Docker Redis Sentinel 高可用集群搭建指南

Docker Redis Sentinel 高可用集群搭建指南

前提条件：

• 已安装 Docker 和 docker-compose。
• 配置了镜像源加速，确保能够正常拉取镜像。

一、手动搭建 Docker Redis Sentinel

1. 拉取 Redis 镜像

docker pull redis

2. Redis 集群 IP 和端口设置（单机测试）
主节点：ip:6379
从节点：ip:6380, ip:6381
Sentinel 节点：ip:26379, ip:26380, ip:26381
二、部署主从 Redis（3台服务器）
1. 文件配置
主节点及 Sentinel 配置
docker-compose.yml：

```yaml
services:
  redis-master:
    image: redis:7.0.13
    restart: always
    container_name: redis-master
    privileged: true
    ports:
      - '6379:6379'
    volumes:
      - redis-data:/opt/bitnami/redis/data
      - /root/redis.conf:/etc/redis.conf
      - /etc/localtime:/etc/localtime:ro
    command:
      - /bin/sh
      - -c
      - redis-server /etc/redis.conf

  redis-sentinel:
    image: redis:7.0.13
    restart: always
    container_name: redis-sentinel
    privileged: true
    ports:
      - '26379:26379'
    volumes:
      - /root/sentinel.conf:/etc/sentinel.conf
      - /etc/localtime:/etc/localtime:ro
    command:
      - /bin/sh
      - -c
      - redis-server /etc/sentinel.conf --sentinel

volumes:
  redis-data:

redis.conf：

daemonize no
port 6379
protected-mode no
bind 0.0.0.0
requirepass 123456

sentinel.conf：

port 26379
protected-mode no
sentinel monitor mymaster 192.168.91.4 6379 2
sentinel auth-pass mymaster 123456
sentinel down-after-milliseconds mymaster 5000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 3000

从节点及 Sentinel 配置
docker-compose.yml：

services:
  redis-slave:
    image: redis:7.0.13
    restart: always
    container_name: redis-slave
    privileged: true
    ports:
      - '6379:6379'
    volumes:
      - redis-data:/opt/bitnami/redis/data
      - /root/redis.conf:/etc/redis.conf
      - /etc/localtime:/etc/localtime:ro
    command:
      - /bin/sh
      - -c
      - redis-server /etc/redis.conf

  redis-sentinel:
    image: redis:7.0.13
    restart: always
    container_name: redis-sentinel
    privileged: true
    ports:
      - '26379:26379'
    volumes:
      - /root/sentinel.conf:/etc/sentinel.conf
      - /etc/localtime:/etc/localtime:ro
    command:
      - /bin/sh
      - -c
      - redis-server /etc/sentinel.conf --sentinel

volumes:
  redis-data:
redis.conf：

daemonize no
port 6379
protected-mode no
masterauth 123456
requirepass 123456
slave-read-only yes
bind 0.0.0.0
slaveof 192.168.91.4 6379

sentinel.conf：

port 26379
protected-mode no
sentinel monitor mymaster 192.168.91.4 6379 2
sentinel auth-pass mymaster 123456
sentinel down-after-milliseconds mymaster 5000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 3000

从节点02及 Sentinel 配置
docker-compose.yml：

services:
  redis-slave02:
    image: redis:7.0.13
    restart: always
    container_name: redis-slave02
    privileged: true
    ports:
      - '6379:6379'
    volumes:
      - redis-data:/opt/bitnami/redis/data
      - /root/redis.conf:/etc/redis.conf
      - /etc/localtime:/etc/localtime:ro
    command:
      - /bin/sh
      - -c
      - redis-server /etc/redis.conf

  redis-sentinel:
    image: redis:7.0.13
    restart: always
    container_name: redis-sentinel
    privileged: true
    ports:
      - '26379:26379'
    volumes:
      - /root/sentinel.conf:/etc/sentinel.conf
      - /etc/localtime:/etc/localtime:ro
    command:
      - /bin/sh
      - -c
      - redis-server /etc/sentinel.conf --sentinel

volumes:
  redis-data:

redis.conf：

daemonize no
port 6379
protected-mode no
masterauth 123456
requirepass 123456
slave-read-only yes
bind 0.0.0.0
slaveof 192.168.91.4 6379

sentinel.conf：

port 26379
protected-mode no
sentinel monitor mymaster 192.168.91.4 6379 2
sentinel auth-pass mymaster 123456
sentinel down-after-milliseconds mymaster 5000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 3000

2. 启动集群
   在三台主机上分别执行以下命令启动 Redis 和 Sentinel 容器：

docker compose up -d

3. 检查 Sentinel 状态
   启动成功后，可以通过以下命令查看 Sentinel 的状态：

docker exec redis-sentinel redis-cli -p 26379 -c info sentinel