Restoring a Galera Cluster : 1 node is enough

Orange-OpenSource / galera-operator

Galera Operator automates tasks for managing a Galera cluster in Kubernetes

Apache License 2.0

34 stars 18 forks source link

Restoring a Galera Cluster : 1 node is enough #10

Closed ldangeard-orange closed 4 years ago

ldangeard-orange commented 4 years ago

When operatoir restore a Galera Cluster, ir restore MariaBackup backup on all nodes of the cluster.

This is of no interest, because after the bootstrap of the 1st node, the other nodes are not able to provide the last number of trasanction galera realize. There is automatically a synchronization of the node via SST.

So just restore on first node (bootstrap)

sebs42 commented 4 years ago

I understand your point of view but doing the restore process like this is today the best solution, because it is faster but also, the operator just starts x standalone instances and it will no do anything until datas are copied. If some standalone instance crashed or were killed during the restore process, it will not stop the restore process. If we have at least one running instance, the Galera cluster can be started.