redis k8s

K8s 搭建 Redis 高可用 - 梦想歌の网络日志

将 Redis 的配置挂载到 ConfigMap

使用 ConfigMap 创建 redis.conf。

apiVersion: v1
kind: ConfigMap
metadata:
  labels:
    app.kubernetes.io/name: redis
    app.kubernetes.io/component: database
  name: redis
  namespace: tools
data:
  redis.conf: |-
    bind 0.0.0.0
    protected-mode yes
    port 6379
    tcp-backlog 511
    timeout 0
    tcp-keepalive 300
    daemonize no
    supervised no
    pidfile /var/run/redis_6379.pid
    loglevel notice
    #logfile "/data/redis.log"
    requirepass 123456
    #datadir "/data"
    databases 16
    save 900 1
    save 300 10
    save 60 10000
    stop-writes-on-bgsave-error yes
    rdbcompression yes
    rdbchecksum yes
    dbfilename dump.rdb
    dir ./
    slave-serve-stale-data yes
    slave-read-only yes
    repl-diskless-sync no
    repl-diskless-sync-delay 5
    repl-disable-tcp-nodelay no
    slave-priority 100
    appendonly no
    appendfilename "appendonly.aof"
    appendfsync everysec
    no-appendfsync-on-rewrite no
    auto-aof-rewrite-percentage 100
    auto-aof-rewrite-min-size 64mb
    aof-load-truncated yes
    lua-time-limit 5000
    slowlog-log-slower-than 10000
    slowlog-max-len 128
    latency-monitor-threshold 0
    notify-keyspace-events ""
    hash-max-ziplist-entries 512
    hash-max-ziplist-value 64
    list-max-ziplist-size -2
    list-compress-depth 0
    set-max-intset-entries 512
    zset-max-ziplist-entries 128
    zset-max-ziplist-value 64
    hll-sparse-max-bytes 3000
    activerehashing yes
    client-output-buffer-limit normal 0 0 0
    client-output-buffer-limit slave 256mb 64mb 60
    client-output-buffer-limit pubsub 32mb 8mb 60
    hz 10
    aof-rewrite-incremental-fsync yes

使用 StatefulSet 创建 Redis

apiVersion: apps/v1
kind: StatefulSet
metadata:
  labels:
    app.kubernetes.io/name: redis
    app.kubernetes.io/component: database
  name: redis
  namespace: tools
spec:
  podManagementPolicy: OrderedReady
  replicas: 6
  selector:
    matchLabels:
      app.kubernetes.io/name: redis
      app.kubernetes.io/component: database
  serviceName: redis-cluster
  template:
    metadata:
      labels:
        app.kubernetes.io/name: redis
        app.kubernetes.io/component: database
    spec:
      containers:
      - args:
        - /conf/redis.conf
        image: redis:5.0.5
        imagePullPolicy: IfNotPresent
        name: redis
        ports:
        - containerPort: 6379
          name: client
          protocol: TCP
        - containerPort: 16379
          name: gossip
          protocol: TCP
        resources:
          limits:
            cpu: 250m
            memory: 512Mi
          requests:
            cpu: 250m
            memory: 512Mi
        securityContext:
          privileged: false
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        volumeMounts:
        - mountPath: /conf
          name: conf
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
      volumes:
      - configMap:
          defaultMode: 493
          name: redis
        name: conf
  updateStrategy:
    rollingUpdate:
      partition: 0
    type: RollingUpdate

使用 redis-cli 初始化集群

初始化 Redis 集群

redis-cli --cluster create pod1_ip:6379 pod2_ip:6379 pod3_ip:6379 pod4_ip:6379 pod5_ip:6379 pod6_ip:6379 --cluster-replicas 1

验证 Redis 集群状态

通过命令查看集群是否分配成功

>> cluster info
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:6
cluster_size:3
cluster_current_epoch:9
cluster_my_epoch:7
cluster_stats_messages_ping_sent:12456796
cluster_stats_messages_pong_sent:12406231
cluster_stats_messages_update_sent:2
cluster_stats_messages_sent:24863029
cluster_stats_messages_ping_received:12406231
cluster_stats_messages_pong_received:12456024
cluster_stats_messages_fail_received:223
cluster_stats_messages_auth-req_received:2
cluster_stats_messages_update_received:3
cluster_stats_messages_received:24862483

>> cluster nodes
9416b9306b091de56a3568e15c230a5624d96bed pod1_ip:6379@16379 myself,slave 73401488a251b6d40d3b55c2c1bc4711b1cfa858 0 1662392497000 3 connected
5445d814ffbf8836991eacbdc7c8bf4dd7375419 pod2_ip:6382@16382 master - 0 1662392499000 9 connected 5461-10922
3e2405ca00ccd1160add2b63f447fd871f009c07 pod3_ip:6381@16381 master - 0 1662392499000 7 connected 0-5460
813c582e69c1862d83ebe42b9be1d34ee6de2ea7 pod4_ip:6379@16379 slave 5445d814ffbf8836991eacbdc7c8bf4dd7375419 0 1662392499267 9 connected
e7829ad2dda26f565a92d44a8f5f639785f7be85 pod5_ip:6379@16379 slave 3e2405ca00ccd1160add2b63f447fd871f009c07 0 1662392500270 7 connected
73401488a251b6d40d3b55c2c1bc4711b1cfa858 pod6_ip:6380@16380 master - 0 1662392498000 8 connected 10923-16383

使用 RedisInsight 工具查询集群效果

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最后编辑时间为: Jun 13, 2023 at 10:19 am