Comment 0 for bug 1823038

As fix for bug https://bugs.launchpad.net/neutron/+bug/1818614 we added to neutron-keepalived-state-change monitor possibility to check initial status of router (master or slave).

Unfortunately for some reason I see now in journal log of functional job that this check is failing with error like:

Apr 03 09:19:09 ubuntu-bionic-ovh-gra1-0004666718 neutron-keepalived-state-change[1553]: 2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change [-] Failed to get initial status of router cd300e6b-8222-4100-8f6a-3b5c4d5fe37b: FailedToDropPrivileges: privsep helper command exited non-zero (96)
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change Traceback (most recent call last):
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change File "/home/zuul/src/git.openstack.org/openstack/neutron/neutron/agent/l3/keepalived_state_change.py", line 98, in handle_initial_state
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change for address in ip.addr.list():
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change File "/home/zuul/src/git.openstack.org/openstack/neutron/neutron/agent/linux/ip_lib.py", line 540, in list
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change **kwargs)
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change File "/home/zuul/src/git.openstack.org/openstack/neutron/neutron/agent/linux/ip_lib.py", line 1412, in get_devices_with_ip
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change devices = privileged.get_link_devices(namespace, **link_args)
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change File "/home/zuul/src/git.openstack.org/openstack/neutron/.tox/dsvm-functional-python27/local/lib/python2.7/site-packages/oslo_privsep/priv_context.py", line 240, in _wrap
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change self.start()
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change File "/home/zuul/src/git.openstack.org/openstack/neutron/.tox/dsvm-functional-python27/local/lib/python2.7/site-packages/oslo_privsep/priv_context.py", line 251, in start
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change channel = daemon.RootwrapClientChannel(context=self)
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change File "/home/zuul/src/git.openstack.org/openstack/neutron/.tox/dsvm-functional-python27/local/lib/python2.7/site-packages/oslo_privsep/daemon.py", line 328, in __init__
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change raise FailedToDropPrivileges(msg)
                                                                                         2019-04-03 09:19:09.778 1553 ERROR neutron.agent.l3.keepalived_state_change FailedToDropPrivileges: privsep helper command exited non-zero (96)

Example of such error: http://logs.openstack.org/25/645225/8/check/neutron-functional-python27/0704654/controller/logs/journal_log.txt.gz#_Apr_03_09_19_09