Can we avoid topology-aware routing annotations being added to services?

[hhue13]

Type of question

Configuration of Open Liberty operator

Question

What did you do?

Starting with #497 the Open Liberty operator annotates the Service CR with the annotation to enable tolopogy-aware routing. I.e. the following annotations are set:

metadata:
  annotations:
    service.kubernetes.io/topology-aware-hints: Auto
    service.kubernetes.io/topology-mode: Auto

This however cases the following events being fired repeatedly in our environment:

TopologyAwareHintsDisabled Insufficient Node information: allocatable CPU or zone not specified on one or more nodes, addressType: IPv4

What did you expect to see?

Service CR created by the Open Liberty operator not being annotated with service.kubernetes.io/topology-aware-hints and service.kubernetes.io/topology-mode

What did you see instead? Under which circumstances?

Service CR created by the Open Liberty operator is annotated with:

metadata:
  annotations:
    service.kubernetes.io/topology-aware-hints: Auto
    service.kubernetes.io/topology-mode: Auto

Environment

• Kubernetes version information:

clientVersion:
  buildDate: "2024-11-04T03:05:04Z"
  compiler: gc
  gitCommit: d691257345aeeec951c763e11658a944037f9b39
  gitTreeState: clean
  gitVersion: v1.25.2
  goVersion: go1.19.13 X:strictfipsruntime
  major: "1"
  minor: "25"
  platform: linux/amd64
kustomizeVersion: v4.5.7
serverVersion:
  buildDate: "2024-09-25T18:21:27Z"
  compiler: gc
  gitCommit: 4c2e25b907743906b0b4cbb269d8f8edfab24a6e
  gitTreeState: clean
  gitVersion: v1.29.8+632b078
  goVersion: go1.21.13 (Red Hat 1.21.13-5.el9_4) X:strictfipsruntime
  major: "1"
  minor: "29"
  platform: linux/amd64

WARNING: version difference between client (1.25) and server (1.29) exceeds the supported minor version skew of +/-1

• OpenShift version information (if applicable):

Client Version: 4.12.69
Kustomize Version: v4.5.7
Kubernetes Version: v1.29.8+632b078

• Appsody CLI version (if applicable):
  n/a

• Appsody Stack (if applicable):
  n/a

So the question is - how can we prevent the service annotations service.kubernetes.io/topology-aware-hints and service.kubernetes.io/topology-mode?

[leochr]

@hhue13 Liberty Operator doesn't currently support a configuration to disable/prevent the topology-aware annotations from being added to the Service. But you can use the .spec.service.annotations field in the OpenLibertyApplication CR to override it. Could you please try the following to see if that removes the above-specified event(s) from being fired in your cluster? Thank you.

  service:
    annotations:
      service.kubernetes.io/topology-aware-hints: Disabled
      service.kubernetes.io/topology-mode: Disabled