[BUG] While scaling up a non-HA etcd cluster: intermediate clusterSize of 2
is most vulnerable
#641
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2
is most vulnerable
#641
Describe the bug:
It has been observed in between of scaling up(
1->3 replicas
) a non-HA etcd cluster to HA etcd cluster if second member has join the cluster successful and due to some reasons third member didn’t join the cluster yet(any reason like volume attachment), then.status.clusterSize
will become2
and this is most vulnerable state of etcd cluster as if anyone from the running cluster members(either 1 or 2) goes down then it can cause quorum loss:gardener.cloud/scaled-to-multi-node
still be present in etcd statefulset.etcd CR status:
Expected behaviour:
How To Reproduce (as minimally and precisely as possible):
Logs:
Environment (please complete the following information):
Anything else we need to know?:
This will not be resolved by harmonise scale-up.
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