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Can following scenario cause data loss on Repanda cluster using local disks even with replication? #10962

Answered by jcsp
pdeva asked this question in Q&A
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Redpanda's health API (as used in rpk cluster health) will report an unhealthy status when any partitions are under replicated. In the example above, partitions will be under-replicated after step 1, until all data has re-replicated to the replacement redpanda node.

The health API and associated metrics are used to ensure that redpanda node replacements are done safely:

  • When managing redpanda nodes automatically with Kubernetes, Redpanda's Kubernetes Operator and Helm chart configure a Pod Disruption Budget that requires the cluster to report OK health. This means that procedures like rolling upgrades will wait for the cluster to be healthy before stopping the next kubernetes node.
  • If an…

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