def test_vrrp_check_script_update(self, mock_sock_path, mock_get_lbs,
mock_join, mock_listdir, mock_exists,
mock_makedirs, mock_get_listeners):
mock_get_lbs.return_value = ['abc', LB_ID1]
mock_sock_path.return_value = 'listener.sock'
mock_exists.side_effect = [False, False, True]
mock_get_lbs.side_effect = [['abc', LB_ID1], ['abc', LB_ID1], []]
mock_get_listeners.return_value = []
# Test the stop action path
cmd = 'haproxy-vrrp-check ' + ' '.join(['listener.sock']) + '; exit $?'
path = util.keepalived_dir()
m = self.useFixture(test_utils.OpenFixture(path)).mock_open
util.vrrp_check_script_update(LB_ID1, 'stop')
handle = m()
handle.write.assert_called_once_with(cmd)
# Test the start action path
cmd = ('haproxy-vrrp-check ' +
' '.join(['listener.sock', 'listener.sock']) + '; exit '
'$?')
m = self.useFixture(test_utils.OpenFixture(path)).mock_open
util.vrrp_check_script_update(LB_ID1, 'start')
handle = m()
handle.write.assert_called_once_with(cmd)
# Test the path with existing keepalived directory and no LBs
mock_makedirs.reset_mock()
cmd = 'exit 1'
m = self.useFixture(test_utils.OpenFixture(path)).mock_open
util.vrrp_check_script_update(LB_ID1, 'start')
handle = m()
handle.write.assert_called_once_with(cmd)
mock_makedirs.assert_has_calls([
mock.call(util.keepalived_dir(), exist_ok=True),
mock.call(util.keepalived_check_scripts_dir(), exist_ok=True)
])
def upload_lvs_listener_config(self, listener_id):
stream = loadbalancer.Wrapped(flask.request.stream)
NEED_CHECK = True
if not os.path.exists(util.keepalived_lvs_dir()):
os.makedirs(util.keepalived_lvs_dir())
if not os.path.exists(util.keepalived_backend_check_script_dir()):
current_file_dir, _ = os.path.split(os.path.abspath(__file__))
try:
script_dir = os.path.join(
os.path.abspath(os.path.join(current_file_dir, '../..')),
'utils')
assert True is os.path.exists(script_dir)
assert True is os.path.exists(
os.path.join(script_dir, CHECK_SCRIPT_NAME))
except Exception as e:
raise exceptions.Conflict(
description='%(file_name)s not Found for '
'UDP Listener %(listener_id)s' % {
'file_name': CHECK_SCRIPT_NAME,
'listener_id': listener_id
}) from e
os.makedirs(util.keepalived_backend_check_script_dir())
shutil.copy2(os.path.join(script_dir, CHECK_SCRIPT_NAME),
util.keepalived_backend_check_script_path())
os.chmod(util.keepalived_backend_check_script_path(), stat.S_IEXEC)
# Based on current topology setting, only the amphora instances in
# Active-Standby topology will create the directory below. So for
# Single topology, it should not create the directory and the check
# scripts for status change.
if (CONF.controller_worker.loadbalancer_topology !=
consts.TOPOLOGY_ACTIVE_STANDBY):
NEED_CHECK = False
conf_file = util.keepalived_lvs_cfg_path(listener_id)
flags = os.O_WRONLY | os.O_CREAT | os.O_TRUNC
# mode 00644
mode = stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH
with os.fdopen(os.open(conf_file, flags, mode), 'wb') as f:
b = stream.read(BUFFER)
while b:
f.write(b)
b = stream.read(BUFFER)
init_system = util.get_os_init_system()
file_path = util.keepalived_lvs_init_path(init_system, listener_id)
if init_system == consts.INIT_SYSTEMD:
template = SYSTEMD_TEMPLATE
# Render and install the network namespace systemd service
util.install_netns_systemd_service()
util.run_systemctl_command(consts.ENABLE,
consts.AMP_NETNS_SVC_PREFIX)
elif init_system == consts.INIT_UPSTART:
template = UPSTART_TEMPLATE
elif init_system == consts.INIT_SYSVINIT:
template = SYSVINIT_TEMPLATE
else:
raise util.UnknownInitError()
# Render and install the keepalivedlvs init script
if init_system == consts.INIT_SYSTEMD:
# mode 00644
mode = stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH
else:
# mode 00755
mode = (stat.S_IRWXU | stat.S_IRGRP | stat.S_IXGRP | stat.S_IROTH
| stat.S_IXOTH)
keepalived_pid, vrrp_pid, check_pid = util.keepalived_lvs_pids_path(
listener_id)
if not os.path.exists(file_path):
with os.fdopen(os.open(file_path, flags, mode), 'w') as text_file:
text = template.render(
keepalived_pid=keepalived_pid,
vrrp_pid=vrrp_pid,
check_pid=check_pid,
keepalived_cmd=consts.KEEPALIVED_CMD,
keepalived_cfg=util.keepalived_lvs_cfg_path(listener_id),
amphora_nsname=consts.AMPHORA_NAMESPACE,
