TimeScaleDB - Cluster with failover and recoveryt.. Is it even possible


1 comment

  • Official comment
    Ashraf Sharif

    Hi Mark,

    ClusterControl does not support that kind of automatic recovery for all master-slave replication setup (MySQL as well). This is due to the fact that every master failure is considered a catastrophic failure and has to be investigated by the user before let it join back to the cluster. There are possibilities where the old master would appear not fit to join the cluster even as slave after it's available like disk full, WAL logs have been rotated, etc.

    Once the old master backs up, you have to manually sync it as a slave by going to CC -> Nodes -> pick the old master -> Node Actions -> Rebuild Replication Slave. Once it catches up, you can then promote this slave to be the master.

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