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  1. OpenShift Bugs
  2. OCPBUGS-23328

Unable to change resource limit and request for Secondary Scheduler pods which is created through Secondary Scheduler operator

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      Description of problem:

      Unable to change resource limit and request for Secondary Scheduler pods which is created through Secondary Scheduler operator

      Version-Release number of selected component (if applicable):

      Secondary Scheduler operator 1.1.3 ( observed on current running version and seems it applicable for all the versions)

      How reproducible:

       

      Steps to Reproduce:

      1. Configure Secondary Scheduler using Secondary Scheduler operator
      2. By default the scheduler pods will be assigned below limit and request
      
      ~~~
       resources:
                limits:
                  cpu: 100m
                  memory: 500Mi
                requests:
                  cpu: 100m
                  memory: 500Mi
      ~~~
      
      3. In larger cluster the limit is not enough, the scheduler pods are frequently getting OOM killed and its affecting pod scheduling
      
      ~~~
      NAME                                   READY   STATUS    RESTARTS         AGE
      secondary-scheduler-75c5b6dc68-d5fq4   1/1     Running   16 (5m31s ago)   66m
      
          State:          Waiting
            Reason:       CrashLoopBackOff
          Last State:     Terminated
            Reason:       OOMKilled
            Exit Code:    137
      ~~~

      Actual results:

      Scheduler pods getting OOM killed and there is no option to increase the resource limit

      Expected results:

      Scheduler should not get OOM killed and there should an option to increase the resource limit

      Additional info:

       

              jchaloup@redhat.com Jan Chaloupka
              rhn-support-amuhamme MUHAMMED ASLAM V K
              Rama Kasturi Narra Rama Kasturi Narra
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                Created:
                Updated:
                Resolved: