statefulset.yaml

{{$HostNetworkMode := DefaultParam .CL2_USE_HOST_NETWORK_PODS false}}
{{$EnablePVs := DefaultParam .CL2_ENABLE_PVS true}}
{{$RUN_ON_ARM_NODES := DefaultParam .CL2_RUN_ON_ARM_NODES false}}
{{$TOLERATION := DefaultParam .CL2_TOLERATION ""}}
{{$podPayloadSize := DefaultParam .CL2_STATEFULSET_POD_PAYLOAD_SIZE 0}}
{{$Image := DefaultParam .Image "registry.k8s.io/pause:3.9"}}
{{$RuntimeClassName := DefaultParam .CL2_RUNTIME_CLASS_NAME nil}}

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: {{.Name}}
  labels:
    group: load
spec:
  podManagementPolicy: Parallel
  selector:
    matchLabels:
      group: load
      name: {{.Name}}
  serviceName: {{.Name}}
  replicas: {{RandIntRange .ReplicasMin .ReplicasMax}}
  template:
    metadata:
      labels:
        group: load
        name: {{.Name}}
    spec:
      {{if $RuntimeClassName}}
      runtimeClassName: {{$RuntimeClassName}}
      {{end}}
      hostNetwork: {{$HostNetworkMode}}
      containers:
      - name: {{.Name}}
        image: {{$Image}}
        env:
        - name: ENV_VAR
          value: {{RandDataWithSeed $podPayloadSize .Name}}
        ports:
          - containerPort: 80
            name: web
        resources:
          # Keep the CpuRequest/MemoryRequest request equal percentage of 1-core, 4GB node.
          # For now we're setting it to 0.5%.
          requests:
            cpu: 5m
            memory: "20M"
        {{if $EnablePVs}}
        volumeMounts:
          - name: pv
            mountPath: /var/pv
        {{end}}
      terminationGracePeriodSeconds: 1
      # Add not-ready/unreachable tolerations for 15 minutes so that node
      # failure doesn't trigger pod deletion.
      tolerations:
      - key: "node.kubernetes.io/not-ready"
        operator: "Exists"
        effect: "NoExecute"
        tolerationSeconds: 900
      - key: "node.kubernetes.io/unreachable"
        operator: "Exists"
        effect: "NoExecute"
        tolerationSeconds: 900
      {{if $RUN_ON_ARM_NODES}}
      - key: "kubernetes.io/arch"
        operator: Equal
        value: arm64
        effect: NoSchedule
      {{end}}
      {{if $TOLERATION}}
      - key: {{$TOLERATION}}
        operator: Exists
        effect: NoSchedule
      {{end}}
  {{if $EnablePVs}}
  # NOTE: PVs created this way should be cleaned-up manually, as deleting the StatefulSet doesn't automatically delete PVs.
  # To avoid deleting all the PVs at once during namespace deletion, they should be deleted explicitly via Phase.
  volumeClaimTemplates:
    - metadata:
        name: pv
      spec:
        accessModes: [ "ReadWriteOnce" ]
        resources:
          requests:
            storage: 100Mi
  {{end}}