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F5 Integration for OpenStack Neutron LBaaS - Troubleshooting

Important

If you can’t find objects you created using the F5 Integration for OpenStack Neutron LBaaS on your BIG-IP device, check your partition. By default, the F5 Agent for OpenStack Neutron creates all objects in a partition named with the environment prefix (default is Project_) and the OpenStack tenant ID.

Example: Project_9572afc14db14c8a806d8c8219446e7b

Set the Logging Level to DEBUG

To troubleshoot general problems, set the Neutron and F5 agent debug setting to True. This creates extensive logs in /var/log/neutron/neutron-server.log and /var/log/neutron/f5-openstack-agent.log, respectively.

  1. Set the DEBUG log level output for Neutron:

    sudo vi /etc/neutron/neutron.conf
    [DEFAULT]
    ...
    # Print debugging output (set logging level to DEBUG instead of default WARNING level).
    debug = True
    
  2. Set the DEBUG log level output for F5 agent.

    sudo vi /etc/neutron/services/f5/f5-openstack-agent.ini
    #
    [DEFAULT]
    # Show debugging output in log (sets DEBUG log level output).
    debug = True
    ...
    

What to do if the F5 Agent for OpenStack Neutron isn’t running

Check the agent list in the OpenStack Horizon dashboard, or run neutron agent-list on the Neutron controller (or any other host where you installed F5 agent).

If f5-openstack-agent, or f5-oslbaasv2-agent, doesn’t appear in the agent list the F5 agent isn’t running.

Here are a few things you can try:

  • Check the logs for error messages.

    grep "ERROR" /var/log/neutron/f5-openstack-agent.log
    
  • Check the status of the f5-openstack-agent service.

    sudo systemctl status f5-openstack-agent.service \\ CENTOS
    sudo service f5-oslbaasv2-agent status           \\ UBUNTU
    
  • Make sure you can connect to the BIG-IP

    ssh admin@<big-ip_mgmt_ip>
    

    and verify that the following entries in the F5 agent configuration file are correct:

    • iControl hostname (can be a DNS-recognized hostname or the BIG-IP device’s management IP address)
    • username (account must have permission to manage LTM objects in the OpenStack tenant’s partition; see )
    • password
  • When using Global Routed Mode:

    Comment out (#) the vtep lines (shown below) in the F5 agent configuration file.

    #
    #f5_vtep_folder = 'Common'
    #f5_vtep_selfip_name = 'vtep'
    #
    
  • When using L2/L3 segmentation mode:

    Verify that the advertised_tunnel_types setting in the F5 agent configuration file matches the Neutron network’s provider:network_type. If the settings don’t match, check your network configurations and make corrections as needed.

    neutron net-show <network_name>
    +---------------------------+--------------------------------------+
    | Field                     | Value                                |
    +---------------------------+--------------------------------------+
    | admin_state_up            | True                                 |
    | id                        | 05f61e74-37e0-4c30-a664-762dfef1a221 |
    | mtu                       | 0                                    |
    | name                      | bigip_external                       |
    | provider:network_type     | vxlan                                |
    | provider:physical_network |                                      |
    | provider:segmentation_id  | 84                                   |
    | router:external           | False                                |
    | shared                    | False                                |
    | status                    | ACTIVE                               |
    | subnets                   |                                      |
    | tenant_id                 | 1a35d6558b59423e83f4500f1ebc1cec     |
    +---------------------------+--------------------------------------+
    

F5 Agent for OpenStack Neutron does not handle LBaaS requests correctly

Verify that you only have one agent running per environment, per host

If you see more than one entry for f5-openstack-agent or f5-oslbaasv2-agent, and you haven’t configured your host to use multiple agents, deactivate one of them.

