def on_shell_open(self, data):
if self.ssh_info:
self.disconnect()
self.ssh_info = {
'backend_id': data['backend_id'],
'machine_id': data['machine_id'],
'host': data['host'],
'columns': data['cols'],
'rows': data['rows'],
}
log.info("opened shell")
self.shell = Shell(data['host'])
try:
key_id, ssh_user = self.shell.autoconfigure(
self.user, data['backend_id'], data['machine_id'])
except Exception as exc:
if isinstance(exc, MachineUnauthorizedError):
err = 'Permission denied (publickey).'
else:
err = str(exc)
self.ssh_info['error'] = err
self.emit_shell_data(err)
self.disconnect()
return
self.ssh_info.update(key_id=key_id, ssh_user=ssh_user)
self.channel = self.shell.ssh.invoke_shell('xterm', data['cols'],
data['rows'])
self.spawn(self.get_ssh_data)
def on_shell_open(self, data):
log.info("opened shell")
self.shell = Shell(data['host'])
key_id, ssh_user = self.shell.autoconfigure(self.user,
data['backend_id'],
data['machine_id'])
self.channel = self.shell.ssh.invoke_shell('xterm')
self.spawn(self.get_ssh_data)
def shell_stream(request):
"""Execute command via SSH and stream output
Streams output using the hidden iframe technique.
"""
def parse(lines):
"""Generator function that converts stdout_lines to html with
js which it streams in a hidden iframe.
"""
# send some blank data to fill the initial buffer and get (webkit)
# browsers to display right away what's sent
#yield 1024*'\0'
# start the html response
yield "<html><body>\n"
js = "<script type='text/javascript'>parent.appendShell('%s', '%s');</script>\n"
for line in lines:
# get commands output, line by line
clear_line = line.replace('\'', '\\\'')
clear_line = clear_line.replace('\n', '<br/>')
clear_line = clear_line.replace('\r', '')
#.replace('<','<').replace('>', '>')
ret = js % (clear_line, cmd_id)
yield ret
js = "<script type='text/javascript'>"
js += "parent.completeShell(%s, '%s');</script>\n"
yield js % (1, cmd_id) # FIXME
yield "</body></html>\n"
log.info("got shell_stream request")
backend_id = request.matchdict['backend']
machine_id = request.matchdict['machine']
cmd = request.params.get('command')
cmd_id = request.params.get('command_id').encode('utf-8', 'ignore')
host = request.params.get('host')
try:
if not cmd:
raise RequiredParameterMissingError("command")
if not host:
raise RequiredParameterMissingError("host")
user = user_from_request(request)
shell = Shell(host)
shell.autoconfigure(user, backend_id, machine_id)
# stdout_lines is a generator that spits out lines of combined
# stdout and stderr output. cmd is executed via the shell on the background
# and the stdout_lines generator is immediately available. stdout_lines
# will block if no line is in the buffer and will stop iterating once the
# command is completed and the pipe is closed.
stdout_lines = shell.command_stream(cmd)
except Exception as e:
message = ["Failed to execute command\n", "Error: %s \n" % e]
return Response(status=500, app_iter=parse(message))
return Response(status=200, app_iter=parse(stdout_lines))
def ssh_command(email, backend_id, machine_id, host, command,
key_id=None, username=None, password=None, port=22):
user = user_from_email(email)
shell = Shell(host)
key_id, ssh_user = shell.autoconfigure(user, backend_id, machine_id,
key_id, username, password, port)
retval, output = shell.command(command)
shell.disconnect()
if retval:
from mist.io.methods import notify_user
notify_user(user, "Async command failed for machine %s (%s)" %
(machine_id, host), output)
def post_deploy_steps(self,
email,
backend_id,
machine_id,
monitoring,
command,
key_id=None,
username=None,
password=None,
port=22):
from mist.io.methods import ssh_command, connect_provider, enable_monitoring
from mist.io.methods import notify_user, notify_admin
if multi_user:
from mist.core.methods import enable_monitoring
from mist.core.helpers import log_event
else:
from mist.io.methods import enable_monitoring
log_event = lambda *args, **kwargs: None
user = user_from_email(email)
try:
# find the node we're looking for and get its hostname
conn = connect_provider(user.backends[backend_id])
nodes = conn.list_nodes()
node = None
for n in nodes:
if n.id == machine_id:
node = n
break
if node and len(node.public_ips):
# filter out IPv6 addresses
ips = filter(lambda ip: ':' not in ip, node.public_ips)
host = ips[0]
else:
raise self.retry(exc=Exception(), countdown=120, max_retries=5)
try:
from mist.io.shell import Shell
shell = Shell(host)
# connect with ssh even if no command, to create association
# to be able to enable monitoring
key_id, ssh_user = shell.autoconfigure(user, backend_id, node.id,
