Centos7使用docker快速安装redis（一主一从一哨）

雨点打透心脏的1/2处 2024-04-17 05:27 12阅读 0赞

# 一、拉取镜像及创建挂载文件 #

#拉取redis镜像
    docker pull redis:3.2
    #用于挂载redis、sentinel数据文件（这里是单机）
    mkdir -p /docker/redis/redis-6379/data
    mkdir -p /docker/redis/redis-6380/data
    #创建redis.conf master配置文件
    vi /docker/redis/redis-6379/redis.conf
    
    port 6379
    logfile "redis.log"
    dir /data
    appendonly yes
    appendfilename appendonly.aof
    masterauth 123456
    requirepass 123456
    
    #创建redis.conf slave配置文件
    vi /docker/redis/redis-6380/redis.conf
    
    port 6380
    logfile "redis.log"
    dir /data
    appendonly yes
    appendfilename appendonly.aof
    slaveof 192.168.21.204 6379
    masterauth 123456
    requirepass 123456
    
    #dir：工作目录
    #logfile：日志文件在工作目录下
    #slaveof：指明为主机一的从机
    #requirepass：redis客户端连接的认证密码，若不需要可不配置
    #masterauth：主从redis同步的认证密码，与连接密码同，若不需要可不用配置
    #appendonly：是否需要持久化，yes为需要
    
    #创建哨兵
    mkdir -p /docker/redis/sentinel-26380/data
    vi /docker/redis/sentinel-26380/sentinel.conf
    
    port 26380
    logfile "sentinel.log"
    dir /data
    sentinel monitor mymaster 192.168.21.204 6379 1
    # master节点发送ping命令，如果超过times毫秒没有收到回复，则判定该节点不可达
    sentinel down-after-milliseconds mymaster 30000
    # 主机挂了,从节点想主机发起复制数
    sentinel parallel-syncs mymaster 1
    # 故障转移的超时时间
    sentinel failover-timeout mymaster 180000
    sentinel auth-pass mymaster 123456

# 二、启动容器 #

## 1、在/docker/redis/redis-6379/下创建docker-compose.yml文件 ##

vi /docker/redis/redis-6379/docker-compose.yml
    
    version: '3.5'
    services:
      master:
        image: redis:3.2
        container_name: redis-master-6379
        restart: always
        network_mode: "host"
        command: redis-server /etc/redis/redis.conf
        ports:
          - 6379:6379
        volumes:
          - /docker/redis/redis-6379/data:/data
          - /docker/redis/redis-6379/redis.conf:/etc/redis/redis.conf

<table> 
 <tbody> 
  <tr> 
   <td>&nbsp;名词</td> 
   <td>&nbsp;描述</td> 
  </tr> 
  <tr> 
   <td>&nbsp;version</td> 
   <td>&nbsp;docker文件的版本</td> 
  </tr> 
  <tr> 
   <td>&nbsp;image</td> 
   <td>&nbsp;指定容器镜像就是之前拉取的redis镜像</td> 
  </tr> 
  <tr> 
   <td>&nbsp;container_name</td> 
   <td>&nbsp;给这个镜像起一个别名</td> 
  </tr> 
  <tr> 
   <td>&nbsp;restart</td> 
   <td>&nbsp;always:表名开机自启动</td> 
  </tr> 
  <tr> 
   <td>&nbsp;command</td> 
   <td>&nbsp;相当于执行一些命令&nbsp; &nbsp;(--requirepass 指定redis密码&nbsp; --appendonly yes 这个命令是用于开启redis数据持久化)</td> 
  </tr> 
  <tr> 
   <td>&nbsp;ports</td> 
   <td>&nbsp;端口映射,将容器的端口映射到对应宿主机的端口</td> 
  </tr> 
  <tr> 
   <td>&nbsp;volumes</td> 
   <td> <p>&nbsp;数据卷的映射.因为一旦容器停止了那么里面的数据也没有.所以我们需要把这个数据文件放在外面,然后映射到容器中</p> </td> 
  </tr> 
 </tbody> 
</table>

##  ##

## 2、在/docker/redis/redis-6380/下创建docker-compose.yml文件 ##

vi /docker/redis/redis-6380/docker-compose.yml
    
    version: '3.5'
    services:
      slave:
        image: redis:3.2
        container_name: redis-slave-6380
        restart: always
        network_mode: "host"
        command: redis-server /etc/redis/redis.conf
        ports:
          - 6380:6380
        volumes:
          - /docker/redis/redis-6380/data:/data
          - /docker/redis/redis-6380/redis.conf:/etc/redis/redis.conf

## 2、通过docker-compose分别启动主从容器 ##

#创建容器并启动服务
    docker-compose up -d
    #停止服务并删除容器
    docker-compose down
    #查看服务启动日志
    docker logs -f 容器Id

## 3、验证主从 ##

#进入master redis容器
    docker exec -it 容器Id bash
    
    #验证master
    root@505789210a7f:/data# redis-cli 
    127.0.0.1:6379> info
    NOAUTH Authentication required.
    127.0.0.1:6379> auth 123456
    OK
    127.0.0.1:6379> set name test
    OK
    127.0.0.1:6379> get name
    "test"
    127.0.0.1:6379>
    
    #验证slave
    root@2357840a7f23:/data# redis-cli 
    127.0.0.1:6380> info
    NOAUTH Authentication required.
    127.0.0.1:6380> auth 123456
    OK
    127.0.0.1:6380> get name
    "test"
    127.0.0.1:6380>

## `三、哨兵模式` ##

vi /docker/redis/sentinel-26380/docker-compose.yml
    
    version: '3.5'
    services:
      sentinel:
        image: redis:3.2
        container_name: redis-sentinel
        command: redis-sentinel /usr/local/etc/redis/sentinel.conf
        restart: always
        network_mode: "host"
        ports:
          - 26380:26380
        volumes:
          - /docker/redis/sentinel-26380/data:/data
          - /docker/redis/sentinel-26380/sentinel.conf:/usr/local/etc/redis/sentinel.conf