amphora_netns=consts.AMP_NETNS_SVC_PREFIX,
administrative_log_facility=(
CONF.amphora_agent.administrative_log_facility),
)
text_file.write(text)
# Make sure the keepalivedlvs service is enabled on boot
if init_system == consts.INIT_SYSTEMD:
util.run_systemctl_command(
consts.ENABLE, "octavia-keepalivedlvs-%s" % str(listener_id))
elif init_system == consts.INIT_SYSVINIT:
init_enable_cmd = "insserv {file}".format(file=file_path)
try:
subprocess.check_output(init_enable_cmd.split(),
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
LOG.debug(
'Failed to enable '
'octavia-keepalivedlvs service: '
'%(err)s', {'err': str(e)})
return webob.Response(json=dict(
message="Error enabling "
"octavia-keepalivedlvs service",
details=e.output),
status=500)
if NEED_CHECK:
# inject the check script for keepalived process
script_path = os.path.join(util.keepalived_check_scripts_dir(),
KEEPALIVED_CHECK_SCRIPT_NAME)
if not os.path.exists(script_path):
if not os.path.exists(util.keepalived_check_scripts_dir()):
os.makedirs(util.keepalived_check_scripts_dir())
with os.fdopen(os.open(script_path, flags, stat.S_IEXEC),
'w') as script_file:
text = check_script_file_template.render(
consts=consts,
init_system=init_system,
keepalived_lvs_pid_dir=util.keepalived_lvs_dir())
script_file.write(text)
util.vrrp_check_script_update(None, consts.AMP_ACTION_START)
res = webob.Response(json={'message': 'OK'}, status=200)
res.headers['ETag'] = stream.get_md5()
return res
def upload_keepalived_config(self):
stream = loadbalancer.Wrapped(flask.request.stream)
if not os.path.exists(util.keepalived_dir()):
os.makedirs(util.keepalived_dir())
if not os.path.exists(util.keepalived_check_scripts_dir()):
os.makedirs(util.keepalived_check_scripts_dir())
conf_file = util.keepalived_cfg_path()
flags = os.O_WRONLY | os.O_CREAT | os.O_TRUNC
# mode 00644
mode = stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH
with os.fdopen(os.open(conf_file, flags, mode), 'wb') as f:
b = stream.read(BUFFER)
while b:
f.write(b)
b = stream.read(BUFFER)
init_system = util.get_os_init_system()
file_path = util.keepalived_init_path(init_system)
if init_system == consts.INIT_SYSTEMD:
template = SYSTEMD_TEMPLATE
init_enable_cmd = "systemctl enable octavia-keepalived"
# Render and install the network namespace systemd service
util.install_netns_systemd_service()
util.run_systemctl_command(consts.ENABLE,
consts.AMP_NETNS_SVC_PREFIX)
elif init_system == consts.INIT_UPSTART:
template = UPSTART_TEMPLATE
elif init_system == consts.INIT_SYSVINIT:
template = SYSVINIT_TEMPLATE
init_enable_cmd = "insserv {file}".format(file=file_path)
else:
raise util.UnknownInitError()
if init_system == consts.INIT_SYSTEMD:
# mode 00644
mode = stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH
else:
# mode 00755
mode = (stat.S_IRWXU | stat.S_IRGRP | stat.S_IXGRP | stat.S_IROTH
| stat.S_IXOTH)
if not os.path.exists(file_path):
with os.fdopen(os.open(file_path, flags, mode), 'w') as text_file:
text = template.render(
keepalived_pid=util.keepalived_pid_path(),
keepalived_cmd=consts.KEEPALIVED_CMD,
keepalived_cfg=util.keepalived_cfg_path(),
keepalived_log=util.keepalived_log_path(),
amphora_nsname=consts.AMPHORA_NAMESPACE,
amphora_netns=consts.AMP_NETNS_SVC_PREFIX,
administrative_log_facility=(
CONF.amphora_agent.administrative_log_facility),
)
text_file.write(text)
# Renders the Keepalived check script
keepalived_path = util.keepalived_check_script_path()
# mode 00755
mode = (stat.S_IRWXU | stat.S_IRGRP | stat.S_IXGRP | stat.S_IROTH
| stat.S_IXOTH)
open_obj = os.open(keepalived_path, flags, mode)
with os.fdopen(open_obj, 'w') as text_file:
text = check_script_template.render(
check_scripts_dir=util.keepalived_check_scripts_dir())
text_file.write(text)
# Configure the monitoring of haproxy
util.vrrp_check_script_update(None, consts.AMP_ACTION_START)
# Make sure the new service is enabled on boot
if init_system != consts.INIT_UPSTART:
try:
subprocess.check_output(init_enable_cmd.split(),
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
LOG.debug(
'Failed to enable octavia-keepalived service: '
'%(err)s %(output)s', {
'err': e,
'output': e.output
})
return webob.Response(json=dict(
