apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: redis-master
  namespace: default
  labels:
    name: redis-master
spec:
  serviceName: redis-master
  replicas: 1
  selector:
    matchLabels:
      app: redis-master
  template:
    metadata:
      labels:
        app: redis-master
        redis-master: "true"
      annotations:
        #disable istio sidecar injection
        sidecar.istio.io/inject: "false"
    spec:
      terminationGracePeriodSeconds: 10
      #imagePullSecrets: 
      #  - name: regsecret
      securityContext:
        sysctls:
          #kubernetes >= v1.11 and kernel version >= 4.15 needed
          #- name: kernel.msgmax
          #  value: "65536"
          - name: net.ipv4.tcp_syncookies
            value: "0"
          - name: net.ipv4.ip_local_port_range
            value: "1024 65535"
          - name: net.core.somaxconn
            value: "65535"
          - name: net.ipv4.ip_unprivileged_port_start
            value: "0"
          - name: net.ipv4.tcp_tw_reuse
            value: "1"
          - name: net.ipv4.tcp_fin_timeout
            value: "30"
          - name: net.ipv4.tcp_keepalive_intvl
            value: "10"
          - name: net.ipv4.tcp_keepalive_probes
            value: "2"
          - name: net.ipv4.tcp_keepalive_time
            value: "120"
          - name: net.ipv4.tcp_ecn
            value: "1"
          - name: net.ipv4.tcp_max_syn_backlog
            value: "65536"
          - name: net.ipv4.tcp_rfc1337
            value: "1"
          - name: net.ipv4.tcp_slow_start_after_idle
            value: "0"
          - name: net.ipv4.tcp_fack
            value: "1"
          - name: net.ipv4.tcp_max_tw_buckets
            value: "262144"
          - name: net.ipv4.tcp_fastopen
            value: "3"
          - name: net.ipv4.icmp_ratelimit
            value: "100"
          - name: net.ipv4.tcp_abort_on_overflow
            value: "1"
          - name: net.ipv4.tcp_adv_win_scale
            value: "2"
          - name: net.ipv4.tcp_retries2
            value: "8"
          - name: net.ipv4.tcp_syn_retries
            value: "3"
          - name: net.ipv4.tcp_synack_retries
            value: "2"
          - name: net.unix.max_dgram_qlen
            value: "512"
          - name: net.ipv4.tcp_fwmark_accept
            value: "1"
          - name: net.ipv4.fwmark_reflect
            value: "1"
      containers:
      - name: redis
        image: redis:5.0
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 6379
        env:
        - name: MASTER
          value: "true"
        #- name: REDIS_PASS
        #  valueFrom:
        #    secretKeyRef:
        #      name: redis-secret
        #      key: redisAuthPass
        resources:
          requests:
            memory: "256Mi"
            cpu: "250m"
          limits:
            memory: "2Gi"
            cpu: "2000m"
        volumeMounts:
        - name: redis-master-volume
          mountPath: /data
  volumeClaimTemplates:
  - metadata:
      name: redis-master-volume
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 10Gi
