URI to power off the node",
required=True),
make_setting_field(
"power_query_uri",
"URI to query the nodes power status",
required=True,
),
make_setting_field(
"power_on_regex",
"Regex to confirm the node is on",
default=r"status.*\:.*running",
required=True,
),
make_setting_field(
"power_off_regex",
"Regex to confirm the node is off",
default=r"status.*\:.*stopped",
required=True,
),
make_setting_field("power_user", "Power user"),
make_setting_field("power_pass",
"Power password",
field_type="password"),
make_setting_field(
"power_token",
"Power token, will be used in place of power_user and power_pass",
field_type="password",
),
make_setting_field(
"power_verify_ssl",
"Verify SSL connections with system CA certificates",
field_type="choice",
required=True,
choices=SSL_INSECURE_CHOICES,
default=SSL_INSECURE_NO,
),
]
# Use the power_query_uri as that is the URL MAAS uses the most.
ip_extractor = make_ip_extractor("power_query_uri",
IP_EXTRACTOR_PATTERNS.URL)
def _make_auth_headers(self, system_id, context, extra_headers=None):
"""Return authentication headers."""
power_user = context.get("power_user")
power_pass = context.get("power_pass")
power_token = context.get("power_token")
if extra_headers is None:
extra_headers = {}
# Don't include a Content-Type here, some services will reject the
# request unless content is expected.
headers = {
b"User-Agent": [f"MAAS {get_running_version()}".encode()],
b"Accept": [b"application/json"],
b"System_Id": [system_id.encode()],
**extra_headers,
}
if power_token:
headers[b"Authorization"] = [f"Bearer {power_token}".encode()]
elif power_user and power_pass:
# Base64 encoded per RFC7617
headers[b"Authorization"] = [
b"Basic " +
base64.b64encode(f"{power_user}:{power_pass}".encode())
]
return Headers(headers)
def _webhook_request(self,
method,
uri,
headers,
verify_ssl=False,
bodyProducer=None):
"""Send the webhook request and return the response."""
agent = RedirectAgent(
Agent(
reactor,
contextFactory=WebClientContextFactory(verify=verify_ssl),
))
d = agent.request(
method,
uri,
headers=headers,
bodyProducer=bodyProducer,
)
def render_response(response):
"""Render the HTTPS response received."""
def eb_catch_partial(failure):
# Twisted is raising PartialDownloadError because the responses
# do not contain a Content-Length header. Since every response
# holds the whole body we just take the result.
failure.trap(PartialDownloadError)
if int(failure.value.status) == HTTPStatus.OK:
return failure.value.response
else:
return failure
# Error out if the response has a status code of 400 or above.
if response.code >= int(HTTPStatus.BAD_REQUEST):
# if there was no trailing slash, retry with a trailing slash
# because of varying requirements of BMC manufacturers
if response.code == HTTPStatus.NOT_FOUND and uri[-1] != b"/":
d = agent.request(
method,
uri + b"/",
headers=headers,
bodyProducer=bodyProducer,
)
else:
raise PowerActionError(
"Request failed with response status code: "
"%s." % response.code)
d = readBody(response)
d.addErrback(eb_catch_partial)
return d
d.addCallback(render_response)
return d
def detect_missing_packages(self):
# uses Twisted http client - nothing to look for!
return []
@asynchronous
@inlineCallbacks
def power_on(self, system_id, context):
"""Power on webhook."""
yield self._webhook_request(
b"POST",
context["power_on_uri"].encode(),
self._make_auth_headers(system_id, context),
context.get("power_verify_ssl") == SSL_INSECURE_YES,
)
@asynchronous
@inlineCallbacks
def power_off(self, system_id, context):
"""Power off webhook."""
yield self._webhook_request(
b"POST",
context["power_off_uri"].encode(),
self._make_auth_headers(system_id, context),
context.get("power_verify_ssl") == SSL_INSECURE_YES,
)
@asynchronous
@inlineCallbacks
def power_query(self, system_id, context):
"""Power query webhook."""
power_on_regex = context.get("power_on_regex")
power_off_regex = context.get("power_off_regex")
node_data = yield self._webhook_request(
b"GET",
context["power_query_uri"].encode(),
self._make_auth_headers(system_id, context),
context.get("power_verify_ssl") == SSL_INSECURE_YES,
)
node_data = node_data.decode()
if power_on_regex and re.search(power_on_regex, node_data) is not None:
return "on"
elif (power_off_regex
and re.search(power_off_regex, node_data) is not None):
return "off"
else:
return "unknown"
class DLIPowerDriver(PowerDriver):
name = "dli"
chassis = True
can_probe = False
description = "Digital Loggers, Inc. PDU"
settings = [
make_setting_field(
"outlet_id", "Outlet ID", scope=SETTING_SCOPE.NODE, required=True
),
make_setting_field("power_address", "Power address", required=True),
make_setting_field("power_user", "Power user"),
make_setting_field(
"power_pass", "Power password", field_type="password"
),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
if not shell.has_command_available("wget"):
return ["wget"]
return []
def _set_outlet_state(
self,
power_change,
outlet_id=None,
power_user=None,
power_pass=None,
power_address=None,
**extra
):
"""Power DLI outlet ON/OFF."""
try:
url = "http://%s:%s@%s/outlet?%s=%s" % (
power_user,
power_pass,
power_address,
outlet_id,
power_change,
)
# --auth-no-challenge: send Basic HTTP authentication
# information without first waiting for the server's challenge.
call_and_check(
["wget", "--auth-no-challenge", "-O", "/dev/null", url],
env=get_env_with_locale(),
)
except ExternalProcessError as e:
raise PowerActionError(
"Failed to power %s outlet %s: %s"
% (power_change, outlet_id, e.output_as_unicode)
)
def _query_outlet_state(
self,
outlet_id=None,
power_user=None,
power_pass=None,
power_address=None,
**extra
):
"""Query DLI outlet power state.
Sample snippet of query output from DLI:
...
<!--
function reg() {
window.open('http://www.digital-loggers.com/reg.html?SN=LPC751740');
}
//-->
</script>
</head>
<!-- state=02 lock=00 -->
<body alink="#0000FF" vlink="#0000FF">
<FONT FACE="Arial, Helvetica, Sans-Serif">
...
"""
try:
url = "http://%s:%s@%s/index.htm" % (
power_user,
power_pass,
power_address,
)
# --auth-no-challenge: send Basic HTTP authentication
# information without first waiting for the server's challenge.
wget_output = call_and_check(
["wget", "--auth-no-challenge", "-qO-", url],
env=get_env_with_locale(),
)
wget_output = wget_output.decode("utf-8")
match = re.search("<!-- state=([0-9a-fA-F]+)", wget_output)
if match is None:
raise PowerError(
"Unable to extract power state for outlet %s from "
"wget output: %s" % (outlet_id, wget_output)
)
else:
state = match.group(1)
# state is a bitmap of the DLI's oulet states, where bit 0
# corresponds to oulet 1's power state, bit 1 corresponds to
# outlet 2's power state, etc., encoded as hexadecimal.
if (int(state, 16) & (1 << int(outlet_id) - 1)) > 0:
return "on"
else:
return "off"
except ExternalProcessError as e:
raise PowerActionError(
"Failed to power query outlet %s: %s"
% (outlet_id, e.output_as_unicode)
)
def power_on(self, system_id, context):
"""Power on DLI outlet."""
# Power off the outlet if it is currently on
if self._query_outlet_state(**context) == "on":
self._set_outlet_state("OFF", **context)
sleep(1)
if self._query_outlet_state(**context) != "off":
raise PowerError(
"Unable to power off outlet %s that is already on."
% context["outlet_id"]
)
self._set_outlet_state("ON", **context)
def power_off(self, system_id, context):
"""Power off DLI outlet."""
self._set_outlet_state("OFF", **context)
def power_query(self, system_id, context):
"""Power query DLI outlet."""
return self._query_outlet_state(**context)
class AMTPowerDriver(PowerDriver):
name = 'amt'
description = "Intel AMT"
settings = [
make_setting_field('power_pass',
"Power password",
field_type='password'),
make_setting_field('power_address', "Power address", required=True),
]
ip_extractor = make_ip_extractor('power_address')
def detect_missing_packages(self):
missing_packages = []
for binary, package in REQUIRED_PACKAGES:
if not shell.has_command_available(binary):
missing_packages.append(package)
return missing_packages
@typed
def _render_wsman_state_xml(self, power_change) -> bytes:
"""Render wsman state XML."""
wsman_state_filename = join(dirname(__file__), "amt.wsman-state.xml")
wsman_state_ns = {
"p": ("http://schemas.dmtf.org/wbem/wscim/1/cim-schema"
"/2/CIM_PowerManagementService"),
}
tree = etree.parse(wsman_state_filename)
[ps] = tree.xpath("//p:PowerState", namespaces=wsman_state_ns)
power_states = {'on': '2', 'off': '8', 'restart': '10'}
ps.text = power_states[power_change]
return etree.tostring(tree)
@typed
def _parse_multiple_xml_docs(self, xml: bytes):
"""Parse multiple XML documents.
Each document must commence with an XML document declaration, i.e.
<?xml ...
Works around a weird decision in `wsman` where it returns multiple XML
documents in a single stream.
"""
xmldecl = re.compile(b'<[?]xml\\s')
xmldecls = xmldecl.finditer(xml)
starts = [match.start() for match in xmldecls]
ends = starts[1:] + [len(xml)]
frags = (xml[start:end] for start, end in zip(starts, ends))
return (etree.fromstring(frag) for frag in frags)
@typed
def get_power_state(self, xml: bytes) -> str:
"""Get PowerState text from XML."""
namespaces = {
"h": ("http://schemas.dmtf.org/wbem/wscim/1/cim-schema"
"/2/CIM_AssociatedPowerManagementService"),
}
state = next(
chain.from_iterable(
doc.xpath('//h:PowerState/text()', namespaces=namespaces)
for doc in self._parse_multiple_xml_docs(xml)))
return state
def _get_amt_environment(self, power_pass):
"""Set and return environment for AMT."""
env = shell.select_c_utf8_locale()
env['AMT_PASSWORD'] = power_pass
return env
def _set_pxe_boot(self, ip_address, power_pass):
"""Set to PXE for next boot."""
wsman_pxe_options = {
'ChangeBootOrder':
(join(dirname(__file__), "amt.wsman-pxe.xml"),
('http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/'
'CIM_BootConfigSetting?InstanceID="Intel(r) '
'AMT: Boot Configuration 0"')),
'SetBootConfigRole':
(join(dirname(__file__), "amt.wsman-boot-config.xml"),
('http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/'
'CIM_BootService?SystemCreationClassName='
'"CIM_ComputerSystem",SystemName="Intel(r) AMT"'
',CreationClassName="CIM_BootService",Name="Intel(r)'
' AMT Boot Service"')),
}
wsman_opts = ('--port', '16992', '--hostname', ip_address,
'--username', 'admin', '--password', power_pass,
'--noverifypeer', '--noverifyhost')
# Change boot order to PXE and enable boot config request
for method, (schema_file, schema_uri) in wsman_pxe_options.items():
with open(schema_file, "rb") as fd:
command = 'wsman', 'invoke', '--method', method, schema_uri
command += wsman_opts + ('--input', '-')
self._run(command, power_pass, stdin=fd.read())
@typed
def _run(self,
command: tuple,
power_pass: str,
stdin: bytes = None) -> bytes:
"""Run a subprocess with stdin."""
env = self._get_amt_environment(power_pass)
process = Popen(command, stdin=PIPE, stdout=PIPE, stderr=PIPE, env=env)
stdout, stderr = process.communicate(stdin)
if process.returncode != 0:
raise PowerActionError(
"Failed to run command: %s with error: %s" %
(command, stderr.decode("utf-8", "replace")))
return stdout
@typed
def _issue_amttool_command(self,
cmd: str,
ip_address: str,
power_pass: str,
amttool_boot_mode=None,
stdin=None) -> bytes:
"""Perform a command using amttool."""
command = ('amttool', ip_address, cmd)
if cmd in ('power-cycle', 'powerup'):
command += (amttool_boot_mode, )
return self._run(command, power_pass, stdin=stdin)
@typed
def _issue_wsman_command(self, power_change: str, ip_address: str,
power_pass: str) -> bytes:
"""Perform a command using wsman."""
wsman_power_schema_uri = (
'http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/'
'CIM_PowerManagementService?SystemCreationClassName='
'"CIM_ComputerSystem",SystemName="Intel(r) AMT"'
',CreationClassName="CIM_PowerManagementService",Name='
'"Intel(r) AMT Power Management Service"')
wsman_query_schema_uri = (
'http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/'
'CIM_AssociatedPowerManagementService')
wsman_opts = ('--port', '16992', '--hostname', ip_address,
'--username', 'admin', '--password', power_pass,
'--noverifypeer', '--noverifyhost')
if power_change in ('on', 'off', 'restart'):
stdin = self._render_wsman_state_xml(power_change)
command = ('wsman', 'invoke', '--method',
'RequestPowerStateChange',
wsman_power_schema_uri) + wsman_opts + ('--input', '-')
elif power_change == 'query':
stdin = None # No input for query
command = ('wsman', 'enumerate', wsman_query_schema_uri
) + wsman_opts + ('--optimize', '--encoding', 'utf-8')
return self._run(command, power_pass, stdin=stdin)
def amttool_query_state(self, ip_address, power_pass):
"""Ask for node's power state: 'on' or 'off', via amttool."""
# Retry the state if it fails because it often fails the first time
output = None
for _ in range(10):
output = self._issue_amttool_command('info', ip_address,
power_pass)
if output is not None and len(output) > 0:
break
# Wait 1 second between retries. AMT controllers are generally
# very light and may not be comfortable with more frequent
# queries.
sleep(1)
if output is None:
raise PowerActionError("amttool power querying failed.")
# Ensure that from this point forward that output is a str.
output = output.decode("utf-8")
# Wide awake (S0), or asleep (S1-S4), but not a clean slate that
# will lead to a fresh boot.
if 'S5' in output:
return 'off'
for state in ('S0', 'S1', 'S2', 'S3', 'S4'):
if state in output:
return 'on'
raise PowerActionError("Got unknown power state from node: %s" % state)
def wsman_query_state(self, ip_address, power_pass):
"""Ask for node's power state: 'on' or 'off', via wsman."""
# Retry the state if it fails because it often fails the first time.
output = None
for _ in range(10):
output = self._issue_wsman_command('query', ip_address, power_pass)
if output is not None and len(output) > 0:
break
# Wait 1 second between retries. AMT controllers are generally
# very light and may not be comfortable with more frequent
# queries.
sleep(1)
if output is None:
raise PowerActionError("wsman power querying failed.")
else:
state = self.get_power_state(output)
# There are a LOT of possible power states
# 1: Other 9: Power Cycle (Off-Hard)
# 2: On 10: Master Bus Reset
# 3: Sleep - Light 11: Diagnostic Interrupt (NMI)
# 4: Sleep - Deep 12: Off - Soft Graceful
# 5: Power Cycle (Off - Soft) 13: Off - Hard Graceful
# 6: Off - Hard 14: Master Bus Reset Graceful
# 7: Hibernate (Off - Soft) 15: Power Cycle (Off-Soft Graceful)
# 8: Off - Soft 16: Power Cycle (Off-Hard Graceful)
# 17: Diagnostic Interrupt (INIT)
# These are all power states that indicate that the system is
# either ON or will resume function in an ON or Powered Up
# state (e.g. being power cycled currently)
if state in ('2', '3', '4', '5', '7', '9', '10', '14', '15', '16'):
return 'on'
elif state in ('6', '8', '12', '13'):
return 'off'
else:
raise PowerActionError(
"Got unknown power state from node: %s" % state)
def amttool_restart(self, ip_address, power_pass, amttool_boot_mode):
"""Restart the node via amttool."""
self._issue_amttool_command('power_cycle',
ip_address,
power_pass,
amttool_boot_mode=amttool_boot_mode,
stdin=b'yes')
def amttool_power_on(self, ip_address, power_pass, amttool_boot_mode):
"""Power on the node via amttool."""
# Try several times. Power commands often fail the first time.
for _ in range(10):
# Issue the AMT command; amttool will prompt for confirmation.
self._issue_amttool_command('powerup',
ip_address,
power_pass,
amttool_boot_mode=amttool_boot_mode,
stdin=b'yes')
if self.amttool_query_state(ip_address, power_pass) == 'on':
return
sleep(1)
raise PowerActionError("Machine is not powering on. Giving up.")
def wsman_power_on(self, ip_address, power_pass, restart=False):
"""Power on the node via wsman."""
power_command = 'restart' if restart else 'on'
self._set_pxe_boot(ip_address, power_pass)
self._issue_wsman_command(power_command, ip_address, power_pass)
# Check power state several times. It usually takes a second or
# two to get the correct state.
for _ in range(10):
if self.wsman_query_state(ip_address, power_pass) == 'on':
return # Success. Machine is on.
sleep(1)
raise PowerActionError("Machine is not powering on. Giving up.")
def amttool_power_off(self, ip_address, power_pass):
"""Power off the node via amttool."""
