# Questions on Timeout Options

**URL:** <https://forums.percona.com/t/questions-on-timeout-options/2482>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [September 28, 2012, 5:31pm UTC](https://forums.percona.com/t/questions-on-timeout-options/2482 "2012-09-28T17:31:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jlaban](https://avatars.discourse-cdn.com/v4/letter/j/51bf81/32.png) [@jlaban](https://forums.percona.com/u/jlaban)\
**Post date:** [September 28, 2012, 5:31pm UTC](https://forums.percona.com/t/questions-on-timeout-options/2482/1 "2012-09-28T17:31:32Z")

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Hi,

I’ve gone through the galera options here: [http://www.codership.com/wiki/doku.php?id=galera\_parameters\_](http://www.codership.com/wiki/doku.php?id=galera_parameters_) 0.8

But was looking for a bit more detail on the following timeout options 3 and how they interact:

evs.suspect\_timeout  
evs.inactive\_timeout  
evs.consensus\_timeout

Specifically, lets say we have a 3 node cluster, and one of the nodes (node A) starts experiencing increased latency. If node B doesn’t hear from it for more than the suspect\_timeout, it tries to remove it from the cluster. My questions specifically have to do with what happens if node C doesn’t agree that node A is unavailable?

First Question: If node B still doesn’t hear from it within the inactive\_timeout, what happens? Does node A get removed from the cluster regardless of what node C believes?

Second Question: If my above interpretation of inactive\_timeout is correct, then what does consensus\_timeout do? I mean, if one node can unilaterally decide on cluster membership after inactive\_timeout is reached, why would there be a consensus issue?

Third Question: consensus\_timeout probably has a point that I’m not seeing. If so, what happens after the consensus\_timeout is reached and they can’t come to a consensus? Does the node get removed anyway, or does it stay in the cluster, or does the whole cluster just lock up? (I’ve seen some cases where the cluster freezes up and everyone goes into the Initialized state, and I’m wondering if this is the reason.)

I know there are a bunch of questions above, but if you had answers to any of them individually, the answers would be very appreciated!

Thanks,  
John