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Here you have an information about that bug - it's a known issue in 
Keepalived v.1.2.7
https://bugs.launchpad.net/neutron/+bug/1497272

Regards,
Lubosz

On 01/14/2016 02:27 AM, Ikuo Kumagai wrote:
> 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 
> '/var/lib/neutron/ha_confs/666d9e40-a95c-44a1-a876-bf44ca281f3e/keepalived.conf'.
> --
>
> 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.
>
> Regards
> Ikuo Kumagai
>
>
>
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