# Try several times. Power commands often fail the first time.
for _ in range(10):
if self.amttool_query_state(ip_address, power_pass) == 'off':
# Success. Machine is off.
return
# Issue the AMT command; amttool will prompt for confirmation.
self._issue_amttool_command('powerdown',
ip_address,
power_pass,
stdin=b'yes')
sleep(1)
raise PowerActionError("Machine is not powering off. Giving up.")
def wsman_power_off(self, ip_address, power_pass):
"""Power off the node via wsman."""
# Issue the wsman command to change power state.
self._issue_wsman_command('off', ip_address, power_pass)
# Check power state several times. It usually takes a second or
# two to get the correct state.
for _ in range(10):
if self.wsman_query_state(ip_address, power_pass) == 'off':
return # Success. Machine is off.
else:
sleep(1)
raise PowerActionError("Machine is not powering off. Giving up.")
def _get_amt_command(self, ip_address, power_pass):
"""Retrieve AMT command to use, either amttool or wsman
(if AMT version > 8), for the given system.
"""
# XXX bug=1331214
# Check if the AMT ver > 8
# If so, we need wsman, not amttool
env = self._get_amt_environment(power_pass)
process = Popen(('amttool', ip_address, 'info'),
stdout=PIPE,
stderr=PIPE,
env=env)
stdout, stderr = process.communicate()
stdout = stdout.decode("utf-8")
stderr = stderr.decode("utf-8")
if stdout == "" or stdout.isspace():
for error, error_info in AMT_ERRORS.items():
if error in stderr:
raise error_info.get('exception')(
error_info.get('message'))
raise PowerConnError("Unable to retrieve AMT version: %s" % stderr)
else:
match = re.search("AMT version:\s*([0-9]+)", stdout)
if match is None:
raise PowerActionError("Unable to extract AMT version from "
"amttool output: %s" % stdout)
else:
version = match.group(1)
if int(version) > 8:
return 'wsman'
else:
return 'amttool'
def _get_amttool_boot_mode(self, boot_mode):
"""Set amttool boot mode."""
# boot_mode tells us whether we're pxe booting or local booting.
# For local booting, the argument to amttool must be empty
# (NOT 'hd', it doesn't work!).
if boot_mode == 'local':
return ''
else:
return boot_mode
def _get_ip_address(self, power_address, ip_address):
"""Get the IP address of the AMT BMC."""
# The user specified power_address overrides any automatically
# determined ip_address.
if (is_power_parameter_set(power_address)
and not is_power_parameter_set(ip_address)):
return power_address
elif is_power_parameter_set(ip_address):
return ip_address
else:
raise PowerSettingError(
"No IP address provided. "
"Please update BMC configuration and try again.")
def power_on(self, system_id, context):
"""Power on AMT node."""
ip_address = self._get_ip_address(context.get('power_address'),
context.get('ip_address'))
power_pass = context.get('power_pass')
amt_command = self._get_amt_command(ip_address, power_pass)
if amt_command == 'amttool':
amttool_boot_mode = self._get_amttool_boot_mode(
context.get('boot_mode'))
if self.amttool_query_state(ip_address, power_pass) == 'on':
self.amttool_restart(ip_address, power_pass, amttool_boot_mode)
else:
self.amttool_power_on(ip_address, power_pass,
amttool_boot_mode)
elif amt_command == 'wsman':
if self.wsman_query_state(ip_address, power_pass) == 'on':
self.wsman_power_on(ip_address, power_pass, restart=True)
else:
self.wsman_power_on(ip_address, power_pass)
def power_off(self, system_id, context):
"""Power off AMT node."""
ip_address = self._get_ip_address(context.get('power_address'),
context.get('ip_address'))
power_pass = context.get('power_pass')
amt_command = self._get_amt_command(ip_address, power_pass)
if amt_command == 'amttool':
if self.amttool_query_state(ip_address, power_pass) != 'off':
self.amttool_power_off(ip_address, power_pass)
elif amt_command == 'wsman':
if self.wsman_query_state(ip_address, power_pass) != 'off':
self.wsman_power_off(ip_address, power_pass)
def power_query(self, system_id, context):
"""Power query AMT node."""
ip_address = self._get_ip_address(context.get('power_address'),
context.get('ip_address'))
power_pass = context.get('power_pass')
amt_command = self._get_amt_command(ip_address, power_pass)
if amt_command == 'amttool':
return self.amttool_query_state(ip_address, power_pass)
elif amt_command == 'wsman':
return self.wsman_query_state(ip_address, power_pass)
class RECSPowerDriver(PowerDriver):
name = "recs_box"
chassis = True
can_probe = True
description = "Christmann RECS|Box Power Driver"
settings = [
make_setting_field("node_id",
"Node ID",
scope=SETTING_SCOPE.NODE,
required=True),
make_setting_field("power_address", "Power address", required=True),
make_setting_field("power_port", "Power port"),
make_setting_field("power_user", "Power user"),
make_setting_field("power_pass",
"Power password",
field_type="password"),
]
ip_extractor = make_ip_extractor("power_address")
def power_control_recs(self, ip, port, username, password, node_id,
power_change):
"""Control the power state for the given node."""
port = 8000 if port is None or port == 0 else port
api = RECSAPI(ip, port, username, password)
if power_change == "on":
api.set_power_on_node(node_id)
elif power_change == "off":
api.set_power_off_node(node_id)
else:
raise RECSError("Unexpected MAAS power mode: %s" % power_change)
def power_state_recs(self, ip, port, username, password, node_id):
"""Return the power state for the given node."""
port = 8000 if port is None or port == 0 else port
api = RECSAPI(ip, port, username, password)
try:
power_state = api.get_node_power_state(node_id)
except urllib.error.HTTPError as e:
raise RECSError(
"Failed to retrieve power state. HTTP error code: %s" % e.code)
except urllib.error.URLError as e:
raise RECSError(
"Failed to retrieve power state. Server not reachable: %s" %
e.reason)
if power_state == "1":
return "on"
return "off"
def set_boot_source_recs(self, ip, port, username, password, node_id,
source, persistent):
"""Control the boot source for the given node."""
port = 8000 if port is None or port == 0 else port
api = RECSAPI(ip, port, username, password)
api.set_boot_source(node_id, source, persistent)
def detect_missing_packages(self):
# uses urllib http client - nothing to look for!
return []
def power_on(self, system_id, context):
"""Power on RECS node."""
power_change = "on"
ip, port, username, password, node_id = extract_recs_parameters(
context)
# Set default (persistent) boot to HDD
self.set_boot_source_recs(ip, port, username, password, node_id, "HDD",
True)
# Set next boot to PXE
self.set_boot_source_recs(ip, port, username, password, node_id, "PXE",
False)
self.power_control_recs(ip, port, username, password, node_id,
power_change)
def power_off(self, system_id, context):
"""Power off RECS node."""
power_change = "off"
ip, port, username, password, node_id = extract_recs_parameters(
context)
self.power_control_recs(ip, port, username, password, node_id,
power_change)
def power_query(self, system_id, context):
"""Power query RECS node."""
ip, port, username, password, node_id = extract_recs_parameters(
context)
return self.power_state_recs(ip, port, username, password, node_id)
class LXDPowerDriver(PowerDriver):
name = "lxd"
chassis = True
description = "LXD (virtual systems)"
settings = [
make_setting_field("power_address", "LXD address", required=True),
make_setting_field(
"instance_name",
"Instance name",
scope=SETTING_SCOPE.NODE,
required=True,
),
make_setting_field(
"password",
"LXD password (optional)",
required=False,
field_type="password",
),
]
ip_extractor = make_ip_extractor("power_address",
IP_EXTRACTOR_PATTERNS.URL)
def detect_missing_packages(self):
# python3-pylxd is a required package
# for maas and is installed by default.
return []
@typed
def get_url(self, context: dict):
"""Return url for the LXD host."""
power_address = context.get("power_address")
url = urlparse(power_address)
if not url.scheme:
# When the scheme is not included in the power address
# urlparse puts the url into path.
url = url._replace(scheme="https", netloc="%s" % url.path, path="")
if not url.port:
if url.netloc:
url = url._replace(netloc="%s:8443" % url.netloc)
else:
# Similar to above, we need to swap netloc and path.
url = url._replace(netloc="%s:8443" % url.path, path="")
return url.geturl()
@typed
def get_client(self, system_id: str, context: dict):
"""Connect and return PyLXD client."""
endpoint = self.get_url(context)
password = context.get("password")
try:
client = Client(
endpoint=endpoint,
cert=(MAAS_CERTIFICATE, MAAS_PRIVATE_KEY),
verify=False,
)
if not client.has_api_extension("virtual-machines"):
raise LXDError(
"Please upgrade your LXD host to 3.19+ for virtual machine support."
)
if not client.trusted:
if password:
client.authenticate(password)
else:
raise LXDError(
f"{system_id}: Certificate is not trusted and no password was given."
)
return client
except ClientConnectionFailed:
raise LXDError(
f"{system_id}: Failed to connect to the LXD REST API.")
@typed
def get_machine(self, system_id: str, context: dict):
"""Retrieve LXD VM."""
client = self.get_client(system_id, context)
instance_name = context.get("instance_name")
try:
machine = client.virtual_machines.get(instance_name)
except NotFound:
raise LXDError(f"{system_id}: LXD VM {instance_name} not found.")
return machine
@typed
def power_on(self, system_id: str, context: dict):
"""Power on LXD VM."""
machine = self.get_machine(system_id, context)
if LXD_VM_POWER_STATE[machine.status_code] == "off":
machine.start()
@typed
def power_off(self, system_id: str, context: dict):
"""Power off LXD VM."""
machine = self.get_machine(system_id, context)
if LXD_VM_POWER_STATE[machine.status_code] == "on":
machine.stop()
@typed
def power_query(self, system_id: str, context: dict):
"""Power query LXD VM."""
machine = self.get_machine(system_id, context)
state = machine.status_code
try:
return LXD_VM_POWER_STATE[state]
except KeyError:
raise LXDError(f"{system_id}: Unknown power status code: {state}")
class APCPowerDriver(PowerDriver):
name = 'apc'
description = "American Power Conversion (APC) PDU"
settings = [
make_setting_field('power_address', "IP for APC PDU", required=True),
make_setting_field(
'node_outlet', "APC PDU node outlet number (1-16)",
scope=SETTING_SCOPE.NODE, required=True),
make_setting_field(
'power_on_delay', "Power ON outlet delay (seconds)",
default='5'),
]
ip_extractor = make_ip_extractor('power_address')
queryable = False
def detect_missing_packages(self):
binary, package = ['snmpset', 'snmp']
if not shell.has_command_available(binary):
return [package]
return []
def run_process(self, command):
"""Run SNMP command in subprocess."""
proc = Popen(
command.split(), stdout=PIPE, stderr=PIPE,
env=get_env_with_locale())
stdout, stderr = proc.communicate()
stdout = stdout.decode("utf-8")
stderr = stderr.decode("utf-8")
if proc.returncode != 0:
raise PowerActionError(
"APC Power Driver external process error for command %s: %s"
% (command, stderr))
match = re.search("INTEGER:\s*([1-2])", stdout)
if match is None:
raise PowerActionError(
"APC Power Driver unable to extract outlet power state"
" from: %s" % stdout)
else:
return match.group(1)
def power_on(self, system_id, context):
"""Power on Apc outlet."""
if self.power_query(system_id, context) == 'on':
self.power_off(system_id, context)
sleep(float(context['power_on_delay']))
self.run_process('snmpset ' + COMMON_ARGS % (
context['power_address'], context['node_outlet']) + ' i 1')
def power_off(self, system_id, context):
"""Power off APC outlet."""
self.run_process('snmpset ' + COMMON_ARGS % (
context['power_address'], context['node_outlet']) + ' i 2')
def power_query(self, system_id, context):
"""Power query APC outlet."""
power_state = self.run_process(
'snmpget ' + COMMON_ARGS % (
context['power_address'], context['node_outlet']))
if power_state == APCState.OFF:
return 'off'
elif power_state == APCState.ON:
return 'on'
else:
raise PowerActionError(
"APC Power Driver retrieved unknown power state: %r"
% power_state)
class LXDPodDriver(PodDriver):
name = "lxd"
chassis = True
description = "LXD (virtual systems)"
settings = [
make_setting_field("power_address", "LXD address", required=True),
make_setting_field(
"instance_name",
"Instance name",
scope=SETTING_SCOPE.NODE,
required=True,
),
make_setting_field(
"password",
"LXD password (optional)",
required=False,
field_type="password",
),
]
ip_extractor = make_ip_extractor("power_address",
IP_EXTRACTOR_PATTERNS.URL)
def detect_missing_packages(self):
# python3-pylxd is a required package
# for maas and is installed by default.
return []
@typed
def get_url(self, context: dict):
"""Return url for the LXD host."""
power_address = context.get("power_address")
url = urlparse(power_address)
if not url.scheme:
# When the scheme is not included in the power address
# urlparse puts the url into path.
url = url._replace(scheme="https", netloc="%s" % url.path, path="")
if not url.port:
if url.netloc:
url = url._replace(netloc="%s:8443" % url.netloc)
else:
# Similar to above, we need to swap netloc and path.
url = url._replace(netloc="%s:8443" % url.path, path="")
return url.geturl()
@typed
@inlineCallbacks
def get_client(self, system_id: str, context: dict):
"""Connect and return PyLXD client."""
endpoint = self.get_url(context)
password = context.get("password")
try:
client = yield deferToThread(
Client,
endpoint=endpoint,
cert=(MAAS_CERTIFICATE, MAAS_PRIVATE_KEY),
verify=False,
)
if not client.trusted:
if password:
yield deferToThread(client.authenticate, password)
else:
raise LXDError(
f"{system_id}: Certificate is not trusted and no password was given."
)
return client
except ClientConnectionFailed:
raise LXDError(
f"{system_id}: Failed to connect to the LXD REST API.")
@typed
@inlineCallbacks
def get_machine(self, system_id: str, context: dict):
"""Retrieve LXD VM."""
client = yield self.get_client(system_id, context)
instance_name = context.get("instance_name")
try:
machine = yield deferToThread(client.virtual_machines.get,
instance_name)
except NotFound:
raise LXDError(f"{system_id}: LXD VM {instance_name} not found.")
return machine
@typed
@inlineCallbacks
def power_on(self, system_id: str, context: dict):
"""Power on LXD VM."""
machine = yield deferToThread(self.get_machine, system_id, context)
if LXD_VM_POWER_STATE[machine.status_code] == "off":
yield deferToThread(machine.start)
@typed
@inlineCallbacks
def power_off(self, system_id: str, context: dict):
"""Power off LXD VM."""
machine = yield deferToThread(self.get_machine, system_id, context)
if LXD_VM_POWER_STATE[machine.status_code] == "on":
yield deferToThread(machine.stop)
@typed
@inlineCallbacks
def power_query(self, system_id: str, context: dict):
"""Power query LXD VM."""
machine = yield deferToThread(self.get_machine, system_id, context)
state = machine.status_code
try:
return LXD_VM_POWER_STATE[state]
except KeyError:
raise LXDError(f"{system_id}: Unknown power status code: {state}")
@inlineCallbacks
def discover(self, pod_id, context):
"""Discover all Pod host resources."""
client = yield self.get_client(pod_id, context)
if not client.has_api_extension("virtual-machines"):
raise LXDError(
"Please upgrade your LXD host to 3.19+ for virtual machine support."
)
resources = yield deferToThread(lambda: client.resources)
mac_addresses = []
for card in resources["network"]["cards"]:
for port in card["ports"]:
mac_addresses.append(port["address"])
# After the region creates the Pod object it will sync LXD commissioning
# data for all hardware information.
return DiscoveredPod(
architectures=[
kernel_to_debian_architecture(arch)
for arch in client.host_info["environment"]["architectures"]
],
name=client.host_info["environment"]["server_name"],
mac_addresses=mac_addresses,
capabilities=[
Capabilities.COMPOSABLE,
Capabilities.DYNAMIC_LOCAL_STORAGE,
Capabilities.OVER_COMMIT,
Capabilities.STORAGE_POOLS,
],
)
@inlineCallbacks
def compose(self, system_id, context, request):
"""Compose a virtual machine."""
# abstract method, will update in subsequent branch.
pass
@inlineCallbacks
def decompose(self, system_id, context):
"""Decompose a virtual machine machine."""
