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Cluster size in PMM during SST

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  • Cluster size in PMM during SST

    When one of the nodes of a three node cluster rejoins the cluster after some downtime, the PMM dashboard shows a cluster size of one for a short amount of time. Does this mean the donor node is unavailable during SST? After a short amount of time, PMM shows a cluster size of three again.

  • #2
    The graph is using status variable wsrep_cluster_size, which shows number of connected nodes regardless of their state.
    Did you check the error logs to see if the donor fell out of the cluster for a moment during SST? What is your SST method?
    Last edited by przemek; 08-08-2018, 07:39 AM.

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