message="Error enabling octavia-keepalived service",
details=e.output),
status=500)
res = webob.Response(json={'message': 'OK'}, status=200)
res.headers['ETag'] = stream.get_md5()
return res
def delete_lb(self, lb_id):
try:
self._check_lb_exists(lb_id)
except exceptions.HTTPException:
return webob.Response(json={'message': 'OK'})
# check if that haproxy is still running and if stop it
if os.path.exists(util.pid_path(lb_id)) and os.path.exists(
os.path.join('/proc', util.get_haproxy_pid(lb_id))):
cmd = "/usr/sbin/service haproxy-{0} stop".format(lb_id)
try:
subprocess.check_output(cmd.split(), stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
LOG.error("Failed to stop haproxy-%s service: %s %s", lb_id, e,
e.output)
return webob.Response(json=dict(
message="Error stopping haproxy", details=e.output),
status=500)
# parse config and delete stats socket
try:
stats_socket = util.parse_haproxy_file(lb_id)[0]
os.remove(stats_socket)
except Exception:
pass
# Since this script should be deleted at LB delete time
# we can check for this path to see if VRRP is enabled
# on this amphora and not write the file if VRRP is not in use
if os.path.exists(util.keepalived_check_script_path()):
util.vrrp_check_script_update(lb_id, action=consts.AMP_ACTION_STOP)
# delete the ssl files
try:
shutil.rmtree(self._cert_dir(lb_id))
except Exception:
pass
# disable the service
init_system = util.get_os_init_system()
init_path = util.init_path(lb_id, init_system)
if init_system == consts.INIT_SYSTEMD:
util.run_systemctl_command(consts.DISABLE,
"haproxy-{lb_id}".format(lb_id=lb_id))
elif init_system == consts.INIT_SYSVINIT:
init_disable_cmd = "insserv -r {file}".format(file=init_path)
elif init_system != consts.INIT_UPSTART:
raise util.UnknownInitError()
if init_system == consts.INIT_SYSVINIT:
try:
subprocess.check_output(init_disable_cmd.split(),
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
LOG.error(
"Failed to disable haproxy-%(lb_id)s service: "
"%(err)s %(out)s", {
'lb_id': lb_id,
'err': e,
'out': e.output
})
return webob.Response(json=dict(
message="Error disabling haproxy-{0} service".format(
lb_id),
details=e.output),
status=500)
# delete the directory + init script for that listener
shutil.rmtree(util.haproxy_dir(lb_id))
if os.path.exists(init_path):
os.remove(init_path)
return webob.Response(json={'message': 'OK'})
def start_stop_lb(self, lb_id, action):
action = action.lower()
if action not in [
consts.AMP_ACTION_START, consts.AMP_ACTION_STOP,
consts.AMP_ACTION_RELOAD
]:
return webob.Response(json=dict(
message='Invalid Request',
details="Unknown action: {0}".format(action)),
status=400)
self._check_lb_exists(lb_id)
is_vrrp = (CONF.controller_worker.loadbalancer_topology ==
consts.TOPOLOGY_ACTIVE_STANDBY)
if is_vrrp:
util.vrrp_check_script_update(lb_id, action)
# HAProxy does not start the process when given a reload
# so start it if haproxy is not already running
if action == consts.AMP_ACTION_RELOAD:
if consts.OFFLINE == self._check_haproxy_status(lb_id):
action = consts.AMP_ACTION_START
cmd = ("/usr/sbin/service haproxy-{lb_id} {action}".format(
lb_id=lb_id, action=action))
try:
subprocess.check_output(cmd.split(), stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
if b'Job is already running' not in e.output:
LOG.debug(
"Failed to %(action)s haproxy-%(lb_id)s service: %(err)s "
"%(out)s", {
'action': action,
'lb_id': lb_id,
'err': e,
'out': e.output
})
return webob.Response(json=dict(
message="Error {0}ing haproxy".format(action),
details=e.output),
status=500)
# If we are not in active/standby we need to send an IP
# advertisement (GARP or NA). Keepalived handles this for
# active/standby load balancers.
if not is_vrrp and action in [
consts.AMP_ACTION_START, consts.AMP_ACTION_RELOAD
]:
util.send_vip_advertisements(lb_id)
if action in [consts.AMP_ACTION_STOP, consts.AMP_ACTION_RELOAD]:
return webob.Response(json=dict(
message='OK',
details='Listener {lb_id} {action}ed'.format(lb_id=lb_id,
action=action)),
status=202)
details = ('Configuration file is valid\n'
'haproxy daemon for {0} started'.format(lb_id))
return webob.Response(json=dict(message='OK', details=details),
status=202)