# abstract method, will update in subsequent branch.
pass
class HMCZPowerDriver(PowerDriver):
name = "hmcz"
chassis = True
can_probe = True
can_set_boot_order = True
description = "IBM Hardware Management Console (HMC) for Z"
settings = [
make_setting_field("power_address", "HMC Address", required=True),
make_setting_field("power_user", "HMC username", required=True),
make_setting_field("power_pass",
"HMC password",
field_type="password",
required=True),
make_setting_field(
"power_partition_name",
"HMC partition name",
scope=SETTING_SCOPE.NODE,
required=True,
),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
if no_zhmcclient:
return ["python3-zhmcclient"]
else:
return []
@typed
def _get_partition(self, context: dict):
session = Session(
context["power_address"],
context["power_user"],
context["power_pass"],
)
partition_name = context["power_partition_name"]
client = Client(session)
# Each HMC manages one or more CPCs(Central Processor Complex). To find
# a partition MAAS must iterate over all CPCs.
for cpc in client.cpcs.list():
if not cpc.dpm_enabled:
maaslog.warning(
f"DPM is not enabled on '{cpc.get_property('name')}', "
"skipping")
continue
with contextlib.suppress(NotFound):
return cpc.partitions.find(name=partition_name)
raise PowerActionError(f"Unable to find '{partition_name}' on HMC!")
# IBM Z partitions can take awhile to start/stop. Don't wait for completion
# so power actions don't consume a thread.
@typed
@asynchronous
@threadDeferred
def power_on(self, system_id: str, context: dict):
"""Power on IBM Z DPM."""
partition = self._get_partition(context)
status = partition.get_property("status")
if status in {"paused", "terminated"}:
# A "paused" or "terminated" partition can only be started if
# it is stopped first. MAAS can't execute the start action until
# the stop action completes. This holds the thread in MAAS for ~30s.
# IBM is aware this isn't optimal for us so they are looking into
# modifying IBM Z to go into a stopped state.
partition.stop(wait_for_completion=True)
elif status == "stopping":
# The HMC does not allow a machine to be powered on if its
# currently stopping. Wait 120s for it which should be more
# than enough time.
try:
partition.wait_for_status("stopped", 120)
except StatusTimeout:
# If 120s isn't enough time raise a PowerError() which will
# trigger the builtin retry code in the base PowerDriver()
# class.
raise PowerError("Partition is stuck in a "
f"{partition.get_property('status')} state!")
partition.start(wait_for_completion=False)
@typed
@asynchronous
@threadDeferred
def power_off(self, system_id: str, context: dict):
"""Power off IBM Z DPM."""
partition = self._get_partition(context)
status = partition.get_property("status")
if status == "starting":
# The HMC does not allow a machine to be powered off if its
# currently starting. Wait 120s for it which should be more
# than enough time.
try:
partition.wait_for_status("active", 120)
except StatusTimeout:
# If 120s isn't enough time raise a PowerError() which will
# trigger the builtin retry code in the base PowerDriver()
# class.
raise PowerError("Partition is stuck in a "
f"{partition.get_property('status')} state!")
partition.stop(wait_for_completion=False)
@typed
@asynchronous
@threadDeferred
def power_query(self, system_id: str, context: dict):
"""Power on IBM Z DPM."""
partition = self._get_partition(context)
status = partition.get_property("status")
# IBM Z takes time to start or stop a partition. It returns a
# transitional state during this time. Associate the transitional
# state with on or off so MAAS doesn't repeatedly issue a power
# on or off command.
if status in {"starting", "active", "degraded"}:
return "on"
elif status in {"stopping", "stopped", "paused", "terminated"}:
# A "paused" state isn't on or off, it just means the partition
# isn't currently executing instructions. A partition can go into
# a "paused" state if `shutdown -h now` is executed in the
# partition. "paused" also happens when transitioning between
# "starting" and "active". Consider it off so MAAS can start
# it again when needed. IBM is aware this is weird and is working
# on a solution.
return "off"
else:
return "unknown"
@typed
@asynchronous
@threadDeferred
def set_boot_order(self, system_id: str, context: dict, order: list):
"""Set the specified boot order.
:param system_id: `Node.system_id`
:param context: Power settings for the node.
:param order: An ordered list of network or storage devices.
"""
partition = self._get_partition(context)
status = partition.get_property("status")
if status in {"starting", "stopping"}:
# The HMC does not allow a machine's boot order to be reconfigured
# while in a transitional state. Wait for it to complete. If this
# times out allow it to be raised so the region can log it.
partition.wait_for_status(["stopped", "active"], 120)
# You can only specify one boot device on IBM Z
boot_device = order[0]
if boot_device.get("mac_address"):
nic = partition.nics.find(
**{"mac-address": boot_device["mac_address"]})
partition.update_properties({
"boot-device": "network-adapter",
"boot-network-device": nic.uri,
})
else:
for storage_group in partition.list_attached_storage_groups():
# MAAS/LXD detects the storage volume UUID as its serial.
try:
storage_volume = storage_group.storage_volumes.find(
uuid=boot_device["serial"].upper())
except NotFound:
pass
else:
break
partition.update_properties({
"boot-device":
"storage-volume",
"boot-storage-volume":
storage_volume.uri,
})
class IPMIPowerDriver(PowerDriver):
name = 'ipmi'
chassis = False
description = "IPMI"
settings = [
make_setting_field('power_driver',
"Power driver",
field_type='choice',
choices=IPMI_DRIVER_CHOICES,
default=IPMI_DRIVER.LAN_2_0,
required=True),
make_setting_field('power_boot_type',
"Power boot type",
field_type='choice',
choices=IPMI_BOOT_TYPE_CHOICES,
default=IPMI_BOOT_TYPE.DEFAULT,
required=False),
make_setting_field('power_address', "IP address", required=True),
make_setting_field('power_user', "Power user"),
make_setting_field('power_pass',
"Power password",
field_type='password'),
make_setting_field('mac_address',
"Power MAC",
scope=SETTING_SCOPE.NODE)
]
ip_extractor = make_ip_extractor('power_address')
wait_time = (4, 8, 16, 32)
def detect_missing_packages(self):
if not shell.has_command_available('ipmipower'):
return ['freeipmi-tools']
return []
@staticmethod
def _issue_ipmi_chassis_config_command(command,
power_change,
power_address,
power_boot_type=None):
env = shell.get_env_with_locale()
with NamedTemporaryFile("w+", encoding="utf-8") as tmp_config:
# Write out the chassis configuration.
if (power_boot_type is None
or power_boot_type == IPMI_BOOT_TYPE.DEFAULT):
tmp_config.write(IPMI_CONFIG)
else:
tmp_config.write(IPMI_CONFIG_WITH_BOOT_TYPE %
IPMI_BOOT_TYPE_MAPPING[power_boot_type])
tmp_config.flush()
# Use it when running the chassis config command.
# XXX: Not using call_and_check here because we
# need to check stderr.
command = tuple(command) + ("--filename", tmp_config.name)
process = Popen(command, stdout=PIPE, stderr=PIPE, env=env)
_, stderr = process.communicate()
stderr = stderr.decode("utf-8").strip()
# XXX newell 2016-11-21 bug=1516065: Some IPMI hardware have timeout
# issues when trying to set the boot order to PXE. We want to
# continue and not raise an error here.
ipmi_errors = {
key: IPMI_ERRORS[key]
for key in IPMI_ERRORS
if IPMI_ERRORS[key]['exception'] == PowerAuthError
}
for error, error_info in ipmi_errors.items():
if error in stderr:
raise error_info.get('exception')(error_info.get('message'))
if process.returncode != 0:
maaslog.warning("Failed to change the boot order to PXE %s: %s" %
(power_address, stderr))
@staticmethod
def _issue_ipmipower_command(command, power_change, power_address):
env = shell.get_env_with_locale()
command = tuple(command) # For consistency when testing.
process = Popen(command, stdout=PIPE, stderr=PIPE, env=env)
stdout, _ = process.communicate()
stdout = stdout.decode("utf-8").strip()
for error, error_info in IPMI_ERRORS.items():
# ipmipower dumps errors to stdout
if error in stdout:
raise error_info.get('exception')(error_info.get('message'))
if process.returncode != 0:
raise PowerError("Failed to power %s %s: %s" %
(power_change, power_address, stdout))
match = re.search(":\s*(on|off)", stdout)
return stdout if match is None else match.group(1)
def _issue_ipmi_command(self,
power_change,
power_address=None,
power_user=None,
power_pass=None,
power_driver=None,
power_off_mode=None,
mac_address=None,
power_boot_type=None,
**extra):
"""Issue command to ipmipower, for the given system."""
# This script deliberately does not check the current power state
# before issuing the requested power command. See bug 1171418 for an
# explanation.
if (is_power_parameter_set(mac_address)
and not is_power_parameter_set(power_address)):
power_address = find_ip_via_arp(mac_address)
# The `-W opensesspriv` workaround is required on many BMCs, and
# should have no impact on BMCs that don't require it.
# See https://bugs.launchpad.net/maas/+bug/1287964
ipmi_chassis_config_command = [
'ipmi-chassis-config', '-W', 'opensesspriv'
]
ipmipower_command = ['ipmipower', '-W', 'opensesspriv']
# Arguments in common between chassis config and power control. See
# https://launchpad.net/bugs/1053391 for details of modifying the
# command for power_driver and power_user.
common_args = []
if is_power_parameter_set(power_driver):
common_args.extend(("--driver-type", power_driver))
common_args.extend(('-h', power_address))
if is_power_parameter_set(power_user):
common_args.extend(("-u", power_user))
common_args.extend(('-p', power_pass))
# Update the power commands with common args.
ipmipower_command.extend(common_args)
# Additional arguments for the power command.
if power_change == 'on':
# Update the chassis config commands and call it just when
# powering on the machine.
ipmi_chassis_config_command.extend(common_args)
ipmi_chassis_config_command.append('--commit')
self._issue_ipmi_chassis_config_command(
ipmi_chassis_config_command, power_change, power_address,
power_boot_type)
ipmipower_command.append('--cycle')
ipmipower_command.append('--on-if-off')
elif power_change == 'off':
if power_off_mode == 'soft':
ipmipower_command.append('--soft')
else:
ipmipower_command.append('--off')
elif power_change == 'query':
ipmipower_command.append('--stat')
# Update or query the power state.
return self._issue_ipmipower_command(ipmipower_command, power_change,
power_address)
def power_on(self, system_id, context):
self._issue_ipmi_command('on', **context)
def power_off(self, system_id, context):
self._issue_ipmi_command('off', **context)
def power_query(self, system_id, context):
return self._issue_ipmi_command('query', **context)
def test_returns_json_verifiable_dict(self):
json_field = make_setting_field("some_field", "Some Label")
jsonschema.validate(json_field, SETTING_PARAMETER_FIELD_SCHEMA)
def make_field(self):
return make_setting_field(self.getUniqueString(),
self.getUniqueString())
class MoonshotIPMIPowerDriver(PowerDriver):
name = "moonshot"
chassis = True
can_probe = False
can_set_boot_order = False
description = "HP Moonshot - iLO4 (IPMI)"
settings = [
make_setting_field("power_address", "Power address", required=True),
make_setting_field("power_user", "Power user"),
make_setting_field("power_pass",
"Power password",
field_type="password"),
make_setting_field(
"power_hwaddress",
"Power hardware address",
scope=SETTING_SCOPE.NODE,
required=True,
),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
if not shell.has_command_available("ipmitool"):
return ["ipmitool"]
return []
def _issue_ipmitool_command(self,
power_change,
power_address=None,
power_user=None,
power_pass=None,
power_hwaddress=None,
**extra):
"""Issue ipmitool command for HP Moonshot cartridge."""
command = (
"ipmitool",
"-I",
"lanplus",
"-H",
power_address,
"-U",
power_user,
"-P",
power_pass,
"-L",
"OPERATOR",
) + tuple(power_hwaddress.split())
if power_change == "pxe":
command += ("chassis", "bootdev", "pxe")
else:
command += ("power", power_change)
try:
stdout = call_and_check(command, env=get_env_with_locale())
stdout = stdout.decode("utf-8")
except ExternalProcessError as e:
raise PowerActionError(
"Failed to execute %s for cartridge %s at %s: %s" % (
command,
power_hwaddress,
power_address,
e.output_as_unicode,
))
else:
# Return output if power query
if power_change == "status":
match = re.search(r"\b(on|off)\b$", stdout)
return stdout if match is None else match.group(0)
def power_on(self, system_id, context):
self._issue_ipmitool_command("pxe", **context)
self._issue_ipmitool_command("on", **context)
def power_off(self, system_id, context):
self._issue_ipmitool_command("off", **context)
def power_query(self, system_id, context):
return self._issue_ipmitool_command("status", **context)
class OpenBMCPowerDriver(PowerDriver):
chassis = False
name = "openbmc"
description = "OpenBMC Power Driver"
settings = [
make_setting_field("power_address", "OpenBMC address", required=True),
make_setting_field("power_user", "OpenBMC user", required=True),
make_setting_field(
"power_pass",
"OpenBMC password",
field_type="password",
required=True,
),
]
ip_extractor = make_ip_extractor("power_address")
cookie_jar = compat.cookielib.CookieJar()
agent = CookieAgent(
Agent(reactor, contextFactory=WebClientContextFactory()), cookie_jar
)
def detect_missing_packages(self):
# no required packages
return []
@asynchronous
def openbmc_request(self, method, uri, data=None):
"""Send the RESTful request and return the response."""
d = self.agent.request(
method,
uri,
Headers({b"Content-Type": [b"application/json"]}),
data,
)
def cb_request(response):
"""Render the response received."""
def decode_data(data):
data = data.decode("utf-8")
return json.loads(data)
# Error out if the response has a status code of 400 or above.
if response.code >= int(HTTPStatus.BAD_REQUEST):
raise PowerActionError(
"OpenBMC request failed with response status code:"
" %s." % response.code
)
f = readBody(response)
f.addCallback(decode_data)
return f
d.addCallback(cb_request)
return d
def get_uri(self, context, path=None):
"""Return url for the host."""
uri = context.get("power_address")
if path is not None:
uri = uri + path
if "https" not in uri and "http" not in uri:
uri = join("https://", uri)
return uri.encode("utf-8")
@inlineCallbacks
def command(self, context, method, uri, data=None):
"""Current deployments of OpenBMC in the field do not
support header based authentication. To issue RESTful commands,
we need to login, issue RESTful command and logout.
"""
# login to BMC
login_uri = self.get_uri(context, "/login")
login_creds = {
"data": [context.get("power_user"), context.get("power_pass")]
}
login_data = FileBodyProducer(
BytesIO(json.dumps(login_creds).encode("utf-8"))
)
login = yield self.openbmc_request(b"POST", login_uri, login_data)
login_status = login.get("status")
if login_status.lower() != "ok":
raise PowerFatalError(
"OpenBMC power driver received unexpected response"
" to login command"
)
# issue command
cmd_out = yield self.openbmc_request(method, uri, data)
# logout of BMC
logout_uri = self.get_uri(context, "/logout")
logout_creds = {"data": []}
logout_data = FileBodyProducer(
BytesIO(json.dumps(logout_creds).encode("utf-8"))
)
logout = yield self.openbmc_request(b"POST", logout_uri, logout_data)
logout_status = logout.get("status")
if logout_status.lower() != "ok":
raise PowerFatalError(
"OpenBMC power driver received unexpected response"
" to logout command"
)
return cmd_out
@inlineCallbacks
def set_pxe_boot(self, context):
"""Set the host to PXE boot."""
# set boot mode to one-time boot.
uri = self.get_uri(context, HOST_CONTROL + "one_time/attr/BootMode")
data = FileBodyProducer(BytesIO(json.dumps(REG_MODE).encode("utf-8")))
yield self.command(context, b"PUT", uri, data)
# set one-time boot source to network.
uri = self.get_uri(context, HOST_CONTROL + "one_time/attr/BootSource")
data = FileBodyProducer(BytesIO(json.dumps(SRC_NET).encode("utf-8")))
yield self.command(context, b"PUT", uri, data)
@asynchronous
@inlineCallbacks
def power_query(self, system_id, context):
"""Power query host."""
uri = self.get_uri(context, HOST_STATE + "CurrentHostState")
power_state = yield self.command(context, b"GET", uri, None)
status = power_state.get("data").split(".")[-1].lower()
if all(status not in state for state in ("running", "off")):
raise PowerFatalError(
"OpenBMC power driver received unexpected response"
"to power query command"
)
return {"running": "on", "off": "off"}.get(status)
@asynchronous
@inlineCallbacks
def power_on(self, system_id, context):
"""Power on host."""
cur_state = yield self.power_query(system_id, context)
uri = self.get_uri(context, HOST_STATE + "RequestedHostTransition")
# power off host if it is currently on.
if cur_state == "on":
data = FileBodyProducer(
BytesIO(json.dumps(HOST_OFF).encode("utf-8"))
)
off_state = yield self.command(context, b"PUT", uri, data)
status = off_state.get("status")
if status.lower() != "ok":
raise PowerFatalError(
"OpenBMC power driver received unexpected response"
" to power off command"
)
# set one-time boot to PXE boot.
yield self.set_pxe_boot(context)
# power on host.
data = FileBodyProducer(BytesIO(json.dumps(HOST_ON).encode("utf-8")))
on_state = yield self.command(context, b"PUT", uri, data)
status = on_state.get("status")
if status.lower() != "ok":
raise PowerFatalError(
"OpenBMC power driver received unexpected response"
" to power on command"
)
@asynchronous
@inlineCallbacks
def power_off(self, system_id, context):
"""Power off host."""
uri = self.get_uri(context, HOST_STATE + "RequestedHostTransition")
data = FileBodyProducer(BytesIO(json.dumps(HOST_OFF).encode("utf-8")))
# set next one-time boot to PXE boot.
yield self.set_pxe_boot(context)
# power off host.
power_state = yield self.command(context, b"PUT", uri, data)
status = power_state.get("status")
if status.lower() != "ok":
raise PowerFatalError(
"OpenBMC power driver received unexpected response"
" to power off command"
)
class LXDPodDriver(PodDriver):
name = "lxd"
chassis = True
description = "LXD (virtual systems)"
settings = [
make_setting_field("power_address", "LXD address", required=True),
make_setting_field(
"instance_name",
"Instance name",
scope=SETTING_SCOPE.NODE,
required=True,
),
make_setting_field(
"password",
"LXD password (optional)",
required=False,
field_type="password",
),
]
ip_extractor = make_ip_extractor("power_address",
IP_EXTRACTOR_PATTERNS.URL)
def detect_missing_packages(self):
# python3-pylxd is a required package
# for maas and is installed by default.
return []
@typed
def get_url(self, context: dict):
"""Return url for the LXD host."""
power_address = context.get("power_address")
url = urlparse(power_address)
if not url.scheme:
# When the scheme is not included in the power address
# urlparse puts the url into path.
url = url._replace(scheme="https", netloc="%s" % url.path, path="")
if not url.port:
if url.netloc:
url = url._replace(netloc="%s:8443" % url.netloc)
else:
# Similar to above, we need to swap netloc and path.
url = url._replace(netloc="%s:8443" % url.path, path="")
return url.geturl()
@typed
@inlineCallbacks
def get_client(self, pod_id: str, context: dict):
"""Connect pylxd client."""
endpoint = self.get_url(context)
password = context.get("password")
try:
client = yield deferToThread(
Client,
endpoint=endpoint,
cert=(MAAS_CERTIFICATE, MAAS_PRIVATE_KEY),
verify=False,
)
if not client.trusted:
if password:
yield deferToThread(client.authenticate, password)
else:
raise LXDPodError(
f"Pod {pod_id}: Certificate is not trusted and no password was given."
)
except ClientConnectionFailed:
raise LXDPodError(
f"Pod {pod_id}: Failed to connect to the LXD REST API.")
return client
@typed
@inlineCallbacks
def get_machine(self, pod_id: str, context: dict):
"""Retrieve LXD VM."""
client = yield self.get_client(pod_id, context)
instance_name = context.get("instance_name")
try:
machine = yield deferToThread(client.virtual_machines.get,
instance_name)
except NotFound:
raise LXDPodError(
f"Pod {pod_id}: LXD VM {instance_name} not found.")
return machine
@inlineCallbacks
def get_discovered_machine(self,
client,
machine,
storage_pools,
request=None):
"""Get the discovered machine."""
# Check the power state first.
state = machine.status_code
try:
power_state = LXD_VM_POWER_STATE[state]
except KeyError:
maaslog.error(
f"{machine.name}: Unknown power status code: {state}")
power_state = "unknown"
expanded_config = machine.expanded_config
expanded_devices = machine.expanded_devices
# Discover block devices.
block_devices = []
for idx, device in enumerate(expanded_devices):
# Block device.
# When request is provided map the tags from the request block
# devices to the discovered block devices. This ensures that
# composed machine has the requested tags on the block device.
tags = []
if (request is not None
and expanded_devices[device]["type"] == "disk"):
tags = request.block_devices[0].tags
device_info = expanded_devices[device]
if device_info["type"] == "disk":
# When LXD creates a QEMU disk the serial is always
# lxd_{device name}. The device_name is defined by
# the LXD profile or when adding a device. This is
# commonly "root" for the first disk. The model and
# serial must be correctly defined here otherwise
# MAAS will delete the disk created during composition
# which results in losing the storage pool link. Without
# the storage pool link MAAS can't determine how much
# of the storage pool has been used.
serial = f"lxd_{device}"
# Default disk size is 10GB.
size = convert_lxd_byte_suffixes(
device_info.get("size", "10GB"))
storage_pool = device_info.get("pool")
block_devices.append(
DiscoveredMachineBlockDevice(
model="QEMU HARDDISK",
serial=serial,
id_path=
f"/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_{serial}",
size=size,
tags=tags,
storage_pool=storage_pool,
))
# Discover interfaces.
interfaces = []
boot = True
for configuration in expanded_config:
if configuration.endswith("hwaddr"):
mac = expanded_config[configuration]
name = configuration.split(".")[1]
nictype = expanded_devices[name].get("nictype")
if nictype is None and "network" in expanded_devices[name]:
# Try finding the nictype from the networks.
network = yield client.networks.get(
expanded_devices[name]["network"])
nictype = network.type
interfaces.append(
DiscoveredMachineInterface(
mac_address=mac,
vid=get_vid_from_ifname(name),
boot=boot,
attach_type=nictype,
attach_name=name,
))
boot = False
# LXD uses different suffixes to store memory so make
# sure we convert to MiB, which is what MAAS uses.
memory = expanded_config.get("limits.memory")
if memory is not None:
memory = convert_lxd_byte_suffixes(memory, divisor=1024**2)
else:
memory = 1024
return DiscoveredMachine(
hostname=machine.name,
architecture=kernel_to_debian_architecture(machine.architecture),
# 1 core and 1GiB of memory (we need it in MiB) is default for
# LXD if not specified.
cores=int(expanded_config.get("limits.cpu", 1)),
memory=memory,
cpu_speed=0,
interfaces=interfaces,
block_devices=block_devices,
power_state=power_state,
power_parameters={"instance_name": machine.name},
tags=[],
)
def get_discovered_pod_storage_pool(self, storage_pool):
"""Get the Pod storage pool."""
storage_pool_config = storage_pool.config
# Sometimes the config is empty, use get() method on the dictionary in case.
storage_pool_path = storage_pool_config.get("source")
storage_pool_resources = storage_pool.resources.get()
total_storage = storage_pool_resources.space["total"]
return DiscoveredPodStoragePool(
# No ID's with LXD so we are just using the name as the ID.
id=storage_pool.name,
name=storage_pool.name,
path=storage_pool_path,
type=storage_pool.driver,
storage=total_storage,
)
@typed
@asynchronous
@inlineCallbacks
def power_on(self, pod_id: str, context: dict):
"""Power on LXD VM."""
machine = yield self.get_machine(pod_id, context)
if LXD_VM_POWER_STATE[machine.status_code] == "off":
yield deferToThread(machine.start)
@typed
@asynchronous
@inlineCallbacks
def power_off(self, pod_id: str, context: dict):
"""Power off LXD VM."""
machine = yield self.get_machine(pod_id, context)
if LXD_VM_POWER_STATE[machine.status_code] == "on":
yield deferToThread(machine.stop)
@typed
@asynchronous
@inlineCallbacks
def power_query(self, pod_id: str, context: dict):
"""Power query LXD VM."""
machine = yield self.get_machine(pod_id, context)
state = machine.status_code
try:
return LXD_VM_POWER_STATE[state]
except KeyError:
raise LXDPodError(
f"Pod {pod_id}: Unknown power status code: {state}")
@inlineCallbacks
def discover(self, pod_id, context):
"""Discover all Pod host resources."""
# Connect to the Pod and make sure it is valid.
client = yield self.get_client(pod_id, context)
if not client.has_api_extension("virtual-machines"):
raise LXDPodError(
"Please upgrade your LXD host to 3.19+ for virtual machine support."
)
resources = yield deferToThread(lambda: client.resources)
mac_addresses = []
for card in resources["network"]["cards"]:
for port in card["ports"]:
mac_addresses.append(port["address"])
# After the region creates the Pod object it will sync LXD commissioning
# data for all hardware information.
discovered_pod = DiscoveredPod(
# client.host_info["environment"]["architectures"] reports all the
# architectures the host CPU supports, not the architectures LXD
# supports. On x86_64 LXD reports [x86_64, i686] however LXD does
# not currently support VMs on i686. The LXD API currently does not
# have a way to query which architectures are usable for VMs. The
# safest bet is to just use the kernel_architecture.
architectures=[
kernel_to_debian_architecture(
client.host_info["environment"]["kernel_architecture"])
],
name=client.host_info["environment"]["server_name"],
mac_addresses=mac_addresses,
capabilities=[
Capabilities.COMPOSABLE,
Capabilities.DYNAMIC_LOCAL_STORAGE,
Capabilities.OVER_COMMIT,
Capabilities.STORAGE_POOLS,
],
)
# Check that we have at least one storage pool.
# If not, user should be warned that they need to create one.
storage_pools = yield deferToThread(client.storage_pools.all)
if not storage_pools:
raise LXDPodError(
"No storage pools exists. Please create a storage pool in LXD."
)
# Discover Storage Pools.
pools = []
storage_pools = yield deferToThread(client.storage_pools.all)
local_storage = 0
for storage_pool in storage_pools:
discovered_storage_pool = self.get_discovered_pod_storage_pool(
storage_pool)
local_storage += discovered_storage_pool.storage
pools.append(discovered_storage_pool)
discovered_pod.storage_pools = pools
discovered_pod.local_storage = local_storage
# Discover VMs.
machines = []
virtual_machines = yield deferToThread(client.virtual_machines.all)
for virtual_machine in virtual_machines:
discovered_machine = yield self.get_discovered_machine(
client,
virtual_machine,
storage_pools=discovered_pod.storage_pools,
)
discovered_machine.cpu_speed = lxd_cpu_speed(resources)
machines.append(discovered_machine)
discovered_pod.machines = machines
# Return the DiscoveredPod.
return discovered_pod
@asynchronous
def get_commissioning_data(self, pod_id, context):
"""Retreive commissioning data from LXD."""
d = self.get_client(pod_id, context)
# Replicate the LXD API in tree form, like machine-resources does.
d.addCallback(
lambda client: {
# /1.0
**client.host_info,
# /1.0/resources
"resources":
client.resources,
# TODO - Add networking information.
# /1.0/networks
# 'networks': {'eth0': {...}, 'eth1': {...}, 'bond0': {...}},
})
d.addCallback(lambda resources: {LXD_OUTPUT_NAME: resources})
return d
def get_usable_storage_pool(self,
disk,
storage_pools,
default_storage_pool=None):
"""Return the storage pool and type that has enough space for `disk.size`."""
# Filter off of tags.
filtered_storage_pools = [
storage_pool for storage_pool in storage_pools
if storage_pool.name in disk.tags
]
if filtered_storage_pools:
for storage_pool in filtered_storage_pools:
resources = storage_pool.resources.get()
available = resources.space["total"] - resources.space["used"]
if disk.size <= available:
return storage_pool.name
raise PodInvalidResources(
"Not enough storage space on storage pools: %s" % (", ".join([
storage_pool.name
for storage_pool in filtered_storage_pools
])))
# Filter off of default storage pool name.
if default_storage_pool:
filtered_storage_pools = [
storage_pool for storage_pool in storage_pools
if storage_pool.name == default_storage_pool
]
if filtered_storage_pools:
default_storage_pool = filtered_storage_pools[0]
resources = default_storage_pool.resources.get()
available = resources.space["total"] - resources.space["used"]
if disk.size <= available:
return default_storage_pool.name
raise PodInvalidResources(
f"Not enough space in default storage pool: {default_storage_pool.name}"
)
raise LXDPodError(
f"Default storage pool '{default_storage_pool}' doesn't exist."
)
# No filtering, just find a storage pool with enough space.
for storage_pool in storage_pools:
resources = storage_pool.resources.get()
available = resources.space["total"] - resources.space["used"]
if disk.size <= available:
return storage_pool.name
raise PodInvalidResources(
"Not enough storage space on any storage pools: %s" %
(", ".join([storage_pool.name for storage_pool in storage_pools])))
@inlineCallbacks
def compose(self, pod_id: str, context: dict, request: RequestedMachine):
"""Compose a virtual machine."""
client = yield self.get_client(pod_id, context)
# Check to see if there is a maas profile. If not, use the default.
try:
profile = yield deferToThread(client.profiles.get, "maas")
except NotFound:
# Fall back to default
try:
profile = yield deferToThread(client.profiles.get, "default")
except NotFound:
raise LXDPodError(
f"Pod {pod_id}: MAAS needs LXD to have either a 'maas' "
"profile or a 'default' profile, defined.")
resources = yield deferToThread(lambda: client.resources)
definition = {
"name": request.hostname,
"architecture":
debian_to_kernel_architecture(request.architecture),
"config": {
"limits.cpu": str(request.cores),
"limits.memory": str(request.memory * 1024**2),
# LP: 1867387 - Disable secure boot until its fixed in MAAS
"security.secureboot": "false",
},
"profiles": [profile.name],
# Image source is empty as we get images
# from MAAS when netbooting.
"source": {
"type": "none"
},
}
# Add disk to the definition.
# XXX: LXD VMs currently only support one virtual block device.
# Loop will need to be modified once LXD has multiple virtual
# block device support.
devices = {}
storage_pools = yield deferToThread(client.storage_pools.all)
default_storage_pool = context.get("default_storage_pool_id",
context.get("default_storage_pool"))
for idx, disk in enumerate(request.block_devices):
usable_pool = self.get_usable_storage_pool(disk, storage_pools,
default_storage_pool)
devices["root"] = {
"path": "/",
"type": "disk",
"pool": usable_pool,
"size": str(disk.size),
"boot.priority": "0",
}
# Create and attach interfaces to the machine.
# The reason we are doing this after the machine is created
# is because pylxd doesn't have a way to override the devices
# that are defined in the profile. Since the profile is provided
# by the user, we have no idea how many interfaces are defined.
#
# Currently, only the bridged type is supported with virtual machines.
# https://lxd.readthedocs.io/en/latest/instances/#device-types
nic_devices = {}
profile_devices = profile.devices
device_names = []
boot = True
for interface in request.interfaces:
if interface.ifname is None:
# No interface constraints sent so use the best
# nic device from the profile's devices.
device_name, device = self.get_best_nic_device_from_profile(
profile_devices)
nic_devices[device_name] = device
if "boot.priority" not in device and boot:
nic_devices[device_name]["boot.priority"] = "1"
boot = False
device_names.append(device_name)
else:
# Interface constraints sent so build the nic devices.
# LXD uses 'bridged' while MAAS uses 'bridge' so convert
# the nictype.
nictype = ("".join([interface.attach_type, "d"])
if interface.attach_type == "bridge" else
interface.attach_type)
nic_devices[interface.ifname] = {
"name": interface.ifname,
"parent": interface.attach_name,
"nictype": nictype,
"type": "nic",
}
# Set to boot from the first nic
if boot:
nic_devices[interface.ifname]["boot.priority"] = "1"
boot = False
device_names.append(interface.ifname)
# Iterate over all of the profile's devices with type=nic
# and set to type=none if not nic_device. This overrides
# the device settings on the profile used by the machine.
for dk, dv in profile_devices.items():
if dk not in device_names and dv["type"] == "nic":
nic_devices[dk] = {"type": "none"}
# Merge the devices and attach the devices to the defintion.
for k, v in nic_devices.items():
devices[k] = v
definition["devices"] = devices
# Create the machine.
machine = yield deferToThread(client.virtual_machines.create,
definition,
wait=True)
# Pod hints are updated on the region after the machine
# is composed.
discovered_machine = yield self.get_discovered_machine(client,
machine,
storage_pools,
request=request)
# Update the machine cpu speed.
discovered_machine.cpu_speed = lxd_cpu_speed(resources)
return discovered_machine, DiscoveredPodHints()
def get_best_nic_device_from_profile(self, devices):
"""Return the nic name and device that is most likely to be
on a MAAS DHCP enabled subnet. This is used when no interface
constraints are in the request."""
