[openstack-dev] [neutron][L3] Wrong fail over of HA-Router

Ikuo Kumagai i-kumagai at bit-isle.co.jp
Thu Jan 14 01:27:19 UTC 2016

Hi All

Could you give me some advice for our problem?

We use Neutron L3-HA.
When I associate/disassociate floating-ip, the state of ha keepalived
become MASTER/MASTER state. Then
Because at that time,the sending of vrrp packet from MASTER to BACKUP stop
for 40 seconds.

I checked logs of Keepalived, there is the 40 seconds delay of between Log
( Initializing ipvs 2.6) and Log (Opening file ~).
ex is below.
Jan 14 09:51:22 stg-anlk-ctrl003 Keepalived_vrrp[1989701]: Initializing
ipvs 2.6
Jan 14 09:52:02 stg-anlk-ctrl003 Keepalived_vrrp[1989701]: Opening file

During this time, the packet of vrrp for MASTER to BACKUP,so BACKUP changes
to MASTER, and then original MASTER starts sendding  vrrp packets again.

The versions of our environment is below
 - Keepalived v1.2.7 (08/14,2013)
 - Linux stg-anlk-ctrl003 3.13.0-74-generic #118-Ubuntu SMP Thu Dec 17
22:52:10 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

We did a adjustement of ha_vrrp_advert_int to avoid this.
But I would like to know why is  the term always 40 seconds.

If you know anything about that please let me know.

Ikuo Kumagai
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