(config-changed) Cannot disable Router HA while ha enabled routers exist. Please remove any ha routers

[Aymen Frikha]

After restarting the host that contain neutron-api service, neutron-api service report: (config-changed) Cannot disable Router HA while ha enabled routers exist. Please remove any ha routers

Unit Workload Agent Machine Public address Ports Message

neutron-api/0 blocked executing 0/lxd/10 10.20.0.147 9696/tcp (config-changed) Cannot disable Router HA while ha enabled routers exist. Please remove any ha routers

There is a router ha already configured in openstack, but restarting the unit shouldn't provide this error message.

[Aymen Frikha (aym-frikha)]

juju logs for neutron-api

[Aymen Frikha (aym-frikha)]

neutron-server logs

[James Page (james-page)]

What's the value for configuration option 'enable-l3ha'?

[James Page (james-page)]

For context - if enable-l3ha is not set to True, and via an admin account you create a router with the HA flag enabled, this error will be thrown. Deployments intending to use HA routers should enable this flag so that routers by default are HA.

[Aymen Frikha (aym-frikha)]

enable-l3ha is set to true and a router is created via an admin account.

[Aymen Frikha (aym-frikha)]

juju version 2.0.2

[David Ames (thedac)]

See "Disabling L3 HA, l2-population must be disabled with L3 HA" in the log.

Having l2-population set to ture will cause this code block to return false which leads to the "Cannot disable Router HA while ha enabled routers exist. Please remove any ha routers" error.

def get_l3ha():
    if config('enable-l3ha'):
        if os_release('neutron-server') < 'juno':
            log('Disabling L3 HA, enable-l3ha is not valid before Juno')
            return False
        if get_l2population():
            log('Disabling L3 HA, l2-population must be disabled with L3 HA')
            return False
        return True
    else:
        return False

Please set l2-population to False.

This bug should be changed to better report to the end user what configuration problems may exist.

[Aymen Frikha (aym-frikha)]

When we put l2-polpulation to False it resolved the problem. It may needs better documentation on that, because l2-population by default is True.