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[Hua Zhang <joshua.zhang@xxxxxxxxxxxxx>]

Public bug reported:

Commit 185d6cbc648fd041402a5034b04b818da5c7136e added support for
keepalived VRRP health check, but it will cause constantly VRRP
transitions if you actually enable the option
ha_vrrp_health_check_interval.

It seems to be because keepalived can't run ha_check_script_1.sh well,
while we can run ha_check_script_1.sh well by hand.

Sep 18 08:19:41 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: /var/lib/neutron/ha_confs/909c6b55-9bc6-476f-9d28-c32d031c41d7/ha_check_script_1.sh exited with status 1
Sep 18 08:19:41 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Script(ha_health_check_1) failed
Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) Entering FAULT STATE
Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) removing protocol Virtual Routes
Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) removing protocol VIPs.
Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) removing protocol E-VIPs.
Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) Now in FAULT state

root@juju-23f84c-queens-dvr-5:~# ll /var/lib/neutron/ha_confs/909c6b55-9bc6-476f-9d28-c32d031c41d7/ha_check_script_1.sh
-r-x-w---- 1 neutron neutron 109 Sep 18 03:45 /var/lib/neutron/ha_confs/909c6b55-9bc6-476f-9d28-c32d031c41d7/ha_check_script_1.sh*

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1793102

Title:
  ha_vrrp_health_check_interval causes constantly VRRP transitions

Status in neutron:
  New

Bug description:
  Commit 185d6cbc648fd041402a5034b04b818da5c7136e added support for
  keepalived VRRP health check, but it will cause constantly VRRP
  transitions if you actually enable the option
  ha_vrrp_health_check_interval.

  It seems to be because keepalived can't run ha_check_script_1.sh well,
  while we can run ha_check_script_1.sh well by hand.

  Sep 18 08:19:41 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: /var/lib/neutron/ha_confs/909c6b55-9bc6-476f-9d28-c32d031c41d7/ha_check_script_1.sh exited with status 1
  Sep 18 08:19:41 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Script(ha_health_check_1) failed
  Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) Entering FAULT STATE
  Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) removing protocol Virtual Routes
  Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) removing protocol VIPs.
  Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) removing protocol E-VIPs.
  Sep 18 08:19:43 juju-23f84c-queens-dvr-5 Keepalived_vrrp[8448]: VRRP_Instance(VR_1) Now in FAULT state

  root@juju-23f84c-queens-dvr-5:~# ll /var/lib/neutron/ha_confs/909c6b55-9bc6-476f-9d28-c32d031c41d7/ha_check_script_1.sh
  -r-x-w---- 1 neutron neutron 109 Sep 18 03:45 /var/lib/neutron/ha_confs/909c6b55-9bc6-476f-9d28-c32d031c41d7/ha_check_script_1.sh*

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