** Also affects: neutron/kilo
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1561046
Title:
If there is a /var/lib/neutron/ha_confs/<router-id>.pid then l3 agent
fails to spawn a keepalived process for that router
Status in neutron:
Fix Released
Status in neutron kilo series:
New
Bug description:
If the .pid file for the previous keepalived process (located in
/var/lib/neutron/ha_confs/<router_id>.pid) already exists then the L3
agent fails to spawn a keepalived process for that router.
For example, upon neutron node shutdown and restart the processes are
assigned new PIDs that can be same as those previously assigned to
some of the keepalived processes. The latter are captured in PID files
and once keepalived starts, it detects that there is a running process
with that PID and reports "daemon is already running".
Steps to reproduce:
1) Pick a router that you want to make display this issue; record the
router_id
2) kill the two processes denoted in these two files:
/lib/neutron/ha_confs/<router_id>.pid and
/lib/neutron/ha_confs/<router_id>.pid-vrrp
3) Make sure that no keepalived process comes back for this router
4) Now pick out an existing process id - anything that's really running -
and put that processid into the PID files. For example, a background sleep
process running as pid 12345 can be put into <router_id>.pid file and
<router_id>.pid-vrrp.
Bug valid with keepalived version 1.2.13 and 1.2.19.
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