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Clustering

Submitted by srikanth.vukkadapu on Fri, 2017-12-01 08:51

Hi

We have a 3 node cluster has no persistent data stored in mnesia. However we have the sessions data stored in Mnesia which are any way RAM copies. While stopping the node is it ok to remove the node from the cluster and re-join the node when it is back up again. Will there be any performance impacts because of this

Thanks,
Srikanth V

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I think the only penalty is

Submitted by badlop on Mon, 2017-12-04 12:09.

I think the only penalty is caused when joining the cluster, due to table synchronization. So, if that leave&join is rare (every day or few days, and not every hour or few minutes), or at least the amount of sessions is small (only hundreds or thousands, not millions), then there should be no problem.

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Thanks Badlop. The join &

Submitted by srikanth.vukkadapu on Tue, 2017-12-05 07:36.

Thanks Badlop.
The join & leave is not frequent and will be done once every few days. The number of sessions will be around 100K. What will be the penalty in this case? When will the RAM copies be deleted? Don't they get deleted after the node is stopped? If that is the case does the sync happen every time when the node goes down and comes up?

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