The commands below may help you to identify which agent to deactivate.

neutron agent-list                                     \\ list all running agents
neutron agent-show <agent_id>                          \\ show the details for a specific agent
neutron lbaas-loadbalancer-list-on-agent <agent_id>    \\ list the loadbalancers on the agent.
neutron lbaas-loadbalancer-show <loadbalancer_id>      \\ show the details for a specific load balancer

Make sure you’re not running LBaaSv1 and LBaaSv2 at the same time

  1. Remove the entry for the lbaasv1 plugin from the Neutron configuration file (/etc/neutron/neutron.conf), if it exists.

    service_plugins = router,neutron_lbaas.services.loadbalancer.plugin.LoadBalancerPluginv2 \\ CORRECT
    
    service_plugins = router,lbaas,lbaasv2    \\ INCORRECT
    
  2. Remove or comment out (#) the entry for the F5 LBaaSv1 service provider driver in the Neutron LBaaS configuration file (/etc/neutron/neutron_lbaas.conf).

    [service_providers]
    service_provider = LOADBALANCERV2:F5Networks:neutron_lbaas.drivers.f5.driver_v2.F5LBaaSV2Driver:default
    # Must be in form:
    # service_provider = <service_type>:<name>:<driver>[:default]
    # List of allowed service types includes LOADBALANCER
    # Combination of <service type> and <name> must be unique; <driver> must also be unique
    # This is multiline option
    # service_provider = LOADBALANCER:name:lbaas_plugin_driver_path:default
    # service_provider = LOADBALANCER:F5:f5.oslbaasv1driver.drivers.plugin_driver.F5PluginDriver:default
    # service_provider = LOADBALANCER:Haproxy:neutron_lbaas.services.loadbalancer.drivers.haproxy.plugin_driver.HaproxyOnHostPluginDriver:default
    # service_provider = LOADBALANCER:radware:neutron_lbaas.services.loadbalancer.drivers.radware.driver.LoadBalancerDriver:default
    # service_provider = LOADBALANCER:NetScaler:neutron_lbaas.services.loadbalancer.drivers.netscaler.netscaler_driver.NetScalerPluginDriver
    # service_provider = LOADBALANCER:Embrane:neutron_lbaas.services.loadbalancer.drivers.embrane.driver.EmbraneLbaas:default
    # service_provider = LOADBALANCER:A10Networks:neutron_lbaas.services.loadbalancer.drivers.a10networks.driver_v1.ThunderDriver:default
    # service_provider = LOADBALANCER:VMWareEdge:neutron_lbaas.services.loadbalancer.drivers.vmware.edge_driver.EdgeLoadbalancerDriver:default
    

VxLAN traffic doesn’t reach BIG-IP device

  1. Check the BIG-IP vtep port lockdown settings. The default setting for port lockdown behavior does not include VxLAN traffic. Set the vtep to ‘Allow All’ to ensure that the BIG-IP device allows VxLAN traffic from the OpenStack cloud.

  2. Check the VxLAN port binding.

    If you’re using the default Open vSwitch (ovs) core plugin, run the command ovs-vsctl show to view a list of configured bridges and associated ports. As shown in the example below, there should be a remote_ip address for a VxLAN tunnel that corresponds to the self IP identified in the F5 agent configuration file.

    The ovs bridge has a remote_ip address that corresponds to the BIG-IP vtep self IP address.
    # ON NEUTRON CONTROLLER
    [user@host-19 ~(keystone_user)]$ sudo ovs-vsctl show
    f08cd9da-cf33-4bc6-bdd2-960caed1136c
    Bridge br-ex
       ...
    Bridge br-tun
       fail_mode: secure
       Port "vxlan-c9001901"
           Interface "vxlan-c9001901"
               type: vxlan
               options: {df_default="true", in_key=flow, local_ip="201.0.20.1", out_key=flow, remote_ip="201.0.25.1"}
       Port br-tun
           Interface br-tun
               type: internal
       Port "vxlan-0a020264"
           Interface "vxlan-0a020264"
               type: vxlan
               options: {df_default="true", in_key=flow, local_ip="201.0.20.1", out_key=flow, remote_ip="10.2.2.100"}
       ...
    

    TMSH

    admin@(localhost)(cfg-sync Standalone)(Active)(/Common)(tmos.net)# list self vtep
    net self vtep {
       address 10.2.2.100/16
       allow-service all
       traffic-group traffic-group-local-only
       vlan external
    }