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Status Submitted
Workspace WebSphere Liberty
Created by Guest
Created on May 27, 2024

RELATED IDEAS

Add support for tolerations in Liberty Operator

Environment: Websphere Liberty on Openshift

We need our Liberty pods to run on dedicated nodes in our clusters and crucially keep all other pods away from these nodes. (The Liberty pods are just a small part of our total number of pods in the cluster).

This would have been very easy to solve with taints and tolerations:

  • Set taint on the dedicated nodes for liberty (this we do ourselves)
  • Set toleration for said taint on the liberty deployments/pods (this we expected to be able to do through the WebsphereLibertyApplication CRD)

Our "workaround" today has been to add a custom-label on all our non-liberty nodes and then set a node-selector on all our "non-liberty-pods" towards that label.

TLDR; it would be more elegant and less maintenance/error-prone for us if we could set tolerations through the WebsphereLibertyApplication CRD. Can this be implemented?

The field within a deployment we would like to manage:

spec:
  template:
    spec:
      tolerations: <our-custom-liberty-node-toleration>

 

Please see the github registration agreed in a meeting with client and product engineer.

https://github.com/WASdev/websphere-liberty-operator/issues/652

Idea priority High

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