[ClusterLabs] Antw: Possbile cause of long down time of shared IP during manual failover.

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Wed Jun 3 02:40:11 EDT 2015

Resolver lookup times? I/O waits?

>>> Akira Miyazaki <akira.miyazaki at gmail.com> schrieb am 03.06.2015 um 02:59 in
<CAMwSzPqqAOe87wGbKEHvU9UPUuBHiYppKh_Z5iwfJxOaqL72sg at mail.gmail.com>:
> Hi all,
> I'm not familiar with pacemaker and corosync.
> And since it's first time to post here, I'm not sure if I may ask my
> question here.
> It maight be primitive question.
> Please let me know if I should ask at other place.
> My questions is for manual failover of shared IP.
> I have a test environments which share an IP by pacemaker and corosync.
> It's almost no load.
> Now I'm testing manual failover of Shared IP repeatedly.
> Env:
> pacemaker-
> corosync-1.4.4-3
> The downtime of the Shared IP is just a couple of seconds normally.
> But I sometimes encounter long down time when doing manual failover of
> shared IP.
> It takes about 90 sec.
> Question:
> Does anyone know possbile cause why such adowntime of Shared IP happen
> during manual failover?
> Regards,
> Akira

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