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Hi, stopping galera needs to be done in proper order manually. kolla-ansible stop is not enough for it.

Find the master node in your cluster, stop slaves, and finally stop master. To start first master, then slaves.

If this is not done, the cluster is broken due slaves doenst have the last writte.

If now is broken. stop your mariadb containers and execute kolla-ansible -i inventory mariadb_recovery.

This command will find the last master, and start the database recovery process.