容器化部署redis高可用（一主两从三哨兵）

redis一主两从部署

mkdir /redis
vim docker-compose.yml
version: '3'
services:
  master:
    image: redis:5.0.9-alpine3.11
    container_name: redis-master
    network_mode: host
    restart: always
    volumes:
      - /redis/node-1/data:/data    #目录没有创建就好了，/data下存放的是dump.rdb文件方便后面做数据持久化
      - /redis/node-1/conf/redis.conf:/etc/redis/redis.conf   #配置文件是从其他redis主机拷贝过来的
    command: redis-server /etc/redis/redis.conf

  slave1:
    image: redis:5.0.9-alpine3.11
    container_name: redis-slave-1
    network_mode: host
    restart: always
    volumes:
      - /redis/node-2/data:/data
      - /redis/node-2/conf/redis.conf:/etc/redis/redis.conf
    command: redis-server /etc/redis/redis.conf
    depends_on:
      - master

  slave2:
    image: redis:5.0.9-alpine3.11
    container_name: redis-slave-2
    network_mode: host
    restart: always
    volumes:
      - /redis/node-3/data:/data
      - /redis/node-3/conf/redis.conf:/etc/redis/redis.conf
    command: redis-server /etc/redis/redis.conf
    depends_on:
      - master

主节点配置文件编辑

#bind 127.0.0.1

requirepass 密码

允许远程登录和设置密码

两台从节点配置文件编辑

#bind 127.0.0.1
port 6380
requirepass 密码
slaveof ip 端口   #填写master节点的ip+端口
masterauth  密码  #如果master设置了密码这里也需要填写master的密码否则无法连接

docker-compose up -d启动集群

测试

[root@pc-test redis]# docker exec -it redis-master /bin/sh
/data # redis-cli -c
127.0.0.1:6379> auth 密码
OK
127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:2
slave0:ip=192.168.1.184,port=6380,state=online,offset=126,lag=0
slave1:ip=192.168.1.184,port=6381,state=online,offset=126,lag=1
master_replid:fb584d49c371d8dfb49794398fdc69190e660fdb
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:126
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:126

哨兵搭建

mkdir redis-sentinel
vim docker-compose.yml
version: '2'
services:
  sentinel1:
    image: redis:5.0.9-alpine3.11       ## 镜像
    container_name: redis-sentinel-1
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    network_mode: host
    restart: always
    volumes:
    - /redis/node-1/conf/sentinel.conf:/usr/local/etc/redis/sentinel.conf

  sentinel2:
    image: redis:5.0.9-alpine3.11       ## 镜像
    container_name: redis-sentinel-2
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    network_mode: host
    restart: always
    volumes:
    - /redis/node-2/conf/sentinel.conf:/usr/local/etc/redis/sentinel.conf

  sentinel3:
    image: redis:5.0.9-alpine3.11       ## 镜像
    container_name: redis-sentinel-3
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    network_mode: host
    restart: always
    volumes:
    - /redis/node-3/conf/sentinel.conf:/usr/local/etc/redis/sentinel.conf

配置文件设置

vim /redis/node-1/conf/sentinel.conf
sentinel monitor myredis ip 端口 1
sentinel auth-pass myredis 密码
cp /redis/node-1/conf/sentinel.conf /redis/node-2/conf/sentinel.conf
cp /redis/node-1/conf/sentinel.conf /redis/node-3/conf/sentinel.conf

docker-compose up -d启动

测试

docker stop redis-master

192.168.1.184:6380> info replication
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.1.184,port=6381,state=online,offset=88456,lag=0
master_replid:fa561c3a547f3e3ad994fb933222529295e82210
master_replid2:12478db5509bec9883cd021de59e230b2372080d
master_repl_offset:88456
second_repl_offset:1592
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:88456