def _check_udp_listener_status(self, listener_id):
if os.path.exists(util.keepalived_lvs_pids_path(listener_id)[0]):
if os.path.exists(os.path.join(
'/proc', util.get_keepalivedlvs_pid(listener_id))):
# Check if the listener is disabled
with open(util.keepalived_lvs_cfg_path(listener_id),
'r') as file:
cfg = file.read()
m = re.search('virtual_server', cfg)
if m:
return consts.ACTIVE
return consts.OFFLINE
return consts.ERROR
return consts.OFFLINE
def _check_udp_listener_status(self, listener_id):
if os.path.exists(util.keepalived_lvs_pids_path(listener_id)[0]):
if os.path.exists(os.path.join(
'/proc', util.get_keepalivedlvs_pid(listener_id))):
# Check if the listener is disabled
with open(util.keepalived_lvs_cfg_path(listener_id),
'r') as file:
cfg = file.read()
m = re.search('virtual_server', cfg)
if m:
return consts.ACTIVE
return consts.OFFLINE
return consts.ERROR
return consts.OFFLINE
def test_keepalived_lvs_pids_path(self):
fake_path = '/fake/path'
self.CONF.config(group="haproxy_amphora", base_path=fake_path)
pid_path = (fake_path + '/' + 'lvs/octavia-keepalivedlvs-' +
self.listener_id + '.' + 'pid')
vrrp_pid_path = (fake_path + '/' + 'lvs/octavia-keepalivedlvs-' +
self.listener_id + '.' + 'vrrp.pid')
check_pid_path = (fake_path + '/' + 'lvs/octavia-keepalivedlvs-' +
self.listener_id + '.' + 'check.pid')
result1, result2, result3 = util.keepalived_lvs_pids_path(
self.listener_id)
self.assertEqual(pid_path, result1)
self.assertEqual(vrrp_pid_path, result2)
self.assertEqual(check_pid_path, result3)
def test_keepalived_lvs_pids_path(self):
fake_path = '/fake/path'
self.CONF.config(group="haproxy_amphora", base_path=fake_path)
pid_path = (fake_path + '/' + 'lvs/octavia-keepalivedlvs-' +
self.listener_id + '.' + 'pid')
vrrp_pid_path = (fake_path + '/' + 'lvs/octavia-keepalivedlvs-' +
self.listener_id + '.' + 'vrrp.pid')
check_pid_path = (fake_path + '/' + 'lvs/octavia-keepalivedlvs-' +
self.listener_id + '.' + 'check.pid')
result1, result2, result3 = util.keepalived_lvs_pids_path(
self.listener_id)
self.assertEqual(pid_path, result1)
self.assertEqual(vrrp_pid_path, result2)
self.assertEqual(check_pid_path, result3)
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 delete_lvs_listener(self, listener_id):
try:
self._check_lvs_listener_exists(listener_id)
except exceptions.HTTPException:
return webob.Response(json={'message': 'OK'})
# check if that keepalived is still running and if stop it
keepalived_pid, vrrp_pid, check_pid = util.keepalived_lvs_pids_path(
listener_id)
if os.path.exists(keepalived_pid) and os.path.exists(
os.path.join('/proc',
util.get_keepalivedlvs_pid(listener_id))):
cmd = ("/usr/sbin/service "
"octavia-keepalivedlvs-{0} stop".format(listener_id))
try:
subprocess.check_output(cmd.split(), stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
LOG.error("Failed to stop keepalivedlvs service: %s", str(e))
return webob.Response(json=dict(
message="Error stopping keepalivedlvs", details=e.output),
status=500)
# Since the lvs check script based on the keepalived pid file for
# checking whether it is alived. So here, we had stop the keepalived
# process by the previous step, must make sure the pid files are not
# exist.
if (os.path.exists(keepalived_pid) or os.path.exists(vrrp_pid)
or os.path.exists(check_pid)):
for pid in [keepalived_pid, vrrp_pid, check_pid]:
os.remove(pid)
# disable the service
init_system = util.get_os_init_system()
init_path = util.keepalived_lvs_init_path(init_system, listener_id)
if init_system == consts.INIT_SYSTEMD:
util.run_systemctl_command(
consts.DISABLE, "octavia-keepalivedlvs-%s" % str(listener_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 "
"octavia-keepalivedlvs-%(list)s service: "
"%(err)s", {
'list': listener_id,
'err': str(e)
})
return webob.Response(json=dict(
message=("Error disabling octavia-keepalivedlvs-"
"{0} service".format(listener_id)),
details=e.output),
status=500)
# delete init script ,config file and log file for that listener
if os.path.exists(init_path):
os.remove(init_path)
if os.path.exists(util.keepalived_lvs_cfg_path(listener_id)):
os.remove(util.keepalived_lvs_cfg_path(listener_id))
return webob.Response(json={'message': 'OK'})
def get_lvs_listener_pool_status(listener_id):
(resource_ipport_mapping,
ns_name) = get_lvs_listener_resource_ipports_nsname(listener_id)
if 'Pool' not in resource_ipport_mapping:
return {}
if 'Members' not in resource_ipport_mapping:
return {
'lvs': {
'uuid': resource_ipport_mapping['Pool']['id'],
'status': constants.UP,
'members': {}
}
}
config_path = util.keepalived_lvs_cfg_path(listener_id)
pids_pathes = util.keepalived_lvs_pids_path(listener_id)
config_stat = os.stat(config_path)
check_pid_stat = os.stat(pids_pathes[2])
