8000 Replace ceph monitors in Pending state on non-existing hosts more quickly · Issue #15953 · rook/rook · GitHub
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Replace ceph monitors in Pending state on non-existing hosts more quickly #15953

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telmich opened this issue Jun 5, 2025 · 0 comments
Open

Replace ceph monitors in Pending state on non-existing hosts more quickly #15953

telmich opened this issue Jun 5, 2025 · 0 comments
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@telmich
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telmich commented Jun 5, 2025

Is this a bug report or feature request?

  • Feature Request

What should the feature do:

When the rook-operator find a ceph monitor deployment that is

  • a) in state PENDING
  • b) having a nodeSelector for a node that does not exist (anymore)

immediately create a new deployment using a new, existing node from the kubernetes cluster.

What is use case behind this feature:

The background is mostly explained in #6663 (comment), but as a summary:

  • Nodes can vanish in a kubernetes environment (being deleted, hardware failure, etc.)
  • The ceph monitors on those will not be deploy-able anymore, as the containe a nodeSelector field referencing a non-existing node
  • Thus the pods will get stuck in PENDING state
  • Rook has a standard 2x 10 minute timeout for updating stuck monitors, but in case a&b are given, a deployment can

Environment:

Kubernetes
@telmich telmich added the feature label Jun 5, 2025
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