pod admission mutate patch affinity

[jiamin13579]

Admission pods, resourceGroups support mutate patch pod affinity. The format is a json string.

volcano-admission.conf example

apiVersion: v1
data:
  volcano-admission.conf: |
    resourceGroups:
    - resourceGroup: fixed                        # if the object is unsetted, default is:  the key is annotation,
      schedulerName: volcano                      # the annotation key is fixed and is "volcano.sh/resource-group", The corresponding value is the resourceGroup field
      object:
        key: annotation
        value:
        - "volcano.sh/resource-group-job-role: master"
      # set the affinity for patching, the format is a json string.
      affinity: "{\"nodeAffinity\":{\"requiredDuringSchedulingIgnoredDuringExecution\":{\"nodeSelectorTerms\":[{\"matchExpressions\":[{\"key\":\"volcano.sh/nodetype",\"operator\":\"In\",\"values\":[\"fixed\"]}]}]}}}"
kind: ConfigMap
metadata:
  annotations:
    meta.helm.sh/release-name: volcano
    meta.helm.sh/release-namespace: volcano-system
  labels:
    app.kubernetes.io/managed-by: Helm
  name: volcano-admission-configmap
  namespace: volcano-system

[wangyang0616]

/ok-to-test

[wangyang0616]

/retest

[hwdef]

What is the background of this function

[jiamin13579]

What is the background of this function

We want to use more rich affinity configurations to control pod allocation, which may not only be node selection. In case of insufficient machines, we can occupy cluster resources of other services.

[hwdef]

Sorry I still don't understand the scenario, please be more specific or give an example, thanks

[hwdef]

/lgtm

[william-wang]

I just restarted the ci.

[hwdef]

/lgtm

[william-wang]

/lgtm
/approve

[volcano-sh-bot]

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