# Indicates that keepalived configuration has been updated but the service
# has yet to be restarted.
# NOTE: It only works if we are doing a RESTART on configuration change,
# Iaa34db6cb1dfed98e96a585c5d105e263c7efa65 forces a RESTART instead of a
# RELOAD, we need to be careful if we want to switch back to RELOAD after
# updating to a recent keepalived release.
restarting = config_stat.st_mtime > check_pid_stat.st_mtime
with open(util.keepalived_lvs_cfg_path(listener_id), 'r') as f:
cfg = f.read()
hm_enabled = len(CHECKER_REGEX.findall(cfg)) > 0
_, realserver_result = get_listener_realserver_mapping(
ns_name, resource_ipport_mapping['Listener']['ipport'], hm_enabled)
pool_status = constants.UP
member_results = {}
if realserver_result:
member_ip_port_list = [
member['ipport'] for member in resource_ipport_mapping['Members']
]
down_member_ip_port_set = set(member_ip_port_list) - set(
list(realserver_result.keys()))
for member_ip_port in member_ip_port_list:
member_id = None
for member in resource_ipport_mapping['Members']:
if member['ipport'] == member_ip_port:
member_id = member['id']
if member_ip_port is None:
status = constants.MAINT
elif member_ip_port in down_member_ip_port_set:
status = (constants.RESTARTING
if restarting else constants.DOWN)
elif int(realserver_result[member_ip_port]['Weight']) == 0:
status = constants.DRAIN
else:
status = realserver_result[member_ip_port]['status']
if member_id:
member_results[member_id] = status
else:
if hm_enabled:
pool_status = constants.DOWN
for member in resource_ipport_mapping['Members']:
if member['ipport'] is None:
member_results[member['id']] = constants.MAINT
elif hm_enabled:
member_results[member['id']] = (constants.RESTARTING if
restarting else constants.DOWN)
else:
member_results[member['id']] = constants.NO_CHECK
return {
'lvs': {
'uuid': resource_ipport_mapping['Pool']['id'],
'status': pool_status,
'members': member_results
}
}
def upload_udp_listener_config(self, listener_id):
stream = listener.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:
raise exceptions.Conflict(
description='%(file_name)s not Found for '
'UDP Listener %(listener_id)s' %
{'file_name': CHECK_SCRIPT_NAME,
'listener_id': listener_id})
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 not os.path.exists(util.keepalived_check_scripts_dir()):
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
)
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': 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):
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)
res = webob.Response(json={'message': 'OK'}, status=200)
res.headers['ETag'] = stream.get_md5()
return res
def delete_udp_listener(self, listener_id):
try:
self._check_udp_listener_exists(listener_id)
except exceptions.HTTPException:
return webob.Response(json={'message': 'OK'})
# check if that keepalived is still running and if stop it
keepalived_pid, vrrp_pid, check_pid = util.keepalived_lvs_pids_path(
listener_id)
if os.path.exists(keepalived_pid) and os.path.exists(
os.path.join('/proc',
util.get_keepalivedlvs_pid(listener_id))):
cmd = ("/usr/sbin/service "
"octavia-keepalivedlvs-{0} stop".format(listener_id))
try:
subprocess.check_output(cmd.split(), stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
LOG.error("Failed to stop keepalivedlvs service: %s", e)
return webob.Response(json=dict(
message="Error stopping keepalivedlvs",
details=e.output), status=500)
# Since the lvs check script based on the keepalived pid file for
# checking whether it is alived. So here, we had stop the keepalived
# process by the previous step, must make sure the pid files are not
# exist.
if (os.path.exists(keepalived_pid) or
os.path.exists(vrrp_pid) or os.path.exists(check_pid)):
for pid in [keepalived_pid, vrrp_pid, check_pid]:
os.remove(pid)
# disable the service
init_system = util.get_os_init_system()
init_path = util.keepalived_lvs_init_path(init_system, listener_id)
if init_system == consts.INIT_SYSTEMD:
util.run_systemctl_command(
consts.DISABLE, "octavia-keepalivedlvs-%s" % str(listener_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 "
"octavia-keepalivedlvs-%(list)s service: "
"%(err)s", {'list': listener_id, 'err': e})
return webob.Response(json=dict(
message=(
"Error disabling octavia-keepalivedlvs-"
"{0} service".format(listener_id)),
details=e.output), status=500)
# delete init script ,config file and log file for that listener
if os.path.exists(init_path):
os.remove(init_path)
if os.path.exists(util.keepalived_lvs_cfg_path(listener_id)):
os.remove(util.keepalived_lvs_cfg_path(listener_id))
return webob.Response(json={'message': 'OK'})
