With version 2:8.1.0-0ubuntu0.16.04.2 from xenial-proposed the stale pid file is removed and the l3-agent can start the new keepalived successfully.
Maybe we could also get rid of this error that is still being logged: 2016-05-20 10:43:00.913 16153 ERROR neutron.agent.linux.utils [-] Unable to convert value in /var/lib/neutron/ha_confs/0ab5f647-1e04-4345-ae9b- ee66c6f08882.pid It comes from neutron not being able to convert an empty string to an int. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583503 Title: keepalived fails to start when PID file is empty To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1583503/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs