consul

gistfile1.txt

apiVersion: apps/v1alpha1
kind: PetSet
metadata:
  name: consul
  namespace: evoc
spec:
  serviceName: consul
  replicas: 3
  template:
    metadata:
      name: consul
      labels:
        app: consul
      annotations:
        pod.alpha.kubernetes.io/initialized: "true"
    spec:
      securityContext:
        fsGroup: 1000
      containers:
      - name: consul
        image: "consul:v0.6.4"
        imagePullPolicy: "Always"
        ports:
        - name: http
          containerPort: 8500
        - name: rpc
          containerPort: 8400
        - name: serflan-tcp
          protocol: "TCP"
          containerPort: 8301
        - name: serflan-udp
          protocol: "UDP"
          containerPort: 8301
        - name: serfwan-tcp
          protocol: "TCP"
          containerPort: 8302
        - name: serfwan-udp
          protocol: "UDP"
          containerPort: 8302
        - name: server
          containerPort: 8300
        - name: consuldns
          containerPort: 8600
        resources:
          requests:
            cpu: 100m
            memory: 512Mi
        env:
        - name: INITIAL_CLUSTER_SIZE
          value: "3"
        - name: PETSET_NAME
          value: "consul"
        - name: PETSET_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        volumeMounts:
        - name: datadir
          mountPath: /var/lib/consul
        command:
          - "/bin/sh"
          - "-ec"
          - |
            IP=$(hostname -i)

            for i in $(seq 0 $((${INITIAL_CLUSTER_SIZE} - 1))); do
                while true; do
                    echo "Waiting for ${PETSET_NAME}-${i}.${PETSET_NAME} to come up"
                    ping -W 1 -c 1 ${PETSET_NAME}-${i}.${PETSET_NAME}.${PETSET_NAMESPACE}.svc.cluster.local > /dev/null && break
                    sleep 1s
                done
            done

            PEERS=""
            for i in $(seq 0 $((${INITIAL_CLUSTER_SIZE} - 1))); do
                PEERS="${PEERS}${PEERS:+ } -retry-join $(ping -c 1 ${PETSET_NAME}-${i}.${PETSET_NAME}.${PETSET_NAMESPACE}.svc.cluster.local | awk -F'[()]' '/PING/{print $2}')"
            done

            exec /bin/consul agent \
              -data-dir=/var/lib/consul \
              -server \
              -bootstrap-expect=${INITIAL_CLUSTER_SIZE} \
              -bind=0.0.0.0 \
              -advertise=${IP} \
              ${PEERS} \
              -client=0.0.0.0
  volumeClaimTemplates:
  - metadata:
      name: datadir
      annotations:
        volume.alpha.kubernetes.io/storage-class: anything
    spec:
      accessModes:
        - "ReadWriteOnce"
      resources:
        requests:
          # upstream recommended max is 700M
          storage: 1Gi
          
###################
apiVersion: v1
kind: Service
metadata:
  name: consul-http
  labels:
    name: consul-http
spec:
  ports:
    - name: http
      port: 8500
      targetPort: 8500
  selector:
    app: consul
  type: LoadBalancer