k8s manifest YAML for redis-sentinel set

redis-sentinel.yml

apiVersion: v1
kind: Service
metadata:
  name: redis-sentinel
  labels:
    app: redis-sentinel
spec:
  clusterIP: None
  ports:
  - name: redis-sentinel
    port: 26379
  selector:
    app: redis-sentinel
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: redis-sentinel
  labels:
    app: redis-sentinel
data:
  sentinel.conf: |
    # sentinel config
    port 26379
    sentinel monitor redis redis-0.redis 6379 2
    sentinel down-after-milliseconds redis 5000
---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: redis-sentinel
spec:
  serviceName: redis-sentinel
  replicas: 3
  selector:
    matchLabels:
      app: redis-sentinel
  template:
    metadata:
      labels:
        app: redis-sentinel
    spec:
      containers:
      - name: redis-sentinel
        command: ["redis-sentinel", "/etc/redis/sentinel.conf"]
        image: redis:5.0
        ports:
        - name: redis-sentinel
          containerPort: 26379
        volumeMounts:
        - name: conf
          mountPath: /etc/redis
        resources:
          requests:
            cpu: 100m
            memory: 256Mi
        readinessProbe:
          exec:
            command:
            - sh
            - -c
            - "/usr/local/bin/redis-cli -h $(hostname) -p 26379 ping"
          initialDelaySeconds: 15
          timeoutSeconds: 5
      initContainers:
        - name: copy-shared-config
          image: redis:5.0
          command:
            - /bin/bash
            - -c
            - "cp /mnt/config-map/sentinel.conf /mnt/redis/sentinel.conf"
          volumeMounts:
          - name: conf
            mountPath: /mnt/redis
          - name: config-map
            mountPath: /mnt/config-map
      volumes:
      - name: config-map
        configMap:
          name: redis-sentinel
  volumeClaimTemplates:
  - metadata:
      name: conf
    spec:
      accessModes: ["ReadWriteOnce"]
      resources:
        requests:
          storage: 10Mi

redis.yml

apiVersion: v1
kind: Service
metadata:
  name: redis
  labels:
    app: redis
spec:
  clusterIP: None
  ports:
  - name: redis
    port: 6379
  selector:
    app: redis
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: redis
  labels:
    app: redis
data:
  master.conf: |
    # Apply this config only on the master.
  slave.conf: |
    # Apply this config only on slaves.
    # todo this should be parameterized with the actual hostname
    slaveof redis-0.redis 6379
  shared.conf: |
    # Redis configuration file example.
    # ...
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: redis
spec:
  serviceName: redis
  replicas: 5
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
    spec:
      containers:
      - name: redis
        command: ["redis-server", "/etc/redis/redis.conf"]
        image: redis:5.0
        ports:
        - name: redis
          containerPort: 6379
        volumeMounts:
        - name: data
          mountPath: /data
        - name: conf
          mountPath: /etc/redis
        resources:
          requests:
            cpu: 100m
            memory: 256Mi
        readinessProbe:
          exec:
            command:
            - sh
            - -c
            - "/usr/local/bin/redis-cli -h $(hostname) ping"
          initialDelaySeconds: 15
          timeoutSeconds: 5
      initContainers:
        - name: copy-shared-config
          image: redis:5.0
          command:
            - /bin/bash
            - -c
            - "cp /mnt/config-map/shared.conf /mnt/redis/redis.conf"
          volumeMounts:
          - name: conf
            mountPath: /mnt/redis
          - name: config-map
            mountPath: /mnt/config-map
        - name: copy-ordinal-config
          image: redis:5.0
          command:
            - /bin/bash
            - -c
            - "if [[ `hostname` =~ -0$ ]]; then ROLE=\"master\"; else ROLE=\"slave\"; fi && cat /mnt/config-map/${ROLE}.conf >> /mnt/redis/redis.conf"
          volumeMounts:
          - name: conf
            mountPath: /mnt/redis
          - name: config-map
            mountPath: /mnt/config-map
      volumes:
      - name: config-map
        configMap:
          name: redis
  volumeClaimTemplates:
  - metadata:
      name: data
    spec:
      accessModes: ["ReadWriteOnce"]
      resources:
        requests:
          storage: 500Mi
  - metadata:
      name: conf
    spec:
      accessModes: ["ReadWriteOnce"]
      resources:
        requests:
          storage: 10Mi