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I'm running a Galera Cluster using 3 nodes. I shutdown 2 of the 3 nodes to service the appliance. After restarting the 2 servers, I get errors: "Failed to open backend connection: -110 (Connection timed out) "Failed to open channel 'galera_cluster' at ... lists the 2 nodes which were shutdown.

I shutdown MariaDB on the last running node, and ran command line : galera_new_cluster The other nodes still generate the same errors when attempting to start using sudo systemctl start mysql

Robert Daniels
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  • Next time, do only one node at a time. That way, the Cluster maintains a quorum. – Rick James Jan 10 '18 at 23:19
  • I ended up doing a sql backup of the remaining node, reset all nodes to 'clean' state with no data, added another 3 nodes for a total of 6, and started the new cluster, reloaded the sql databases and tables. – Robert Daniels Jan 12 '18 at 19:29

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