Configuring OpenShift masters for overcommit using openshift-ansible

Solution Verified - Updated -

Issue

  • How to configure masters for overcommitment from ansible inventory similar to the following parameters in master-config.yaml:

    kubernetesMasterConfig:
      admissionConfig:
        pluginConfig:
          ClusterResourceOverride:   
            configuration:
              apiVersion: v1
              kind: ClusterResourceOverrideConfig
              memoryRequestToLimitPercent: 25  
              cpuRequestToLimitPercent: 25     
              limitCPUToMemoryPercent: 200
    
  • How to handle issues around scheduling and memory handling of a node.
  • How do I prevent OpenShift nodes from hanging?
  • What are the recommendations to prevent node overcommitment?

Environment

  • OpenShift Container Platform 3.5

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