nic_devices = {k: v for k, v in devices.items() if v["type"] == "nic"}
# Check for boot.priority flag by sorting.
# If the boot.priority flag is set, this will
# most likely be an interface that is expected
# to boot off the network.
boot_priorities = sorted(
{k: v
for k, v in nic_devices.items() if "boot.priority" in v},
key=lambda i: nic_devices[i]["boot.priority"],
reverse=True,
)
if boot_priorities:
return boot_priorities[0], nic_devices[boot_priorities[0]]
# Since we couldn't find a nic device with boot.priority set
# just choose the first nic device.
device_name = list(nic_devices.keys())[0]
return device_name, nic_devices[device_name]
@inlineCallbacks
def decompose(self, pod_id, context):
"""Decompose a virtual machine."""
client = yield self.get_client(pod_id, context)
machine = yield deferToThread(client.virtual_machines.get,
context["instance_name"])
# Stop the machine.
yield deferToThread(machine.stop)
yield deferToThread(machine.delete, wait=True)
# Hints are updated on the region for LXDPodDriver.
return DiscoveredPodHints()
class HMCPowerDriver(PowerDriver):
name = "hmc"
chassis = True
description = "IBM Hardware Management Console (HMC)"
settings = [
make_setting_field("power_address", "IP for HMC", required=True),
make_setting_field("power_user", "HMC username"),
make_setting_field("power_pass", "HMC password",
field_type="password"),
make_setting_field(
"server_name",
"HMC Managed System server name",
scope=SETTING_SCOPE.NODE,
required=True,
),
make_setting_field(
"lpar",
"HMC logical partition",
scope=SETTING_SCOPE.NODE,
required=True,
),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
# uses pure-python paramiko ssh client - nothing to look for!
return []
def run_hmc_command(self,
command,
power_address=None,
power_user=None,
power_pass=None,
**extra):
"""Run a single command on HMC via SSH and return output."""
try:
ssh_client = SSHClient()
ssh_client.set_missing_host_key_policy(AutoAddPolicy())
ssh_client.connect(power_address,
username=power_user,
password=power_pass)
_, stdout, _ = ssh_client.exec_command(command)
output = stdout.read().decode("utf-8").strip()
except (SSHException, EOFError, SOCKETError) as e:
raise PowerConnError("Could not make SSH connection to HMC for "
"%s on %s - %s" %
(power_user, power_address, e))
finally:
ssh_client.close()
return output
def power_on(self, system_id, context):
"""Power on HMC lpar."""
if self.power_query(system_id, context) in HMCState.ON:
self.power_off(system_id, context)
try:
# Power lpar on
self.run_hmc_command(
"chsysstate -r lpar -m %s -o on -n %s --bootstring network-all"
% (context["server_name"], context["lpar"]), **context)
except PowerConnError as e:
raise PowerActionError(
"HMC Power Driver unable to power on lpar %s: %s" %
(context["lpar"], e))
def power_off(self, system_id, context):
"""Power off HMC lpar."""
try:
# Power lpar off
self.run_hmc_command(
"chsysstate -r lpar -m %s -o shutdown -n %s --immed" %
(context["server_name"], context["lpar"]), **context)
except PowerConnError as e:
raise PowerActionError(
"HMC Power Driver unable to power off lpar %s: %s" %
(context["lpar"], e))
def power_query(self, system_id, context):
"""Power query HMC lpar."""
try:
# Power query lpar
power_state = self.run_hmc_command(
"lssyscfg -m %s -r lpar -F state --filter lpar_names=%s" %
(context["server_name"], context["lpar"]), **context)
except PowerConnError as e:
raise PowerActionError(
"HMC Power Driver unable to power query lpar %s: %s" %
(context["lpar"], e))
else:
if power_state in HMCState.OFF:
return "off"
elif power_state in HMCState.ON:
return "on"
else:
raise PowerFatalError(
"HMC Power Driver retrieved unknown power state %s"
" for lpar %s" % (power_state, context["lpar"]))
def test_returns_valid_schema(self):
setting = make_setting_field(
factory.make_name('name'), factory.make_name('label'))
#: doesn't raise ValidationError
validate(setting, SETTING_PARAMETER_FIELD_SCHEMA)
class EatonPowerDriver(PowerDriver):
name = "eaton"
chassis = True
can_probe = False
description = "Eaton PDU"
settings = [
make_setting_field("power_address", "IP for Eaton PDU", required=True),
make_setting_field(
"node_outlet",
"Eaton PDU node outlet number (1-24)",
scope=SETTING_SCOPE.NODE,
required=True,
),
make_setting_field("power_on_delay",
"Power ON outlet delay (seconds)",
default="5"),
]
ip_extractor = make_ip_extractor("power_address")
queryable = True
def detect_missing_packages(self):
if not shell.has_command_available("snmpget"):
return ["snmp"]
return []
def run_process(self, *command):
"""Run SNMP command in subprocess."""
result = shell.run_command(*command)
if result.returncode != 0:
raise PowerActionError(
"Eaton Power Driver external process error for command %s: %s"
% ("".join(command), result.stderr))
match = re.search(r"INTEGER:\s*([0-1])", result.stdout)
if match is None:
raise PowerActionError(
"Eaton Power Driver unable to extract outlet power state"
" from: %s" % result.stdout)
else:
return match.group(1)
def power_on(self, system_id, context):
"""Power on Eaton outlet."""
if self.power_query(system_id, context) == "on":
self.power_off(system_id, context)
sleep(float(context["power_on_delay"]))
self.run_process(
"snmpset",
*_get_common_args(
context["power_address"],
EatonFunction.ON,
context["node_outlet"],
),
"i",
"0",
)
def power_off(self, system_id, context):
"""Power off Eaton outlet."""
self.run_process(
"snmpset",
*_get_common_args(
context["power_address"],
EatonFunction.OFF,
context["node_outlet"],
),
"i",
"0",
)
def power_query(self, system_id, context):
"""Power query for Eaton outlet."""
power_state = self.run_process(
"snmpget",
*_get_common_args(
context["power_address"],
EatonFunction.QUERY,
context["node_outlet"],
),
)
if power_state == EatonState.OFF:
return "off"
elif power_state == EatonState.ON:
return "on"
else:
raise PowerActionError(
"Eaton Power Driver retrieved unknown power state: %r" %
power_state)
def test_defaults_field_type_to_string(self):
setting = make_setting_field(
factory.make_name('name'), factory.make_name('label'))
self.assertEqual('string', setting['field_type'])
class NovaPowerDriver(PowerDriver):
name = 'nova'
chassis = True
description = "OpenStack Nova"
settings = [
make_setting_field('nova_id',
"Host UUID",
required=True,
scope=SETTING_SCOPE.NODE),
make_setting_field('os_tenantname', "Tenant name", required=True),
make_setting_field('os_username', "Username", required=True),
make_setting_field('os_password',
"Password",
field_type='password',
required=True),
make_setting_field('os_authurl', "Auth URL", required=True),
]
ip_extractor = make_ip_extractor('os_authurl', IP_EXTRACTOR_PATTERNS.URL)
nova_api = None
def power_control_nova(self,
power_change,
nova_id=None,
os_tenantname=None,
os_username=None,
os_password=None,
os_authurl=None,
**extra):
"""Control power of nova instances."""
if not self.try_novaapi_import():
raise PowerToolError("Missing the python3-novaclient package.")
nova = self.nova_api.Client(2, os_username, os_password, os_tenantname,
os_authurl)
try:
urllib.request.urlopen(os_authurl)
except urllib.error.URLError:
raise PowerError('%s: URL error' % os_authurl)
try:
nova.authenticate()
except self.nova_api.exceptions.Unauthorized:
raise PowerAuthError('Failed to authenticate with OpenStack')
try:
pwr_stateStr = "OS-EXT-STS:power_state"
tsk_stateStr = "OS-EXT-STS:task_state"
vm_stateStr = "OS-EXT-STS:vm_state"
power_state = getattr(nova.servers.get(nova_id), pwr_stateStr)
task_state = getattr(nova.servers.get(nova_id), tsk_stateStr)
vm_state = getattr(nova.servers.get(nova_id), vm_stateStr)
except self.nova_api.exceptions.NotFound:
raise PowerError('%s: Instance id not found' % nova_id)
if power_state == NovaPowerState.NOSTATE:
raise PowerFatalError('%s: Failed to get power state' % nova_id)
if power_state == NovaPowerState.RUNNING:
if (power_change == 'off' and task_state != 'powering-off'
and vm_state != 'stopped'):
nova.servers.get(nova_id).stop()
elif power_change == 'query':
return 'on'
if power_state == NovaPowerState.SHUTDOWN:
if (power_change == 'on' and task_state != 'powering-on'
and vm_state != 'active'):
nova.servers.get(nova_id).start()
elif power_change == 'query':
return 'off'
def try_novaapi_import(self):
"""Attempt to import the novaclient API. This API is provided by the
python3-novaclient package; if it doesn't work out, we need to notify
the user so they can install it.
"""
invalidate_caches()
try:
if self.nova_api is None:
self.nova_api = import_module('novaclient.client')
except ImportError:
return False
else:
return True
def detect_missing_packages(self):
"""Detect missing package python3-novaclient."""
if not self.try_novaapi_import():
return ["python3-novaclient"]
return []
def power_on(self, system_id, context):
"""Power on nova instance."""
self.power_control_nova('on', **context)
def power_off(self, system_id, context):
"""Power off nova instance."""
self.power_control_nova('off', **context)
def power_query(self, system_id, context):
"""Power query nova instance."""
return self.power_control_nova('query', **context)
def test_defaults_choices_to_empty_list(self):
setting = make_setting_field(
factory.make_name('name'), factory.make_name('label'))
self.assertEqual([], setting['choices'])
class VMwarePowerDriver(PowerDriver):
name = "vmware"
chassis = True
can_probe = True
description = "VMware"
settings = [
make_setting_field(
"power_vm_name",
"VM Name (if UUID unknown)",
required=False,
scope=SETTING_SCOPE.NODE,
),
make_setting_field(
"power_uuid",
"VM UUID (if known)",
required=False,
scope=SETTING_SCOPE.NODE,
),
make_setting_field("power_address", "VMware IP", required=True),
make_setting_field("power_user", "VMware username", required=True),
make_setting_field(
"power_pass",
"VMware password",
field_type="password",
required=True,
),
make_setting_field(
"power_port", "VMware API port (optional)", required=False
),
make_setting_field(
"power_protocol", "VMware API protocol (optional)", required=False
),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
if not vmware.try_pyvmomi_import():
return ["python3-pyvmomi"]
return []
def power_on(self, system_id, context):
"""Power on VMware node."""
power_change = "on"
(
host,
username,
password,
vm_name,
uuid,
port,
protocol,
) = extract_vmware_parameters(context)
power_control_vmware(
host,
username,
password,
vm_name,
uuid,
power_change,
port,
protocol,
)
def power_off(self, system_id, context):
"""Power off VMware node."""
power_change = "off"
(
host,
username,
password,
vm_name,
uuid,
port,
protocol,
) = extract_vmware_parameters(context)
power_control_vmware(
host,
username,
password,
vm_name,
uuid,
power_change,
port,
protocol,
)
def power_query(self, system_id, context):
"""Power query VMware node."""
(
host,
username,
password,
vm_name,
uuid,
port,
protocol,
) = extract_vmware_parameters(context)
return power_query_vmware(
host, username, password, vm_name, uuid, port, protocol
)
def test_defaults_default_to_empty_string(self):
setting = make_setting_field(
factory.make_name('name'), factory.make_name('label'))
self.assertEqual("", setting['default'])
class MicrosoftOCSPowerDriver(PowerDriver):
name = "msftocs"
chassis = True
description = "Microsoft OCS - Chassis Manager"
settings = [
make_setting_field("power_address", "Power address", required=True),
make_setting_field("power_port", "Power port"),
make_setting_field("power_user", "Power user"),
make_setting_field("power_pass",
"Power password",
field_type="password"),
make_setting_field(
"blade_id",
"Blade ID (Typically 1-24)",
scope=SETTING_SCOPE.NODE,
required=True,
),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
# uses urllib2 http client - nothing to look for!
return []
def extract_from_response(self, response, element_tag):
"""Extract text from first element with element_tag in response."""
root = fromstring(response)
return root.findtext(".//ns:%s" % element_tag,
namespaces={"ns": root.nsmap[None]})
def get(self, command, context, params=None):
"""Dispatch a GET request to a Microsoft OCS chassis."""
if params is None:
params = []
else:
params = [param for param in params if bool(param)]
url_base = "http://{power_address}:{power_port}/".format(**context)
url = urllib.parse.urljoin(url_base, command) + "?" + "&".join(params)
authinfo = urllib.request.HTTPPasswordMgrWithDefaultRealm()
authinfo.add_password(None, url, context["power_user"],
context["power_pass"])
proxy_handler = urllib.request.ProxyHandler({})
auth_handler = urllib.request.HTTPBasicAuthHandler(authinfo)
opener = urllib.request.build_opener(proxy_handler, auth_handler)
urllib.request.install_opener(opener)
try:
response = urllib.request.urlopen(url)
except urllib.error.HTTPError as e:
raise PowerConnError(
"Could not make proper connection to Microsoft OCS Chassis."
" HTTP error code: %s" % e.code)
except urllib.error.URLError as e:
raise PowerConnError(
"Could not make proper connection to Microsoft OCS Chassis."
" Server could not be reached: %s" % e.reason)
else:
return response.read()
def set_next_boot_device(self,
context,
pxe=False,
uefi=False,
persistent=False):
"""Set Next Boot Device."""
boot_pxe = "2" if pxe else "3"
boot_uefi = "true" if uefi else "false"
boot_persistent = "true" if persistent else "false"
params = [
"bladeid=%s" % context["blade_id"],
"bootType=%s" % boot_pxe,
"uefi=%s" % boot_uefi,
"persistent=%s" % boot_persistent,
]
self.get("SetNextBoot", context, params)
def get_blades(self, context):
"""Gets available blades.
Returns dictionary of blade numbers and their corresponding
MAC Addresses.
"""
blades = {}
root = fromstring(self.get("GetChassisInfo", context))
namespace = {"ns": root.nsmap[None]}
blade_collections = root.find(".//ns:bladeCollections",
namespaces=namespace)
# Iterate over all BladeInfo Elements
for blade_info in blade_collections:
blade_mac_address = blade_info.find(".//ns:bladeMacAddress",
namespaces=namespace)
macs = []
# Iterate over all NicInfo Elements and add MAC Addresses
for nic_info in blade_mac_address:
macs.append(
nic_info.findtext(".//ns:macAddress",
namespaces=namespace))
macs = [mac for mac in macs if bool(mac)]
if macs:
# Retrive blade id number
bladeid = blade_info.findtext(".//ns:bladeNumber",
namespaces=namespace)
# Add MAC Addresses for blade
blades[bladeid] = macs
return blades
def power_on(self, system_id, context):
"""Power on MicrosoftOCS blade."""
if self.power_query(system_id, context) == "on":
self.power_off(system_id, context)
try:
# Set default (persistent) boot to HDD
self.set_next_boot_device(context, persistent=True)
# Set next boot to PXE
self.set_next_boot_device(context, pxe=True)
# Power on blade
self.get("SetBladeOn", context,
["bladeid=%s" % context["blade_id"]])
except PowerConnError as e:
raise PowerActionError(
"MicrosoftOCS Power Driver unable to power on blade_id %s: %s"
% (context["blade_id"], e))
def power_off(self, system_id, context):
"""Power off MicrosoftOCS blade."""
try:
# Power off blade
self.get("SetBladeOff", context,
["bladeid=%s" % context["blade_id"]])
except PowerConnError as e:
raise PowerActionError(
"MicrosoftOCS Power Driver unable to power off blade_id %s: %s"
% (context["blade_id"], e))
def power_query(self, system_id, context):
"""Power query MicrosoftOCS blade."""
try:
power_state = self.extract_from_response(
self.get(
"GetBladeState",
context,
["bladeid=%s" % context["blade_id"]],
),
"bladeState",
)
except PowerConnError as e:
raise PowerActionError(
"MicrosoftOCS Power Driver unable to power query blade_id %s:"
" %r" % (context["blade_id"], e))
else:
if power_state == MicrosoftOCSState.OFF:
return "off"
elif power_state == MicrosoftOCSState.ON:
return "on"
else:
raise PowerFatalError(
"MicrosoftOCS Power Driver retrieved unknown power state"
" %s for blade_id %s" % (power_state, context["blade_id"]))
class AMTPowerDriver(PowerDriver):
name = "amt"
chassis = False
can_probe = False
description = "Intel AMT"
settings = [
make_setting_field("power_pass",
"Power password",
field_type="password"),
make_setting_field("power_address", "Power address", required=True),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
missing_packages = []
for binary, package in REQUIRED_PACKAGES:
if not shell.has_command_available(binary):
missing_packages.append(package)
return missing_packages
@typed
def _render_wsman_state_xml(self, power_change) -> bytes:
"""Render wsman state XML."""
wsman_state_filename = join(dirname(__file__), "amt.wsman-state.xml")
wsman_state_ns = {
"p": ("http://schemas.dmtf.org/wbem/wscim/1/cim-schema"
"/2/CIM_PowerManagementService")
}
tree = etree.parse(wsman_state_filename)
[ps] = tree.xpath("//p:PowerState", namespaces=wsman_state_ns)
power_states = {"on": "2", "off": "8", "restart": "10"}
ps.text = power_states[power_change]
return etree.tostring(tree)
@typed
def _parse_multiple_xml_docs(self, xml: bytes):
"""Parse multiple XML documents.
Each document must commence with an XML document declaration, i.e.
<?xml ...
Works around a weird decision in `wsman` where it returns multiple XML
documents in a single stream.
"""
xmldecl = re.compile(b"<[?]xml\\s")
xmldecls = xmldecl.finditer(xml)
starts = [match.start() for match in xmldecls]
ends = starts[1:] + [len(xml)]
frags = (xml[start:end] for start, end in zip(starts, ends))
return (etree.fromstring(frag) for frag in frags)
@typed
def get_power_state(self, xml: bytes) -> str:
"""Get PowerState text from XML."""
namespaces = {
"h": ("http://schemas.dmtf.org/wbem/wscim/1/cim-schema"
"/2/CIM_AssociatedPowerManagementService")
}
state = next(
chain.from_iterable(
doc.xpath("//h:PowerState/text()", namespaces=namespaces)
for doc in self._parse_multiple_xml_docs(xml)))
return state
def _set_pxe_boot(self, ip_address, power_pass):
"""Set to PXE for next boot."""
wsman_pxe_options = {
"ChangeBootOrder": (
join(dirname(__file__), "amt.wsman-pxe.xml"),
("http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/"
'CIM_BootConfigSetting?InstanceID="Intel(r) '
'AMT: Boot Configuration 0"'),
),
"SetBootConfigRole": (
join(dirname(__file__), "amt.wsman-boot-config.xml"),
("http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/"
"CIM_BootService?SystemCreationClassName="
'"CIM_ComputerSystem"&SystemName="Intel(r) AMT"'
'&CreationClassName="CIM_BootService"&Name="Intel(r)'
' AMT Boot Service"'),
),
}
wsman_opts = (
"--port",
"16992",
"--hostname",
ip_address,
"--username",
"admin",
"--password",
power_pass,
"--noverifypeer",
"--noverifyhost",
"--input",
"-",
"invoke",
"--method",
)
# Change boot order to PXE and enable boot config request
for method, (schema_file, schema_uri) in wsman_pxe_options.items():
with open(schema_file, "rb") as fd:
command = self._get_wsman_command(*wsman_opts, method,
schema_uri)
self._run(command, power_pass, stdin=fd.read())
@typed
def _run(self,
command: tuple,
power_pass: str,
stdin: bytes = None) -> bytes:
"""Run a subprocess with stdin."""
result = shell.run_command(
*command,
stdin=stdin,
extra_environ={"AMT_PASSWORD": power_pass},
decode=False,
)
if result.returncode != 0:
raise PowerActionError(
"Failed to run command: %s with error: %s" %
(command, result.stderr.decode("utf-8", "replace")))
return result.stdout
@typed
def _issue_amttool_command(
self,
cmd: str,
ip_address: str,
power_pass: str,
amttool_boot_mode=None,
stdin=None,
) -> bytes:
"""Perform a command using amttool."""
command = ("amttool", ip_address, cmd)
if cmd in ("power-cycle", "powerup"):
command += (amttool_boot_mode, )
return self._run(command, power_pass, stdin=stdin)
@typed
def _issue_wsman_command(self, power_change: str, ip_address: str,
power_pass: str) -> bytes:
"""Perform a command using wsman."""
wsman_power_schema_uri = (
"http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/"
"CIM_PowerManagementService?SystemCreationClassName="
'"CIM_ComputerSystem"&SystemName="Intel(r) AMT"'
'&CreationClassName="CIM_PowerManagementService"&Name='
'"Intel(r) AMT Power Management Service"')
wsman_query_schema_uri = (
"http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/"
"CIM_AssociatedPowerManagementService")
command_args = (
"--port",
"16992",
"--hostname",
ip_address,
"--username",
"admin",
"--password",
power_pass,
"--noverifypeer",
"--noverifyhost",
)
if power_change in ("on", "off", "restart"):
stdin = self._render_wsman_state_xml(power_change)
command_args += (
"--input",
"-",
"invoke",
"--method",
"RequestPowerStateChange",
wsman_power_schema_uri,
)
elif power_change == "query":
stdin = None # No input for query
command_args += (
"--optimize",
"--encoding",
"utf-8",
"enumerate",
wsman_query_schema_uri,
)
command = self._get_wsman_command(*command_args)
return self._run(command, power_pass, stdin=stdin)
def amttool_query_state(self, ip_address, power_pass):
"""Ask for node's power state: 'on' or 'off', via amttool."""
# Retry the state if it fails because it often fails the first time
for _ in range(10):
output = self._issue_amttool_command("info", ip_address,
power_pass)
if output:
break
# Wait 1 second between retries. AMT controllers are generally
# very light and may not be comfortable with more frequent
# queries.
sleep(1)
if not output:
raise PowerActionError("amttool power querying failed.")
# Ensure that from this point forward that output is a str.
output = output.decode("utf-8")
# Wide awake (S0), or asleep (S1-S4), but not a clean slate that
# will lead to a fresh boot.
if "S5" in output:
return "off"
for state in ("S0", "S1", "S2", "S3", "S4"):
if state in output:
return "on"
raise PowerActionError("Got unknown power state from node: %s" % state)
def wsman_query_state(self, ip_address, power_pass):
"""Ask for node's power state: 'on' or 'off', via wsman."""
# Retry the state if it fails because it often fails the first time.
for _ in range(10):
output = self._issue_wsman_command("query", ip_address, power_pass)
if output:
break
# Wait 1 second between retries. AMT controllers are generally
# very light and may not be comfortable with more frequent
# queries.
sleep(1)
if not output:
raise PowerActionError("wsman power querying failed.")
else:
state = self.get_power_state(output)
# There are a LOT of possible power states
# 1: Other 9: Power Cycle (Off-Hard)
# 2: On 10: Master Bus Reset
# 3: Sleep - Light 11: Diagnostic Interrupt (NMI)
# 4: Sleep - Deep 12: Off - Soft Graceful
# 5: Power Cycle (Off - Soft) 13: Off - Hard Graceful
# 6: Off - Hard 14: Master Bus Reset Graceful
# 7: Hibernate (Off - Soft) 15: Power Cycle (Off-Soft Graceful)
# 8: Off - Soft 16: Power Cycle (Off-Hard Graceful)
# 17: Diagnostic Interrupt (INIT)
# These are all power states that indicate that the system is
# either ON or will resume function in an ON or Powered Up
# state (e.g. being power cycled currently)
if state in ("2", "3", "4", "5", "7", "9", "10", "14", "15", "16"):
return "on"
elif state in ("6", "8", "12", "13"):
return "off"
else:
raise PowerActionError(
"Got unknown power state from node: %s" % state)
def amttool_restart(self, ip_address, power_pass, amttool_boot_mode):
"""Restart the node via amttool."""
self._issue_amttool_command(
"power_cycle",
ip_address,
power_pass,
amttool_boot_mode=amttool_boot_mode,
stdin=b"yes",
)
def amttool_power_on(self, ip_address, power_pass, amttool_boot_mode):
"""Power on the node via amttool."""
# Try several times. Power commands often fail the first time.
for _ in range(10):
# Issue the AMT command; amttool will prompt for confirmation.
self._issue_amttool_command(
"powerup",
ip_address,
power_pass,
amttool_boot_mode=amttool_boot_mode,
stdin=b"yes",
)
if self.amttool_query_state(ip_address, power_pass) == "on":
return
sleep(1)
raise PowerActionError("Machine is not powering on. Giving up.")
def wsman_power_on(self, ip_address, power_pass, restart=False):
"""Power on the node via wsman."""
power_command = "restart" if restart else "on"
self._set_pxe_boot(ip_address, power_pass)
self._issue_wsman_command(power_command, ip_address, power_pass)
# Check power state several times. It usually takes a second or
# two to get the correct state.
for _ in range(10):
if self.wsman_query_state(ip_address, power_pass) == "on":
return # Success. Machine is on.
sleep(1)
raise PowerActionError("Machine is not powering on. Giving up.")
def amttool_power_off(self, ip_address, power_pass):
"""Power off the node via amttool."""
# Try several times. Power commands often fail the first time.
for _ in range(10):
if self.amttool_query_state(ip_address, power_pass) == "off":
# Success. Machine is off.
return
# Issue the AMT command; amttool will prompt for confirmation.
self._issue_amttool_command("powerdown",
ip_address,
power_pass,
stdin=b"yes")
sleep(1)
raise PowerActionError("Machine is not powering off. Giving up.")
def wsman_power_off(self, ip_address, power_pass):
"""Power off the node via wsman."""
# Issue the wsman command to change power state.
self._issue_wsman_command("off", ip_address, power_pass)
# Check power state several times. It usually takes a second or
# two to get the correct state.
for _ in range(10):
if self.wsman_query_state(ip_address, power_pass) == "off":
return # Success. Machine is off.
else:
sleep(1)
raise PowerActionError("Machine is not powering off. Giving up.")
def _get_amt_command(self, ip_address, power_pass):
"""Retrieve AMT command to use, either amttool or wsman
(if AMT version > 8), for the given system.
"""
# XXX bug=1331214
# Check if the AMT ver > 8
# If so, we need wsman, not amttool
command = self._get_wsman_command(
"identify",
"--port",
"16992",
"--hostname",
ip_address,
"--username",
"admin",
"--password",
power_pass,
)
result = shell.run_command(*command)
if not result.stdout:
for error, error_info in AMT_ERRORS.items():
if error in result.stderr:
raise error_info.get("exception")(
error_info.get("message"))
raise PowerConnError(
f"Unable to retrieve AMT version: {result.stderr}")
else:
match = re.search(r"ProductVersion>AMT\s*([0-9]+)", result.stdout)
if match is None:
raise PowerActionError("Unable to extract AMT version from "
f"amttool output: {result.stdout}")
else:
version = match.group(1)
if int(version) > 8:
return "wsman"
else:
return "amttool"
def _get_amttool_boot_mode(self, boot_mode):
"""Set amttool boot mode."""
# boot_mode tells us whether we're pxe booting or local booting.
# For local booting, the argument to amttool must be empty
# (NOT 'hd', it doesn't work!).
if boot_mode == "local":
return ""
else:
return boot_mode
def _get_wsman_command(self, *args):
base_path = snappy.get_snap_path() or "/"
return (
"wsman",
"-C",
join(base_path, "etc/openwsman/openwsman_client.conf"),
) + args
def _get_ip_address(self, power_address, ip_address):
"""Get the IP address of the AMT BMC."""
# The user specified power_address overrides any automatically
# determined ip_address.
if is_power_parameter_set(
power_address) and not is_power_parameter_set(ip_address):
return power_address
elif is_power_parameter_set(ip_address):
return ip_address
else:
raise PowerSettingError(
"No IP address provided. "
"Please update BMC configuration and try again.")
def power_on(self, system_id, context):
"""Power on AMT node."""
ip_address = self._get_ip_address(context.get("power_address"),
context.get("ip_address"))
power_pass = context.get("power_pass")
amt_command = self._get_amt_command(ip_address, power_pass)
if amt_command == "amttool":
amttool_boot_mode = self._get_amttool_boot_mode(
context.get("boot_mode"))
if self.amttool_query_state(ip_address, power_pass) == "on":
self.amttool_restart(ip_address, power_pass, amttool_boot_mode)
else:
self.amttool_power_on(ip_address, power_pass,
amttool_boot_mode)
elif amt_command == "wsman":
if self.wsman_query_state(ip_address, power_pass) == "on":
self.wsman_power_on(ip_address, power_pass, restart=True)
else:
self.wsman_power_on(ip_address, power_pass)
def power_off(self, system_id, context):
"""Power off AMT node."""
ip_address = self._get_ip_address(context.get("power_address"),
context.get("ip_address"))
power_pass = context.get("power_pass")
amt_command = self._get_amt_command(ip_address, power_pass)
if amt_command == "amttool":
if self.amttool_query_state(ip_address, power_pass) != "off":
self.amttool_power_off(ip_address, power_pass)
elif amt_command == "wsman":
if self.wsman_query_state(ip_address, power_pass) != "off":
self.wsman_power_off(ip_address, power_pass)
def power_query(self, system_id, context):
"""Power query AMT node."""
ip_address = self._get_ip_address(context.get("power_address"),
context.get("ip_address"))
power_pass = context.get("power_pass")
amt_command = self._get_amt_command(ip_address, power_pass)
if amt_command == "amttool":
return self.amttool_query_state(ip_address, power_pass)
elif amt_command == "wsman":
return self.wsman_query_state(ip_address, power_pass)
class WedgePowerDriver(PowerDriver):
name = "wedge"
chassis = False
description = "Facebook's Wedge"
settings = [
make_setting_field("power_address", "IP address", required=True),
make_setting_field("power_user", "Power user"),
make_setting_field("power_pass",
"Power password",
field_type="password"),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
# uses pure-python paramiko ssh client - nothing to look for!
return []
def run_wedge_command(self,
command,
power_address=None,
power_user=None,
power_pass=None,
**extra):
"""Run a single command and return unparsed text from stdout."""
try:
ssh_client = SSHClient()
ssh_client.set_missing_host_key_policy(AutoAddPolicy())
ssh_client.connect(power_address,
username=power_user,
password=power_pass)
_, stdout, _ = ssh_client.exec_command(command)
output = stdout.read().decode("utf-8").strip()
except (SSHException, EOFError, SOCKETError) as e:
raise PowerConnError("Could not make SSH connection to Wedge for "
"%s on %s - %s" %
(power_user, power_address, e))
finally:
ssh_client.close()
return output
def power_on(self, system_id, context):
"""Power on Wedge."""
try:
self.run_wedge_command("/usr/local/bin/wedge_power.sh on",
**context)
except PowerConnError:
raise PowerActionError("Wedge Power Driver unable to power on")
def power_off(self, system_id, context):
"""Power off Wedge."""
try:
self.run_wedge_command("/usr/local/bin/wedge_power.sh off",
**context)
except PowerConnError:
raise PowerActionError("Wedge Power Driver unable to power off")
def power_query(self, system_id, context):
"""Power query Wedge."""
try:
power_state = self.run_wedge_command(
"/usr/local/bin/wedge_power.sh status", **context)
except PowerConnError:
raise PowerActionError("Wedge Power Driver unable to power query")
else:
if power_state in WedgeState.OFF:
return "off"
elif power_state in WedgeState.ON:
return "on"
else:
raise PowerFatalError(
"Wedge Power Driver retrieved unknown power response %s" %
power_state)
class RedfishPowerDriver(RedfishPowerDriverBase):
chassis = True # Redfish API endpoints can be probed and enlisted.
name = 'redfish'
description = "Redfish"
settings = [
make_setting_field('power_address', "Redfish address", required=True),
make_setting_field('power_user', "Redfish user", required=True),
make_setting_field('power_pass',
"Redfish password",
field_type='password',
required=True),
make_setting_field('node_id', "Node ID", scope=SETTING_SCOPE.NODE),
]
ip_extractor = make_ip_extractor('power_address')
def detect_missing_packages(self):
# no required packages
return []
@inlineCallbacks
def process_redfish_context(self, context):
"""Process Redfish power driver context.
