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'})