key_id, username, password,
port)
backend = user.backends[backend_id]
msg = "Backend:\n Name: %s\n Id: %s\n" % (backend.title,
backend_id)
msg += "Machine:\n Name: %s\n Id: %s\n" % (node.name, node.id)
if command:
log_dict = {
'email': email,
'event_type': 'job',
'backend_id': backend_id,
'machine_id': machine_id,
'job_id': uuid.uuid4().hex,
'command': command,
'host': host,
'key_id': key_id,
'ssh_user': ssh_user,
}
log_event(action='deployment_script_started', **log_dict)
start_time = time()
retval, output = shell.command(command)
execution_time = time() - start_time
output = output.decode('utf-8', 'ignore')
title = "Deployment script %s" % ('failed'
if retval else 'succeeded')
notify_user(user,
title,
backend_id=backend_id,
machine_id=machine_id,
machine_name=node.name,
command=command,
output=output,
duration=execution_time,
retval=retval,
error=retval > 0)
log_event(action='deployment_script_finished',
error=retval > 0,
return_value=retval,
stdout=output,
**log_dict)
shell.disconnect()
if monitoring:
try:
enable_monitoring(
user,
backend_id,
node.id,
name=node.name,
dns_name=node.extra.get('dns_name', ''),
public_ips=ips,
no_ssh=False,
dry=False,
)
except Exception as e:
print repr(e)
notify_user(
user, "Enable monitoring failed for machine %s (%s)" %
(node.name, node.id), repr(e))
notify_admin(
'Enable monitoring on creation failed for user %s machine %s: %r'
% (email, node.name, e))
except (ServiceUnavailableError, SSHException) as exc:
raise self.retry(exc=exc, countdown=60, max_retries=5)
except Exception as exc:
if str(exc).startswith('Retry'):
raise
notify_user(
user, "Deployment script failed for machine %s after 5 retries" %
node.id)
notify_admin(
"Deployment script failed for machine %s in backend %s by user %s after 5 retries"
% (node.id, backend_id, email), repr(exc))
log_event(
email=email,
event_type='job',
action='deployment_script_failed',
backend_id=backend_id,
machine_id=machine_id,
enable_monitoring=bool(monitoring),
command=command,
error="Couldn't connect to run post deploy steps (5 attempts).",
)
def run_deploy_script(self,
email,
backend_id,
machine_id,
command,
key_id=None,
username=None,
password=None,
port=22):
from mist.io.methods import ssh_command, connect_provider
from mist.io.methods import notify_user, notify_admin
user = user_from_email(email)
try:
# find the node we're looking for and get its hostname
conn = connect_provider(user.backends[backend_id])
nodes = conn.list_nodes()
node = None
for n in nodes:
if n.id == machine_id:
node = n
break
if node and len(node.public_ips):
# filter out IPv6 addresses
ips = filter(lambda ip: ':' not in ip, node.public_ips)
host = ips[0]
else:
raise self.retry(exc=Exception(), countdown=60, max_retries=5)
try:
from mist.io.shell import Shell
shell = Shell(host)
key_id, ssh_user = shell.autoconfigure(user, backend_id, node.id,
key_id, username, password,
port)
start_time = time()
retval, output = shell.command(command)
execution_time = time() - start_time
shell.disconnect()
msg = """
Command: %s
Return value: %s
Duration: %s seconds
Output:
%s""" % (command, retval, execution_time, output)
if retval:
notify_user(
user, "Deployment script failed for machine %s (%s)" %
(node.name, node.id), msg)
amqp_log(
"Deployment script failed for user %s machine %s (%s): %s"
% (user, node.name, node.id, msg))
else:
notify_user(
user, "Deployment script succeeded for machine %s (%s)" %
(node.name, node.id), msg)
amqp_log(
"Deployment script succeeded for user %s machine %s (%s): %s"
% (user, node.name, node.id, msg))
except ServiceUnavailableError as exc:
raise self.retry(exc=exc, countdown=60, max_retries=5)
except Exception as exc:
if str(exc).startswith('Retry'):
return
amqp_log(
"Deployment script failed for machine %s in backend %s by user %s after 5 retries: %s"
% (node.id, backend_id, email, repr(exc)))
notify_user(
user, "Deployment script failed for machine %s after 5 retries" %
node.id)
notify_admin(
"Deployment script failed for machine %s in backend %s by user %s after 5 retries"
% (node.id, backend_id, email), repr(exc))
def post_deploy_steps(self,
email,
cloud_id,
machine_id,
monitoring,
command,
key_id=None,
username=None,
password=None,
port=22,
script_id='',
script_params='',
job_id=None,
hostname='',
plugins=None,
post_script_id='',
post_script_params=''):
from mist.io.methods import connect_provider, probe_ssh_only
from mist.io.methods import notify_user, notify_admin
from mist.io.methods import create_dns_a_record
if multi_user:
from mist.core.methods import enable_monitoring
from mist.core.tasks import run_script
