[ClusterLabs] vip is not removed after node lost connection with the other two nodes

Ken Gaillot kgaillot at redhat.com
Fri Jun 23 13:12:38 EDT 2017

On 06/23/2017 11:52 AM, Dimitri Maziuk wrote:
> On 06/23/2017 11:24 AM, Jan Pokorný wrote:
>> People using ifdown or the iproute-based equivalent seem far
>> too prevalent, even if for long time bystanders the idea looks
>> continually disproved ad nauseam.
> Has anyone had a network card fail recently and what does that look like
> on modern kernels? -- That's an honest question, I have not seen that in
> forever (fingers crossed knock on wood).
> I.e. is the expectation that real life failure will be "nice" to
> corosync actually warranted?

I don't think there is such an expectation. If I understand correctly,
the issue with using ifdown as a test is two-fold: it's not a good
simulation of a typical network outage, and corosync is unable to
recover from an interface that goes down and later comes back up, so you
can only test the "down" part. Implementing some sort of recovery
mechanism in that situation is a goal for corosync 3, I believe.

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