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Investigate managed Kubernetes cluster upgrades #2448

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david-kow opened this issue Jan 20, 2020 · 0 comments
Open

Investigate managed Kubernetes cluster upgrades #2448

david-kow opened this issue Jan 20, 2020 · 0 comments
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discuss We need to figure this out >docs Documentation

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@david-kow
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As pointed out in https://discuss.elastic.co/t/gke-upgrade-and-pdb/215661, GKE auto-upgrades respect PDB only for limited amount of time (1 hour). This might interfere with relocating shards which would be triggered when:

  • it takes more than 1 minute for a given ES node to come back, or
  • cluster is using local storage that is removed on k8s node upgrade.

We should investigate the consequences of this behaviour for ECK and ECK managed ES clusters on GKE and other managed k8s solutions.

Maybe we should also give configuration recommendations around this.

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