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How to use list_routers_on_l3_agent method in tempest

Best Python code snippet using tempest_python

neutron-ha-tool.py

Source:neutron-ha-tool.py

...133        LOG.info("No rebalancing required for 1 or fewer agents")134        return135    for l3_agent in agents:136        l3_agent_dict[l3_agent['id']] = \137            list_routers_on_l3_agent(qclient, l3_agent['id'])138    ordered_l3_agent_dict = OrderedDict(sorted(l3_agent_dict.items(),139                                               key=lambda t: len(t[0])))140    ordered_l3_agent_list = list(ordered_l3_agent_dict)141    num_agents = len(ordered_l3_agent_list)142    LOG.info("Agent list: %s", ordered_l3_agent_list[0:(num_agents-1/2)+1])143    i = 0144    for agent in ordered_l3_agent_list[0:num_agents-1/2]:145        low_agent_id = ordered_l3_agent_list[i]146        hgh_agent_id = ordered_l3_agent_list[-(i+1)]147        # do nothing if we end up comparing the same router148        if low_agent_id == hgh_agent_id:149            continue150        LOG.info("Examining low_agent=%s, high_agent=%s",151                 low_agent_id, hgh_agent_id)152        low_agent_router_count = len(l3_agent_dict[low_agent_id])153        hgh_agent_router_count = len(l3_agent_dict[hgh_agent_id])154        LOG.info("Low Count=%s, High Count=%s",155                 low_agent_router_count, hgh_agent_router_count)156        for router_id in l3_agent_dict[hgh_agent_id]:157            if low_agent_router_count >= hgh_agent_router_count:158                break159            else:160                LOG.info("Migrating router=%s from agent=%s to agent=%s",161                         router_id, hgh_agent_id, low_agent_id)162                try:163                    if not noop:164                        migrate_router(qclient, router_id, hgh_agent_id,165                                       low_agent_id)166                    low_agent_router_count += 1167                    hgh_agent_router_count -= 1168                except:169                    LOG.exception("Failed to migrate router=%s from agent=%s "170                                  "to agent=%s", router_id, hgh_agent_id,171                                  low_agent_id)172                    continue173        i += 1174def l3_agent_check(qclient):175    """176    Walk the l3 agents searching for agents that are offline.  Show routers177    that are offline and where we would migrate them to.178    :param qclient: A neutronclient179    """180    migration_count = 0181    agent_list = list_agents(qclient)182    agent_dead_list = agent_dead_id_list(agent_list, 'L3 agent')183    agent_alive_list = agent_alive_id_list(agent_list, 'L3 agent')184    LOG.info("There are %s offline L3 agents and %s online L3 agents",185             len(agent_dead_list), len(agent_alive_list))186    if len(agent_dead_list) > 0:187        for agent_id in agent_dead_list:188            LOG.info("Querying agent_id=%s for routers to migrate", agent_id)189            router_id_list = list_routers_on_l3_agent(qclient, agent_id)190            for router_id in router_id_list:191                try:192                    target_id = random.choice(agent_alive_list)193                except IndexError:194                    LOG.warn("There are no l3 agents alive we could "195                             "migrate routers onto.")196                    target_id = None197                migration_count += 1198                LOG.warn("Would like to migrate router=%s to agent=%s",199                         router_id, target_id)200        if migration_count > 0:201            sys.exit(2)202def l3_agent_migrate(qclient, noop=False, now=False):203    """204    Walk the l3 agents searching for agents that are offline.  For those that205    are offline, we will retrieve a list of routers on them and migrate them to206    a random l3 agent that is online.207    :param qclient: A neutronclient208    :param noop: Optional noop flag209    :param now: Optional. If false (the default), we'll wait for a random210                amount of time (between 30 and 60 seconds) before migration. If211                true, routers are migrated immediately.212    """213    migration_count = 0214    agent_list = list_agents(qclient)215    agent_dead_list = agent_dead_id_list(agent_list, 'L3 agent')216    agent_alive_list = agent_alive_id_list(agent_list, 'L3 agent')217    LOG.info("There are %s offline L3 agents and %s online L3 agents",218             len(agent_dead_list), len(agent_alive_list))219    if len(agent_dead_list) > 0:220        if len(agent_alive_list) < 1:221            LOG.exception("There are no l3 agents alive to migrate "222                          "routers onto")223        timeout = 0224        if not now:225            while timeout < TAKEOVER_DELAY:226                agent_list_new = list_agents(qclient)227                agent_dead_list_new = agent_dead_id_list(agent_list_new,228                                                         'L3 agent')229                if len(agent_dead_list_new) < len(agent_dead_list):230                    LOG.info("Skipping router failover since an agent came "231                             "online while ensuring agents offline for %s "232                             "seconds", TAKEOVER_DELAY)233                    sys.exit(0)234                LOG.info("Agent found offline for seconds=%s but waiting "235                         "seconds=%s before migration",236                         timeout, TAKEOVER_DELAY)237                timeout += 1238                time.sleep(1)239        for agent_id in agent_dead_list:240            LOG.info("Querying agent_id=%s for routers to migrate", agent_id)241            router_id_list = list_routers_on_l3_agent(qclient, agent_id)242            for router_id in router_id_list:243                target_id = random.choice(agent_alive_list)244                LOG.info("Migrating router=%s to agent=%s",245                         router_id, target_id)246                try:247                    if not noop:248                        migrate_router(qclient, router_id, agent_id, target_id)249                        migration_count += 1250                except:251                    LOG.exception("There was an error migrating a router")252                    continue253        LOG.info("%s routers required migration from offline L3 agents",254                 migration_count)255def replicate_dhcp(qclient, noop=False):256    """257    Retrieve a network list and then probe each DHCP agent to ensure258    they have that network assigned.259    :param qclient: A neutronclient260    :param noop: Optional noop flag261    """262    added = 0263    networks = list_networks(qclient)264    network_id_list = [n['id'] for n in networks]265    agents = list_agents(qclient, agent_type='DHCP agent')266    LOG.info("Replicating %s networks to %s DHCP agents", len(networks),267             len(agents))268    for dhcp_agent_id in [a['id'] for a in agents]:269        networks_on_agent = \270            qclient.list_networks_on_dhcp_agent(dhcp_agent_id)['networks']271        network_id_on_agent = [n['id'] for n in networks_on_agent]272        for network_id in network_id_list:273            if network_id not in network_id_on_agent:274                try:275                    dhcp_body = {'network_id': network_id}276                    if not noop:277                        qclient.add_network_to_dhcp_agent(dhcp_agent_id,278                                                          dhcp_body)279                    LOG.info("Added missing network=%s to dhcp agent=%s",280                             network_id, dhcp_agent_id)281                    added += 1282                except:283                    LOG.exception("Failed to add network_id=%s to"284                                  "dhcp_agent=%s", network_id, dhcp_agent_id)285                    continue286    LOG.info("Added %s networks to DHCP agents", added)287def migrate_router(qclient, router_id, agent_id, target_id):288    """289    Returns nothing, and raises on exception290    :param qclient: A neutronclient291    :param router_id: The id of the router to migrate292    :param agent_id: The id of the l3 agent to migrate from293    :param target_id: The id of the l3 agent to migrate to294    """295    # N.B. The neutron API will return "success" even when there is a296    # subsequent failure during the add or remove process so we must check to297    # ensure the router has been added or removed298    # remove the router from the dead agent299    qclient.remove_router_from_l3_agent(agent_id, router_id)300    # ensure it is removed or log an error301    if router_id in list_routers_on_l3_agent(qclient, agent_id):302        LOG.exception("Failed to remove router_id=%s from agent_id=%s",303                      router_id, agent_id)304    # add the router id to a live agent305    router_body = {'router_id': router_id}306    qclient.add_router_to_l3_agent(target_id, router_body)307    # ensure it is removed or log an error308    if router_id not in list_routers_on_l3_agent(qclient, target_id):309        LOG.exception("Failed to add router_id=%s from agent_id=%s",310                      router_id, agent_id)311def list_networks(qclient):312    """313    Return a list of network objects314    :param qclient: A neutronclient315    """316    resp = qclient.list_networks()317    LOG.debug("list_networks: %s", resp)318    return resp['networks']319def list_dhcp_agent_networks(qclient, agent_id):320    """321    Return a list of network ids assigned to a particular DHCP agent322    :param qclient: A neutronclient323    :param agent_id: A DHCP agent id324    """325    resp = qclient.list_networks_on_dhcp_agent(agent_id)326    LOG.debug("list_networks_on_dhcp_agent: %s", resp)327    return [s['id'] for s in resp['networks']]328def list_routers(qclient):329    """330    Return a list of router objects331    :param qclient: A neutronclient332    # {'routers': [333    #    {u'status': u'ACTIVE',334    #     u'external_gateway_info':335    #        {u'network_id': u'b970297c-d80e-4527-86d7-e49d2da9fdef'},336    #     u'name': u'router1',337    #     u'admin_state_up': True,338    #     u'tenant_id': u'5603b97ee7f047ea999e25492c7fcb23',339    #     u'routes': [],340    #     u'id': u'0a122e5c-1623-412e-8c53-a1e21d1daff8'}341    # ]}342    """343    resp = qclient.list_routers()344    LOG.debug("list_routers: %s", resp)345    return resp['routers']346def list_routers_on_l3_agent(qclient, agent_id):347    """348    Return a list of router ids on an agent349    :param qclient: A neutronclient350    """351    resp = qclient.list_routers_on_l3_agent(agent_id)352    LOG.debug("list_routers_on_l3_agent: %s", resp)353    return [r['id'] for r in resp['routers']]354def list_agents(qclient, agent_type=None):355    """Return a list of agent objects356    :param qclient: A neutronclient357    # {u'agents': [358    #   {u'binary': u'neutron-openvswitch-agent',359    #    u'description': None,360    #    u'admin_state_up': True,361    #    u'heartbeat_timestamp': u'2013-07-02 22:20:25',362    #    u'alive': True,363    #    u'topic': u'N/A',364    #    u'host': u'o3r3.int.san3.attcompute.com',365    #    u'agent_type': u'Open vSwitch agent',...

quantum-ha-tool.py

Source:quantum-ha-tool.py

...95        LOG.info("No rebalancing required for 1 or fewer agents")96        return97    for l3_agent in agents:98        num_routers=l3_agent['configurations']['routers']99        l3_agent_dict[l3_agent['id']] = list_routers_on_l3_agent(qclient, l3_agent['id'])100    ordered_l3_agent_dict = OrderedDict(sorted(l3_agent_dict.items(), key=lambda t: len(t[0])))101    ordered_l3_agent_list = list(ordered_l3_agent_dict)102    num_agents = len(ordered_l3_agent_list)103    LOG.info("Agent list: %s", ordered_l3_agent_list[0:(num_agents-1/2)+1])104    i=0105    for agent in ordered_l3_agent_list[0:num_agents-1/2]:106        low_agent_id=ordered_l3_agent_list[i]107        hgh_agent_id=ordered_l3_agent_list[-(i+1)]108        # do nothing if we end up comparing the same router109        if low_agent_id == hgh_agent_id:110            continue111        LOG.info("Examining low_agent=%s, high_agent=%s", low_agent_id, hgh_agent_id)112        low_agent_router_count = len(l3_agent_dict[low_agent_id])113        hgh_agent_router_count = len(l3_agent_dict[hgh_agent_id])114        LOG.info("Low Count=%s, High Count=%s", low_agent_router_count, hgh_agent_router_count)115        for router_id in l3_agent_dict[hgh_agent_id]:116            if low_agent_router_count >= hgh_agent_router_count:117                break118            else:119                LOG.info("Migrating router=%s from agent=%s to agent=%s", router_id, hgh_agent_id, low_agent_id)120                try:121                    if not noop:122                        migrate_router(qclient, router_id, hgh_agent_id, low_agent_id)123                    low_agent_router_count += 1124                    hgh_agent_router_count -= 1125                except:126                    LOG.traceback("Failed to migrate router=%s from agent=%s to agent=%s" % (router_id, hgh_agent_id, low_agent_id))127                    continue128        i+=1129def l3_agent_check(qclient, noop=False):130    """131    Walk the l3 agents searching for agents that are offline.  Show routers132    that are offline and where we would migrate them too.133    :param qclient: A quantumclient134    :param noop: Optional noop flag135    """136    migration_count = 0137    agent_list = list_agents(qclient)138    agent_dead_list = agent_dead_id_list(agent_list, 'L3 agent')139    agent_alive_list = agent_alive_id_list(agent_list, 'L3 agent')140    LOG.info("There are %s offline L3 agents and %s online L3 agents", len(agent_dead_list), len(agent_alive_list))141    if len(agent_dead_list) > 0:142       for agent_id in agent_dead_list:143           LOG.info("Querying agent_id=%s for routers to migrate", agent_id)144           router_id_list = list_routers_on_l3_agent(qclient, agent_id)145           for router_id in router_id_list:146               try:147                   target_id = choice(agent_alive_list)148               except:149                   LOG.warn("There are no l3 agents alive we could migrate routers onto")150                   target_id = None151               LOG.info("Would like to migrate router=%s to agent=%s", router_id, target_id)152def l3_agent_migrate(qclient, noop=False):153    """154    Walk the l3 agents searching for agents that are offline.  For those that are155    offline, we will retrieve a list of routers on them and migrate them to a156    random l3 agent that is online.157    :param qclient: A quantumclient158    :param noop: Optional noop flag159    """160    migration_count = 0161    agent_list = list_agents(qclient)162    agent_dead_list = agent_dead_id_list(agent_list, 'L3 agent')163    agent_alive_list = agent_alive_id_list(agent_list, 'L3 agent')164    LOG.info("There are %s offline L3 agents and %s online L3 agents", len(agent_dead_list), len(agent_alive_list))165    if len(agent_dead_list) > 0:166       if len(agent_alive_list) < 1:167           LOG.exception("There are no l3 agents alive to migrate routers onto")168       for agent_id in agent_dead_list:169           LOG.info("Querying agent_id=%s for routers to migrate", agent_id)170           router_id_list = list_routers_on_l3_agent(qclient, agent_id)171           for router_id in router_id_list:172               target_id = choice(agent_alive_list)173               LOG.info("Migrating router=%s to agent=%s", router_id, target_id)174               router_body = {'router_id': router_id}175               try:176                   if not noop:177                       migrate_router(qclient, router_id, agent_id, target_id)178                   migration_count+=1179               except:180                   LOG.exception("There was an error migrating a router")181                   continue182       LOG.info("%s routers required migration from offline L3 agents", migration_count)183def replicate_dhcp(qclient, noop=False):184    """185    Retrieve a network list and then probe each DHCP agent to ensure they have that186    network assigned.187    :param qclient: A quantumclient188    :param noop: Optional noop flag189    """190    added=0191    networks = list_networks(qclient)192    network_id_list = [n['id'] for n in networks]193    agents = list_agents(qclient, agent_type='DHCP agent')194    LOG.info("Replicating %s networks to %s DHCP agents", len(networks), len(agents))195    for dhcp_agent_id in [a['id'] for a in agents]:196       