from mist.core.helpers import log_event
else:
from mist.io.methods import enable_monitoring
log_event = lambda *args, **kwargs: None
job_id = job_id or uuid.uuid4().hex
user = user_from_email(email)
tmp_log = lambda msg, *args: log.error('Post deploy: %s' % msg, *args)
tmp_log('Entering post deploy steps for %s %s %s', user.email, cloud_id,
machine_id)
try:
# find the node we're looking for and get its hostname
node = None
try:
conn = connect_provider(user.clouds[cloud_id])
nodes = conn.list_nodes() # TODO: use cache
for n in nodes:
if n.id == machine_id:
node = n
break
tmp_log('run list_machines')
except:
raise self.retry(exc=Exception(), countdown=10, max_retries=10)
if node and len(node.public_ips):
# filter out IPv6 addresses
ips = filter(lambda ip: ':' not in ip, node.public_ips)
host = ips[0]
else:
tmp_log('ip not found, retrying')
raise self.retry(exc=Exception(), countdown=60, max_retries=20)
try:
from mist.io.shell import Shell
shell = Shell(host)
# connect with ssh even if no command, to create association
# to be able to enable monitoring
tmp_log('attempting to connect to shell')
key_id, ssh_user = shell.autoconfigure(user, cloud_id, node.id,
key_id, username, password,
port)
tmp_log('connected to shell')
result = probe_ssh_only(user,
cloud_id,
machine_id,
host=None,
key_id=key_id,
ssh_user=ssh_user,
shell=shell)
log_dict = {
'email': email,
'event_type': 'job',
'cloud_id': cloud_id,
'machine_id': machine_id,
'job_id': job_id,
'host': host,
'key_id': key_id,
'ssh_user': ssh_user,
}
log_event(action='probe', result=result, **log_dict)
cloud = user.clouds[cloud_id]
msg = "Cloud:\n Name: %s\n Id: %s\n" % (cloud.title, cloud_id)
msg += "Machine:\n Name: %s\n Id: %s\n" % (node.name, node.id)
if hostname:
try:
record = create_dns_a_record(user, hostname, host)
hostname = '.'.join((record.name, record.zone.domain))
log_event(action='create_dns_a_record',
hostname=hostname,
**log_dict)
except Exception as exc:
log_event(action='create_dns_a_record',
error=str(exc),
**log_dict)
error = False
if script_id and multi_user:
tmp_log('will run script_id %s', script_id)
ret = run_script.run(user.email,
script_id,
cloud_id,
machine_id,
params=script_params,
host=host,
job_id=job_id)
error = ret['error']
tmp_log('executed script_id %s', script_id)
elif command:
tmp_log('will run command %s', command)
log_event(action='deployment_script_started',
command=command,
**log_dict)
start_time = time()
retval, output = shell.command(command)
tmp_log('executed command %s', command)
execution_time = time() - start_time
output = output.decode('utf-8', 'ignore')
title = "Deployment script %s" % ('failed'
if retval else 'succeeded')
error = retval > 0
notify_user(user,
title,
cloud_id=cloud_id,
machine_id=machine_id,
machine_name=node.name,
command=command,
output=output,
duration=execution_time,
retval=retval,
error=retval > 0)
log_event(action='deployment_script_finished',
error=retval > 0,
return_value=retval,
command=command,
stdout=output,
**log_dict)
shell.disconnect()
if monitoring:
try:
enable_monitoring(
user,
cloud_id,
node.id,
name=node.name,
dns_name=node.extra.get('dns_name', ''),
public_ips=ips,
no_ssh=False,
dry=False,
job_id=job_id,
plugins=plugins,
deploy_async=False,
)
except Exception as e:
print repr(e)
error = True
notify_user(
user,
"Enable monitoring failed for machine %s" % machine_id,
repr(e))
notify_admin(
'Enable monitoring on creation failed for user %s machine %s: %r'
% (email, machine_id, e))
log_event(action='enable_monitoring_failed',
error=repr(e),
**log_dict)
if post_script_id and multi_user:
tmp_log('will run post_script_id %s', post_script_id)
ret = run_script.run(
user.email,
post_script_id,
cloud_id,
machine_id,
params=post_script_params,
host=host,
job_id=job_id,
action_prefix='post_',
)
error = ret['error']
tmp_log('executed post_script_id %s', script_id)
log_event(action='post_deploy_finished', error=error, **log_dict)
except (ServiceUnavailableError, SSHException) as exc:
tmp_log(repr(exc))
raise self.retry(exc=exc, countdown=60, max_retries=15)
except Exception as exc:
tmp_log(repr(exc))
if str(exc).startswith('Retry'):
raise
notify_user(user,
"Deployment script failed for machine %s" % machine_id)
notify_admin(
"Deployment script failed for machine %s in cloud %s by user %s" %
(machine_id, cloud_id, email), repr(exc))
log_event(email=email,
event_type='job',
action='post_deploy_finished',
cloud_id=cloud_id,
machine_id=machine_id,
enable_monitoring=bool(monitoring),
command=command,
error="Couldn't connect to run post deploy steps.",
job_id=job_id)