patch-zookeeper.yaml

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---
- # increase container resource allocations
  op: replace
  path: /spec/template/spec/containers/0/resources
  value:
    requests:
      cpu: '1.0'
      memory: 1Gi
    limits:
      cpu: '2.0'
      memory: 4Gi
- # update the launch command
  op: add
  path: /spec/template/spec/containers/0/command
  value:
  - sh
  - -c
  - |-
    # Make the heap be a fraction of the requested memory size.
    # Make 'servers' count agree with replicas count.
    /usr/bin/zookeeper/start.sh --servers=5 --percentage=50 --max_client_cnxns=300 --quorum_listen_on_all_ips=true
- # increase storage volume size
  op: replace
  path: /spec/volumeClaimTemplates/0/spec/resources/requests/storage
  value: 5Gi
- # specify pod scheduling anti-affinity
  op: add
  path: /spec/template/spec/affinity
  value:
    podAntiAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
      - labelSelector:
          matchLabels:
            app: hadoop
            role: zookeeper
        topologyKey: kubernetes.io/hostname