Returns the basename of the first member found
in the Redfish Systems:
"Members": [
{
"@odata.id": "/redfish/v1/Systems/1"
}
"""
url = self.get_url(context)
headers = self.make_auth_headers(**context)
node_id = context.get('node_id')
if node_id:
node_id = node_id.encode('utf-8')
else:
node_id = yield self.get_node_id(url, headers)
return url, node_id, headers
@inlineCallbacks
def get_node_id(self, url, headers):
uri = join(url, REDFISH_SYSTEMS_ENDPOINT)
systems, _ = yield self.redfish_request(b"GET", uri, headers)
members = systems.get('Members')
member = members[0].get('@odata.id')
return basename(member).encode('utf-8')
@inlineCallbacks
def set_pxe_boot(self, url, node_id, headers):
"""Set the machine with node_id to PXE boot."""
endpoint = REDFISH_SYSTEMS_ENDPOINT + b'%s/' % node_id
payload = FileBodyProducer(
BytesIO(
json.dumps({
'Boot': {
'BootSourceOverrideEnabled': "Once",
'BootSourceOverrideTarget': "Pxe"
}
}).encode('utf-8')))
yield self.redfish_request(b"PATCH", join(url, endpoint), headers,
payload)
@inlineCallbacks
def power(self, power_change, url, node_id, headers):
"""Issue `power` command."""
endpoint = REDFISH_POWER_CONTROL_ENDPOINT % node_id
payload = FileBodyProducer(
BytesIO(
json.dumps({
'Action': "Reset",
'ResetType': "%s" % power_change
}).encode('utf-8')))
yield self.redfish_request(b"POST", join(url, endpoint), headers,
payload)
@asynchronous
@inlineCallbacks
def power_on(self, node_id, context):
"""Power on machine."""
url, node_id, headers = yield self.process_redfish_context(context)
power_state = yield self.power_query(node_id, context)
# Power off the machine if currently on.
if power_state == 'on':
yield self.power("ForceOff", url, node_id, headers)
# Set to PXE boot.
yield self.set_pxe_boot(url, node_id, headers)
# Power on the machine.
yield self.power("On", url, node_id, headers)
@asynchronous
@inlineCallbacks
def power_off(self, node_id, context):
"""Power off machine."""
url, node_id, headers = yield self.process_redfish_context(context)
# Set to PXE boot.
yield self.set_pxe_boot(url, node_id, headers)
# Power off the machine.
yield self.power("ForceOff", url, node_id, headers)
@asynchronous
@inlineCallbacks
def power_query(self, node_id, context):
"""Power query machine."""
url, node_id, headers = yield self.process_redfish_context(context)
uri = join(url, REDFISH_SYSTEMS_ENDPOINT + b'%s/' % node_id)
node_data, _ = yield self.redfish_request(b"GET", uri, headers)
return node_data.get('PowerState').lower()
class SeaMicroPowerDriver(PowerDriver):
name = "sm15k"
chassis = True
can_probe = True
description = "SeaMicro 15000"
settings = [
make_setting_field(
"system_id", "System ID", scope=SETTING_SCOPE.NODE, required=True
),
make_setting_field("power_address", "Power address", required=True),
make_setting_field("power_user", "Power user"),
make_setting_field(
"power_pass", "Power password", field_type="password"
),
make_setting_field(
"power_control",
"Power control type",
field_type="choice",
choices=SM15K_POWER_CONTROL_CHOICES,
default="ipmi",
required=True,
),
]
ip_extractor = make_ip_extractor("power_address")
def detect_missing_packages(self):
if not shell.has_command_available("ipmitool"):
return ["ipmitool"]
return []
def _power_control_seamicro15k_ipmi(
self, ip, username, password, server_id, power_change
):
"""Power on/off SeaMicro node via ipmitool."""
power_mode = 1 if power_change == "on" else 6
try:
call_and_check(
[
"ipmitool",
"-I",
"lanplus",
"-H",
ip,
"-U",
username,
"-P",
password,
"raw",
"0x2E",
"1",
"0x00",
"0x7d",
"0xab",
power_mode,
"0",
server_id,
]
)
except ExternalProcessError as e:
raise PowerActionError(
"Failed to power %s %s at %s: %s"
% (power_change, server_id, ip, e.output_as_unicode)
)
def _power(self, power_change, context):
"""Power SeaMicro node."""
(
ip,
username,
password,
server_id,
power_control,
) = extract_seamicro_parameters(context)
if power_control == "ipmi":
self._power_control_seamicro15k_ipmi(
ip, username, password, server_id, power_change=power_change
)
elif power_control == "restapi":
power_control_seamicro15k_v09(
ip, username, password, server_id, power_change=power_change
)
elif power_control == "restapi2":
power_control_seamicro15k_v2(
ip, username, password, server_id, power_change=power_change
)
def power_on(self, system_id, context):
"""Power on SeaMicro node."""
self._power("on", context)
def power_off(self, system_id, context):
"""Power off SeaMicro node."""
self._power("off", context)
def power_query(self, system_id, context):
"""Power query SeaMicro node."""
# Query the state.
# Only supported by REST v2.
(
ip,
username,
password,
server_id,
power_control,
) = extract_seamicro_parameters(context)
if power_control == "restapi2":
return power_query_seamicro15k_v2(
ip, username, password, server_id
)
else:
return "unknown"
class IPMIPowerDriver(PowerDriver):
name = "ipmi"
chassis = False
can_probe = False
can_set_boot_order = False
description = "IPMI"
settings = [
make_setting_field(
"power_driver",
"Power driver",
field_type="choice",
choices=IPMI_DRIVER_CHOICES,
default=IPMI_DRIVER.LAN_2_0,
required=True,
),
make_setting_field(
"power_boot_type",
"Power boot type",
field_type="choice",
choices=IPMI_BOOT_TYPE_CHOICES,
default=IPMI_BOOT_TYPE.DEFAULT,
required=False,
),
make_setting_field("power_address", "IP address", required=True),
make_setting_field("power_user", "Power user"),
make_setting_field("power_pass",
"Power password",
field_type="password"),
make_setting_field("k_g", "K_g BMC key", field_type="password"),
make_setting_field(
"cipher_suite_id",
"Cipher Suite ID",
field_type="choice",
choices=IPMI_CIPHER_SUITE_ID_CHOICES,
# freeipmi-tools defaults to 3, not all IPMI BMCs support 17.
default="3",
),
make_setting_field(
"privilege_level",
"Privilege Level",
field_type="choice",
choices=IPMI_PRIVILEGE_LEVEL_CHOICES,
# All MAAS operations can be done as operator.
default=IPMI_PRIVILEGE_LEVEL.OPERATOR.name,
),
make_setting_field("mac_address",
"Power MAC",
scope=SETTING_SCOPE.NODE),
]
ip_extractor = make_ip_extractor("power_address")
wait_time = (4, 8, 16, 32)
def detect_missing_packages(self):
if not shell.has_command_available("ipmipower"):
return ["freeipmi-tools"]
return []
@staticmethod
def _issue_ipmi_chassis_config_command(command,
power_change,
power_address,
power_boot_type=None):
with NamedTemporaryFile("w+", encoding="utf-8") as tmp_config:
# Write out the chassis configuration.
if (power_boot_type is None
or power_boot_type == IPMI_BOOT_TYPE.DEFAULT):
tmp_config.write(IPMI_CONFIG)
else:
tmp_config.write(IPMI_CONFIG_WITH_BOOT_TYPE %
IPMI_BOOT_TYPE_MAPPING[power_boot_type])
tmp_config.flush()
# Use it when running the chassis config command.
# XXX: Not using call_and_check here because we
# need to check stderr.
command = tuple(command) + ("--filename", tmp_config.name)
result = shell.run_command(*command)
# XXX newell 2016-11-21 bug=1516065: Some IPMI hardware have timeout
# issues when trying to set the boot order to PXE. We want to
# continue and not raise an error here.
ipmi_errors = {
key: IPMI_ERRORS[key]
for key in IPMI_ERRORS
if IPMI_ERRORS[key]["exception"] == PowerAuthError
}
for error, error_info in ipmi_errors.items():
if error in result.stderr:
raise error_info.get("exception")(error_info.get("message"))
if result.returncode != 0:
maaslog.warning("Failed to change the boot order to PXE %s: %s" %
(power_address, result.stderr))
@staticmethod
def _issue_ipmipower_command(command, power_change, power_address):
result = shell.run_command(*command)
for error, error_info in IPMI_ERRORS.items():
# ipmipower dumps errors to stdout
if error in result.stdout:
raise error_info.get("exception")(error_info.get("message"))
if result.returncode != 0:
raise PowerError("Failed to power %s %s: %s" %
(power_change, power_address, result.stdout))
match = re.search(r":\s*(on|off)", result.stdout)
return result.stdout if match is None else match.group(1)
def _issue_ipmi_command(self,
power_change,
power_address=None,
power_user=None,
power_pass=None,
power_driver=None,
power_off_mode=None,
mac_address=None,
power_boot_type=None,
k_g=None,
cipher_suite_id=None,
privilege_level=None,
**extra):
"""Issue command to ipmipower, for the given system."""
# This script deliberately does not check the current power state
# before issuing the requested power command. See bug 1171418 for an
# explanation.
if is_power_parameter_set(
mac_address) and not is_power_parameter_set(power_address):
power_address = find_ip_via_arp(mac_address)
# The `-W opensesspriv` workaround is required on many BMCs, and
# should have no impact on BMCs that don't require it.
# See https://bugs.launchpad.net/maas/+bug/1287964
ipmi_chassis_config_command = [
"ipmi-chassis-config",
"-W",
"opensesspriv",
]
ipmipower_command = [
"ipmipower",
"-W",
"opensesspriv",
]
# Arguments in common between chassis config and power control. See
# https://launchpad.net/bugs/1053391 for details of modifying the
# command for power_driver and power_user.
common_args = []
if is_power_parameter_set(power_driver):
common_args.extend(("--driver-type", power_driver))
common_args.extend(("-h", power_address))
if is_power_parameter_set(power_user):
common_args.extend(("-u", power_user))
common_args.extend(("-p", power_pass))
if is_power_parameter_set(k_g):
common_args.extend(("-k", k_g))
if is_power_parameter_set(cipher_suite_id):
common_args.extend(("-I", cipher_suite_id))
if is_power_parameter_set(privilege_level):
common_args.extend(("-l", privilege_level))
else:
# LP:1889788 - Default to communicate at operator level.
common_args.extend(("-l", IPMI_PRIVILEGE_LEVEL.OPERATOR.name))
# Update the power commands with common args.
ipmipower_command.extend(common_args)
# Additional arguments for the power command.
if power_change == "on":
# Update the chassis config commands and call it just when
# powering on the machine.
ipmi_chassis_config_command.extend(common_args)
ipmi_chassis_config_command.append("--commit")
self._issue_ipmi_chassis_config_command(
ipmi_chassis_config_command,
power_change,
power_address,
power_boot_type,
)
ipmipower_command.append("--cycle")
ipmipower_command.append("--on-if-off")
elif power_change == "off":
if power_off_mode == "soft":
ipmipower_command.append("--soft")
else:
ipmipower_command.append("--off")
elif power_change == "query":
ipmipower_command.append("--stat")
# Update or query the power state.
return self._issue_ipmipower_command(ipmipower_command, power_change,
power_address)
def power_on(self, system_id, context):
try:
self._issue_ipmi_command("on", **context)
except PowerAuthError as e:
if (context.get("k_g")
and str(e) == IPMI_ERRORS["k_g invalid"]["message"]):
send_node_event(
EVENT_TYPES.NODE_POWER_ON_FAILED,
system_id,
None,
"Incorrect K_g key, trying again without K_g key",
)
context.pop("k_g")
self._issue_ipmi_command("on", **context)
else:
raise e
def power_off(self, system_id, context):
try:
self._issue_ipmi_command("off", **context)
except PowerAuthError as e:
if (context.get("k_g")
and str(e) == IPMI_ERRORS["k_g invalid"]["message"]):
send_node_event(
EVENT_TYPES.NODE_POWER_OFF_FAILED,
system_id,
None,
"Incorrect K_g key, trying again without K_g key",
)
context.pop("k_g")
self._issue_ipmi_command("off", **context)
else:
raise e
def power_query(self, system_id, context):
try:
return self._issue_ipmi_command("query", **context)
except PowerAuthError as e:
if (context.get("k_g")
and str(e) == IPMI_ERRORS["k_g invalid"]["message"]):
send_node_event(
EVENT_TYPES.NODE_POWER_QUERY_FAILED,
system_id,
None,
"Incorrect K_g key, trying again without K_g key",
)
context.pop("k_g")
return self._issue_ipmi_command("query", **context)
else:
raise e
class VirshPodDriver(PodDriver):
name = 'virsh'
description = "Virsh (virtual systems)"
settings = [
make_setting_field('power_address', "Virsh address", required=True),
make_setting_field('power_pass',
"Virsh password (optional)",
required=False,
field_type='password'),
make_setting_field('power_id',
"Virsh VM ID",
scope=SETTING_SCOPE.NODE,
required=True),
]
ip_extractor = make_ip_extractor('power_address',
IP_EXTRACTOR_PATTERNS.URL)
def detect_missing_packages(self):
missing_packages = set()
for binary, package in REQUIRED_PACKAGES:
if not shell.has_command_available(binary):
missing_packages.add(package)
return list(missing_packages)
@inlineCallbacks
def power_control_virsh(self,
power_address,
power_id,
power_change,
power_pass=None,
**kwargs):
"""Powers controls a VM using virsh."""
# Force password to None if blank, as the power control
# script will send a blank password if one is not set.
if power_pass == '':
power_pass = None
conn = VirshSSH()
logged_in = yield deferToThread(conn.login, power_address, power_pass)
if not logged_in:
raise VirshError('Failed to login to virsh console.')
state = yield deferToThread(conn.get_machine_state, power_id)
if state is None:
raise VirshError('%s: Failed to get power state' % power_id)
if state == VirshVMState.OFF:
if power_change == 'on':
powered_on = yield deferToThread(conn.poweron, power_id)
if powered_on is False:
raise VirshError('%s: Failed to power on VM' % power_id)
elif state == VirshVMState.ON:
if power_change == 'off':
powered_off = yield deferToThread(conn.poweroff, power_id)
if powered_off is False:
raise VirshError('%s: Failed to power off VM' % power_id)
@inlineCallbacks
def power_state_virsh(self,
power_address,
power_id,
power_pass=None,
**kwargs):
"""Return the power state for the VM using virsh."""
# Force password to None if blank, as the power control
# script will send a blank password if one is not set.
if power_pass == '':
power_pass = None
conn = VirshSSH()
logged_in = yield deferToThread(conn.login, power_address, power_pass)
if not logged_in:
raise VirshError('Failed to login to virsh console.')
state = yield deferToThread(conn.get_machine_state, power_id)
if state is None:
raise VirshError('Failed to get domain: %s' % power_id)
try:
return VM_STATE_TO_POWER_STATE[state]
except KeyError:
raise VirshError('Unknown state: %s' % state)
@asynchronous
def power_on(self, system_id, context):
"""Power on Virsh node."""
return self.power_control_virsh(power_change='on', **context)
@asynchronous
def power_off(self, system_id, context):
"""Power off Virsh node."""
return self.power_control_virsh(power_change='off', **context)
@asynchronous
def power_query(self, system_id, context):
"""Power query Virsh node."""
return self.power_state_virsh(**context)
@inlineCallbacks
def get_virsh_connection(self, context):
"""Connect and return the virsh connection."""
power_address = context.get('power_address')
power_pass = context.get('power_pass')
# Login to Virsh console.
conn = VirshSSH()
logged_in = yield deferToThread(conn.login, power_address, power_pass)
if not logged_in:
raise VirshError('Failed to login to virsh console.')
return conn
@inlineCallbacks
def discover(self, system_id, context):
"""Discover all resources.
Returns a defer to a DiscoveredPod object.
"""
conn = yield self.get_virsh_connection(context)
# Check that we have at least one storage pool. If not, create it.
pools = yield deferToThread(conn.list_pools)
if not len(pools):
yield deferToThread(conn.create_storage_pool)
# Discover pod resources.
discovered_pod = yield deferToThread(conn.get_pod_resources)
# Discovered pod hints.
discovered_pod.hints = yield deferToThread(conn.get_pod_hints)
# Discover VMs.
machines = []
virtual_machines = yield deferToThread(conn.list_machines)
for vm in virtual_machines:
discovered_machine = yield deferToThread(
conn.get_discovered_machine,
vm,
storage_pools=discovered_pod.storage_pools)
if discovered_machine is not None:
discovered_machine.cpu_speed = discovered_pod.cpu_speed
machines.append(discovered_machine)
discovered_pod.machines = machines
# Set KVM Pod tags to 'virtual'.
discovered_pod.tags = ['virtual']
# Return the DiscoveredPod
return discovered_pod
@inlineCallbacks
def compose(self, system_id, context, request):
"""Compose machine."""
conn = yield self.get_virsh_connection(context)
default_pool = context.get('default_storage_pool_id',
context.get('default_storage_pool'))
created_machine = yield deferToThread(conn.create_domain, request,
default_pool)
hints = yield deferToThread(conn.get_pod_hints)
return created_machine, hints
@inlineCallbacks
def decompose(self, system_id, context):
"""Decompose machine."""
conn = yield self.get_virsh_connection(context)
yield deferToThread(conn.delete_domain, context['power_id'])
hints = yield deferToThread(conn.get_pod_hints)
return hints
class LXDPodDriver(PodDriver):
name = "lxd"
chassis = True
can_probe = False
can_set_boot_order = False
description = "LXD (virtual systems)"
settings = [
make_setting_field("power_address", "LXD address", required=True),
make_setting_field(
"instance_name",
"Instance name",
scope=SETTING_SCOPE.NODE,
required=True,
),
make_setting_field(
"project",
"LXD project",
required=True,
default="default",
),
make_setting_field(
"password",
"LXD password (optional)",
required=False,
field_type="password",
),
]
ip_extractor = make_ip_extractor("power_address",
IP_EXTRACTOR_PATTERNS.URL)
def detect_missing_packages(self):
# python3-pylxd is a required package
# for maas and is installed by default.
return []
@typed
def get_url(self, context: dict):
"""Return url for the LXD host."""
power_address = context.get("power_address")
url = urlparse(power_address)
if not url.scheme:
# When the scheme is not included in the power address
# urlparse puts the url into path.
url = url._replace(scheme="https", netloc="%s" % url.path, path="")
if not url.port:
if url.netloc:
url = url._replace(netloc="%s:8443" % url.netloc)
else:
# Similar to above, we need to swap netloc and path.
url = url._replace(netloc="%s:8443" % url.path, path="")
return url.geturl()
@typed
@asynchronous
@threadDeferred
def power_on(self, pod_id: int, context: dict):
"""Power on LXD VM."""
machine = self._get_machine(pod_id, context)
if LXD_VM_POWER_STATE[machine.status_code] == "off":
machine.start()
@typed
@asynchronous
@threadDeferred
def power_off(self, pod_id: int, context: dict):
"""Power off LXD VM."""
machine = self._get_machine(pod_id, context)
if LXD_VM_POWER_STATE[machine.status_code] == "on":
machine.stop()
@typed
@asynchronous
@threadDeferred
def power_query(self, pod_id: int, context: dict):
"""Power query LXD VM."""
machine = self._get_machine(pod_id, context)
state = machine.status_code
try:
return LXD_VM_POWER_STATE[state]
except KeyError:
raise LXDPodError(
f"Pod {pod_id}: Unknown power status code: {state}")
@threadDeferred
def discover_projects(self, pod_id: int, context: dict):
"""Discover the list of projects in a pod."""
client = self._get_client(pod_id, context)
if not client.has_api_extension("projects"):
raise LXDPodError(
"Please upgrade your LXD host to 3.6+ for projects support.")
return [{
"name": project.name,
"description": project.description
} for project in client.projects.all()]
@threadDeferred
def discover(self, pod_id: int, context: dict):
"""Discover all Pod host resources."""
# Connect to the Pod and make sure it is valid.
client = self._get_client(pod_id, context)
if not client.has_api_extension("virtual-machines"):
raise LXDPodError(
"Please upgrade your LXD host to 3.19+ for virtual machine support."
)
self._ensure_project(client)
# get MACs for host interfaces. "unknown" interfaces are considered too
# to match ethernets in containers
networks_state = [
net.state() for net in client.networks.all()
if net.type in ("unknown", "physical")
]
mac_addresses = list(
{state.hwaddr
for state in networks_state if state.hwaddr})
environment = client.host_info["environment"]
# After the region creates the Pod object it will sync LXD commissioning
# data for all hardware information.
discovered_pod = DiscoveredPod(
# client.host_info["environment"]["architectures"] reports all the
# architectures the host CPU supports, not the architectures LXD
# supports. On x86_64 LXD reports [x86_64, i686] however LXD does
# not currently support VMs on i686. The LXD API currently does not
# have a way to query which architectures are usable for VMs. The
# safest bet is to just use the kernel_architecture.
architectures=[
kernel_to_debian_architecture(
environment["kernel_architecture"])
],
name=environment["server_name"],
version=environment["server_version"],
mac_addresses=mac_addresses,
capabilities=[
Capabilities.COMPOSABLE,
Capabilities.DYNAMIC_LOCAL_STORAGE,
Capabilities.OVER_COMMIT,
Capabilities.STORAGE_POOLS,
],
)
# Check that we have at least one storage pool.
# If not, user should be warned that they need to create one.
storage_pools = client.storage_pools.all()
if not storage_pools:
raise LXDPodError(
"No storage pools exists. Please create a storage pool in LXD."
)
# Discover Storage Pools.
pools = []
local_storage = 0
for storage_pool in storage_pools:
discovered_storage_pool = self._get_discovered_pod_storage_pool(
storage_pool)
local_storage += discovered_storage_pool.storage
pools.append(discovered_storage_pool)
discovered_pod.storage_pools = pools
discovered_pod.local_storage = local_storage
host_cpu_speed = lxd_cpu_speed(client.resources)
# Discover VMs.
projects = [project.name for project in client.projects.all()]
machines = []
for project in projects:
project_cli = self._get_client(pod_id, context, project=project)
for virtual_machine in project_cli.virtual_machines.all():
discovered_machine = self._get_discovered_machine(
project_cli,
virtual_machine,
storage_pools=discovered_pod.storage_pools,
)
discovered_machine.cpu_speed = host_cpu_speed
machines.append(discovered_machine)
discovered_pod.machines = machines
# Return the DiscoveredPod.
return discovered_pod
@threadDeferred
def get_commissioning_data(self, pod_id: int, context: dict):
"""Retreive commissioning data from LXD."""
client = self._get_client(pod_id, context)
resources = {
# /1.0
**client.host_info,
# /1.0/resources
"resources": client.resources,
# /1.0/networks/<network>/state
"networks":
{net.name: dict(net.state())
for net in client.networks.all()},
}
return {LXD_OUTPUT_NAME: resources}
@threadDeferred
def compose(self, pod_id: int, context: dict, request: RequestedMachine):
"""Compose a virtual machine."""
client = self._get_client(pod_id, context)
storage_pools = client.storage_pools.all()
default_storage_pool = context.get("default_storage_pool_id",
context.get("default_storage_pool"))
include_profile = client.profiles.exists(LXD_MAAS_PROFILE)
definition = get_lxd_machine_definition(
request, include_profile=include_profile)
definition["devices"] = {
**self._get_machine_disks(request.block_devices, storage_pools, default_storage_pool),
**self._get_machine_nics(request),
}
# Create the machine.
machine = client.virtual_machines.create(definition, wait=True)
# Pod hints are updated on the region after the machine is composed.
discovered_machine = self._get_discovered_machine(client,
machine,
storage_pools,
request=request)
# Update the machine cpu speed.
discovered_machine.cpu_speed = lxd_cpu_speed(client.resources)
return discovered_machine, DiscoveredPodHints()
@threadDeferred
def decompose(self, pod_id: int, context: dict):
"""Decompose a virtual machine."""
machine = self._get_machine(pod_id, context)
if not machine:
maaslog.warning(
f"Pod {pod_id}: machine {context['instance_name']} not found")
return DiscoveredPodHints()
if machine.status_code != 102: # 102 - Stopped
machine.stop(force=True, wait=True)
# collect machine attributes before removing it
devices = machine.devices
client = machine.client
machine.delete(wait=True)
self._delete_machine_volumes(client, pod_id, devices)
# Hints are updated on the region for LXDPodDriver.
return DiscoveredPodHints()
def _get_machine_disks(self, requested_disks, storage_pools,
default_storage_pool):
"""Return definitions for machine disks, after creating needed volumes."""
disks = {}
for idx, disk in enumerate(requested_disks):
pool = self._get_usable_storage_pool(disk, storage_pools,
default_storage_pool)
size = str(disk.size)
if idx == 0:
label = "root"
path = "/"
extra_conf = {
"boot.priority": "0",
"size": size,
}
else:
label = f"disk{idx}"
path = ""
volume = self._create_volume(pool, size)
extra_conf = {"source": volume.name}
disks[label] = {
"path": path,
"type": "disk",
"pool": pool.name,
**extra_conf,
}
return disks
def _get_machine_nics(self, request):
usable_parents = sorted(
(iface
for iface in request.known_host_interfaces if iface.dhcp_enabled),
# sort bridges first
key=lambda iface: iface.attach_type != InterfaceAttachType.BRIDGE,
)
try:
default_parent = usable_parents[0]
except IndexError:
raise LXDPodError("No host network to attach VM interfaces to")
nics = {}
ifnames = set(iface.ifname for iface in request.interfaces
if iface.ifname)
ifindex = 0
for idx, interface in enumerate(request.interfaces):
ifname = interface.ifname
if ifname is None:
# get the next available interface name
ifname = f"eth{ifindex}"
while ifname in ifnames:
ifindex += 1
ifname = f"eth{ifindex}"
ifnames.add(ifname)
nic = get_lxd_nic_device(ifname, interface, default_parent)
# Set to boot from the first nic
if idx == 0:
nic["boot.priority"] = "1"
nics[ifname] = nic
return nics
def _create_volume(self, pool, size):
"""Create a storage volume."""
name = f"maas-{uuid.uuid4()}"
return pool.volumes.create(
"custom",
{
"name": name,
"content_type": "block",
"config": {
"size": size
}
},
)
def _delete_machine_volumes(self, client, pod_id: int, devices: dict):
"""Delete machine volumes.
The VM root volume is not removed as it's handled automatically by LXD.
"""
for device in devices.values():
source = device.get("source")
if device["type"] != "disk" or not source:
continue
pool_name = device["pool"]
try:
pool = client.storage_pools.get(pool_name)
pool.volumes.get("custom", source).delete()
except Exception:
maaslog.warning(
f"Pod {pod_id}: failed to delete volume {source} in pool {pool_name}"
)
def _ensure_project(self, client):
"""Ensure the project that the client is configured with exists."""
if client.projects.exists(client.project):
return
# When creating a project, by default don't enable per-project images
# and storage. Enabling those setting up at least one storage pool so
# that VMs can be created. Users can change those settings later
# without affecting MAAS functionality.
client.projects.create(
name=client.project,
description="Project managed by MAAS",
config={
"features.images": "false",
"features.profiles": "true",
"features.storage.volumes": "false",
},
)
def _get_usable_storage_pool(self,
disk,
storage_pools,
default_storage_pool=None):
"""Return the storage pool and type that has enough space for `disk.size`."""
# Filter off of tags.
filtered_storage_pools = [
storage_pool for storage_pool in storage_pools
if storage_pool.name in disk.tags
]
if filtered_storage_pools:
for storage_pool in filtered_storage_pools:
resources = storage_pool.resources.get()
available = resources.space["total"] - resources.space["used"]
if disk.size <= available:
return storage_pool
raise PodInvalidResources(
"Not enough storage space on storage pools: %s" % (", ".join([
storage_pool.name
for storage_pool in filtered_storage_pools
])))
# Filter off of default storage pool name.
if default_storage_pool:
filtered_storage_pools = [
storage_pool for storage_pool in storage_pools
if storage_pool.name == default_storage_pool
]
if filtered_storage_pools:
default_storage_pool = filtered_storage_pools[0]
resources = default_storage_pool.resources.get()
available = resources.space["total"] - resources.space["used"]
if disk.size <= available:
return default_storage_pool
raise PodInvalidResources(
f"Not enough space in default storage pool: {default_storage_pool.name}"
)
raise LXDPodError(
f"Default storage pool '{default_storage_pool}' doesn't exist."
)
# No filtering, just find a storage pool with enough space.
for storage_pool in storage_pools:
resources = storage_pool.resources.get()
available = resources.space["total"] - resources.space["used"]
if disk.size <= available:
return storage_pool
raise PodInvalidResources(
"Not enough storage space on any storage pools: %s" %
(", ".join([storage_pool.name for storage_pool in storage_pools])))
def _get_discovered_machine(self,
client,
machine,
storage_pools,
request=None):
"""Get the discovered machine."""
# Check the power state first.
state = machine.status_code
try:
power_state = LXD_VM_POWER_STATE[state]
except KeyError:
maaslog.error(
f"{machine.name}: Unknown power status code: {state}")
power_state = "unknown"
def _get_discovered_block_device(name, device, requested_device=None):
tags = requested_device.tags if requested_device else []
# When LXD creates a QEMU disk the serial is always lxd_{device
# name}. The device name is commonly "root" for the first disk. The
# model and serial must be correctly defined here otherwise MAAS
# will delete the disk created during composition which results in
# losing the storage pool link. Without the storage pool link MAAS
# can't determine how much of the storage pool has been used.
serial = f"lxd_{name}"
source = device.get("source")
if source:
pool = client.storage_pools.get(device["pool"])
volume = pool.volumes.get("custom", source)
size = volume.config.get("size")
else:
size = device.get("size")
# Default disk size is 10GB in LXD
size = convert_lxd_byte_suffixes(size or "10GB")
return DiscoveredMachineBlockDevice(
model="QEMU HARDDISK",
serial=serial,
id_path=f"/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_{serial}",
size=size,
tags=tags,
storage_pool=device.get("pool"),
)
expanded_config = machine.expanded_config
iface_to_mac = {
key.split(".")[1]: value
for key, value in expanded_config.items() if key.endswith("hwaddr")
}
def _get_discovered_interface(name, device, boot):
if "network" in device:
# Try finding the nictype from the networks.
# XXX: This should work for "bridge" networks,
# but will most likely produce weird results for the
# other types.
network = client.networks.get(device["network"])
attach_type = network.type
attach_name = network.name
else:
attach_name = device["parent"]
nictype = device["nictype"]
attach_type = (InterfaceAttachType.BRIDGE
if nictype == "bridged" else nictype)
mac = device.get("hwaddr")
if mac is None:
mac = iface_to_mac.get(name)
return DiscoveredMachineInterface(
mac_address=mac,
vid=int(device.get("vlan", get_vid_from_ifname(name))),
boot=boot,
attach_type=attach_type,
attach_name=attach_name,
)
extra_block_devices = 0
block_devices = []
interfaces = []
for name, device in machine.expanded_devices.items():
if device["type"] == "disk":
requested_device = None
if request:
# for composed VMs, the root disk is always the first
# one. Adjust the index so that it matches the requested
# device
if name == "root":
index = 0
else:
extra_block_devices += 1
index = extra_block_devices
requested_device = request.block_devices[index]
block_devices.append(
_get_discovered_block_device(
name, device, requested_device=requested_device))
elif device["type"] == "nic":
interfaces.append(
_get_discovered_interface(name, device, not interfaces))
# LXD uses different suffixes to store memory so make
# sure we convert to MiB, which is what MAAS uses.
memory = expanded_config.get("limits.memory")
if memory is not None:
memory = convert_lxd_byte_suffixes(memory, divisor=1024**2)
else:
memory = 1024
hugepages_backed = _get_bool(
expanded_config.get("limits.memory.hugepages"))
cores, pinned_cores = _parse_cpu_cores(
expanded_config.get("limits.cpu"))
return DiscoveredMachine(
hostname=machine.name,
architecture=kernel_to_debian_architecture(machine.architecture),
# 1 core and 1GiB of memory (we need it in MiB) is default for
# LXD if not specified.
cores=cores,
memory=memory,
cpu_speed=0,
interfaces=interfaces,
block_devices=block_devices,
power_state=power_state,
power_parameters={
"instance_name": machine.name,
"project": client.project,
},
tags=[],
hugepages_backed=hugepages_backed,
pinned_cores=pinned_cores,
# LXD VMs use only UEFI.
bios_boot_method="uefi",
)
def _get_discovered_pod_storage_pool(self, storage_pool):
"""Get the Pod storage pool."""
storage_pool_config = storage_pool.config
# Sometimes the config is empty, use get() method on the dictionary in case.
storage_pool_path = storage_pool_config.get("source")
storage_pool_resources = storage_pool.resources.get()
total_storage = storage_pool_resources.space["total"]
return DiscoveredPodStoragePool(
# No ID's with LXD so we are just using the name as the ID.
id=storage_pool.name,
name=storage_pool.name,
path=storage_pool_path,
type=storage_pool.driver,
storage=total_storage,
)
@typed
def _get_machine(self, pod_id: int, context: dict, fail: bool = True):
"""Retrieve LXD VM.
If "fail" is False, return None instead of raising an exception.
"""
client = self._get_client(pod_id, context)
instance_name = context.get("instance_name")
try:
return client.virtual_machines.get(instance_name)
except NotFound:
if fail:
raise LXDPodError(
f"Pod {pod_id}: LXD VM {instance_name} not found.")
return None
@typed
def _get_client(self,
pod_id: int,
context: dict,
project: Optional[str] = None):
"""Connect PyLXD client."""
if not project:
project = context.get("project", "default")
endpoint = self.get_url(context)
try:
client = Client(
endpoint=endpoint,
project=project,
cert=get_maas_cert_tuple(),
verify=False,
)
if not client.trusted:
password = context.get("password")
if password:
client.authenticate(password)
else:
raise LXDPodError(
f"Pod {pod_id}: Certificate is not trusted and no password was given."
)
except ClientConnectionFailed:
raise LXDPodError(
f"Pod {pod_id}: Failed to connect to the LXD REST API.")
return client