networks_on_agent = qclient.list_networks_on_dhcp_agent(dhcp_agent_id)['networks']197       network_id_on_agent = [n['id'] for n in networks_on_agent]198       for network_id in network_id_list:199           if network_id not in network_id_on_agent:200               try:201                   dhcp_body = {'network_id': network_id}202                   if not noop:203                       qclient.add_network_to_dhcp_agent(dhcp_agent_id, dhcp_body)204                   LOG.info("Added missing network=%s to dhcp agent=%s", network_id, dhcp_agent_id)205                   added+=1206               except:207                   LOG.exception("Failed to add network_id=%s to dhcp_agent=%s", network_id, dhcp_agent_id)208                   continue209    LOG.info("Added %s networks to DHCP agents", added)210def migrate_router(qclient, router_id, agent_id, target_id):211    """212    Returns nothing, and raises on exception213    :param qclient: A quantumclient214    :param router_id: The id of the router to migrate215    :param agent_id: The id of the l3 agent to migrate from216    :param target_id: The id of the l3 agent to migrate to217    """218    # N.B. The quantum API will return "success" even when there is a subsequent219    # failure during the add or remove process so we must check to ensure the220    # router has been added or removed221    # remove the router from the dead agent222    qclient.remove_router_from_l3_agent(agent_id, router_id)223    # ensure it is removed or log an error224    if router_id in list_routers_on_l3_agent(qclient, agent_id):225       LOG.exception("Failed to remove router_id=%s from agent_id=%s", router_id, agent_id)226    # add the router id to a live agent227    router_body = {'router_id': router_id}228    qclient.add_router_to_l3_agent(target_id, router_body)229    # ensure it is removed or log an error230    if router_id not in list_routers_on_l3_agent(qclient, target_id):231       LOG.exception("Failed to add router_id=%s from agent_id=%s", router_id, agent_id)232def list_networks(qclient):233    """234    Return a list of network objects235    :param qclient: A quantumclient236    """237    resp = qclient.list_networks()238    LOG.debug("list_networks: %s", resp)239    return resp['networks']240def list_dhcp_agent_networks(qclient, agent_id):241    """242    Return a list of network ids assigned to a particular DHCP agent243    :param qclient: A quantumclient244    :param agent_id: A DHCP agent id245    """246    resp = qclient.list_networks_on_dhcp_agent(agent_id)247    LOG.debug("list_networks_on_dhcp_agent: %s", resp)248    return [s['id'] for s in resp['networks']]249def list_routers(qclient):250    """251    Return a list of router objects252    :param qclient: A quantumclient253    # {'routers': [{u'status': u'ACTIVE', u'external_gateway_info': {u'network_id': u'b970297c-d80e-4527-86d7-e49d2da9fdef'}, u'name': u'router1',254    # u'admin_state_up': True, u'tenant_id': u'5603b97ee7f047ea999e25492c7fcb23', u'routes': [], u'id': u'0a122e5c-1623-412e-8c53-a1e21d1daff8'},255    """256    resp = qclient.list_routers()257    LOG.debug("list_routers: %s", resp)258    return resp['routers']259def list_routers_on_l3_agent(qclient, agent_id):260    """261    Return a list of router ids on an agent262    :param qclient: A quantumclient263    """264    resp = qclient.list_routers_on_l3_agent(agent_id)265    LOG.debug("list_routers_on_l3_agent: %s", resp)266    return [r['id'] for r in resp['routers']]267def list_agents(qclient, agent_type=None):268    """269    Return a list of agent objects270    :param qclient: A quantumclient271    # openvswitch272    #273    # {u'agents': [{u'binary': u'quantum-openvswitch-agent', u'description': None, u'admin_state_up': True, u'heartbeat_timestamp': u'2013-07-02 22:20:25'274    # u'alive': True, u'topic': u'N/A', u'host': u'o3r3.int.san3.attcompute.com', u'agent_type': u'Open vSwitch agent', u'created_at': u'2013-07-02 14:50:57',275    # u'started_at': u'2013-07-02 14:50:57', u'id': u'3a577f1d-d86e-4f1a-a395-8d4c8e4df1e2', u'configurations': {u'devices': 10}},276    #277    # dhcp278    #...

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