root@node02:~# journalctl -xe
-- The start-up result is done.
Feb 07 15:33:15 node02 audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=neutron-linuxbridge-agent comm="systemd" exe="/lib/systemd/systemd" hostname=? addr=? terminal=? res=s
Feb 07 15:33:16 node02 neutron-linuxbridge-agent[9269]: Guru meditation now registers SIGUSR1 and SIGUSR2 by default for backward compatibility. SIGUSR1 will no longer be registered in a future release,
Feb 07 15:33:18 node02 systemd[1]: neutron-linuxbridge-agent.service: Main process exited, code=exited, status=1/FAILURE
Feb 07 15:33:18 node02 systemd[1]: neutron-linuxbridge-agent.service: Unit entered failed state.
Feb 07 15:33:18 node02 audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=neutron-linuxbridge-agent comm="systemd" exe="/lib/systemd/systemd" hostname=? addr=? terminal=? res=fa
Feb 07 15:33:18 node02 systemd[1]: neutron-linuxbridge-agent.service: Failed with result 'exit-code'.
Feb 07 15:33:20 node02 systemd[1]: neutron-linuxbridge-agent.service: Service hold-off time over, scheduling restart.
Feb 07 15:33:20 node02 systemd[1]: Stopped neutron openstack service.
-- Subject: Unit neutron-linuxbridge-agent.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit neutron-linuxbridge-agent.service has finished shutting down.
Feb 07 15:33:20 node02 audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=neutron-linuxbridge-agent comm="systemd" exe="/lib/systemd/systemd" hostname=? addr=? terminal=? res=s
Feb 07 15:33:20 node02 audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=neutron-linuxbridge-agent comm="systemd" exe="/lib/systemd/systemd" hostname=? addr=? terminal=? res=su
Feb 07 15:33:20 node02 systemd[1]: Started neutron openstack service.
-- Subject: Unit neutron-linuxbridge-agent.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit neutron-linuxbridge-agent.service has finished starting up.
--
-- The start-up result is done.
Feb 07 15:33:20 node02 audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=neutron-linuxbridge-agent comm="systemd" exe="/lib/systemd/systemd" hostname=? addr=? terminal=? res=s