Docker下配置redis主从复制详细过程

女爷i 2022-02-28 15:14 296阅读 0赞

# Docker下配置redis主从复制详细过程 #

2019年03月19日 16:00:37 [累了困了喝六神][Link 1] 阅读数：116 标签： [redis主从 ][redis_][docker ][docker][docker搭建redis ][docker_redis][docker-redis ][docker-redis] 更多

个人分类： [学习笔记 ][Link 2]

环境

*  同一宿主机两个docker容器，请提前安装好docker
 *  master：172.17.0.2
 *  slave：172.17.0.3

配置redis.conf

[root@server1 ~]# tar zxf redis-4.0.8.tar.gz
    [root@server1 ~]# cd redis-4.0.8/
    [root@server1 ~]# mkdir -p /mnt/redis/conf.d
    [root@server1 ~]# cp redis.conf /mnt/redis/conf.d/redis-master.conf
    [root@server1 ~]# cp redis.conf /mnt/redis/conf.d/redis-slave.conf

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*  **主节点 redis-master.conf**
    
        [root@server1 ~]# cd /mnt/redis/conf.d/
        vim redis-master.conf
          69 bind 0.0.0.0                                 # 连接开放
          88 protected-mode no                            # 保护模式关闭 
         136 daemonize yes                                # 服务后台运行  
         814 cluster-enabled yes
         822 cluster-config-file nodes-6379.conf
         827 cluster-node-timeout 15000
    
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 *  **从节点 redis-slave.conf**
    
        [root@server1 conf.d]# vim redis-slave.conf
          69 bind 0.0.0.0                                 # 连接开放
          88 protected-mode no                            # 保护模式关闭 
         136 daemonize yes                                # 服务后台运行
    
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redis-master容器搭建

*  **获取镜像，创建容器**
    
        [root@server1 ~]# docker pull redis
        [root@swarm1 conf.d]# docker run -it --name redis-master -v /mnt/redis/conf.d/redis-master.conf:/usr/local/etc/redis/redis.conf -d -p 6300:6379 redis /bin/bash
        [root@swarm1 conf.d]# docker inspect redis-master | grep IPA   # 挂载.conf文件，宿主机端口6300
              "SecondaryIPAddresses": null,
              "IPAddress": "172.17.0.2",
                      "IPAMConfig": null,
                      "IPAddress": "172.17.0.2",
        [root@swarm1 conf.d]# docker attach redis-master
        root@077db232f8b1:/data# redis-server /usr/local/etc/redis/redis.conf
        root@077db232f8b1:/data# redis-cli
        127.0.0.1:6379> info replication
        # Replication
        role:master
        connected_slaves:0
 *  **redis-master写入数据时报错：（error）CLUSTERDOWN Hash slot not served”**  
    ![在这里插入图片描述][2019031912122947.]  
    原因： 运行容器时挂载的 /mnt/redis/conf.d/redis-master.conf 文件中开启了cluster-enable，注释该内容后重新运行容器
    
        [root@server1 ~]# cd /mnt/redis/conf.d/
        [root@server1 conf.d]# vim redis-master.conf
         814 #cluster-enabled yes
        [root@swarm1 conf.d]# docker run -it --name redis-master -v /mnt/redis/conf.d/redis-master.conf:/usr/local/etc/redis/redis.conf -d -p 6300:6379 redis /bin/bash
        077db232f8b1d257185190e7f21b694e8db8df0ba9ccf497d82bfe5ebf08bad3
        [root@swarm1 conf.d]# docker attach redis-master 
        root@077db232f8b1:/data# redis-server /usr/local/etc/redis/redis.conf
        root@077db232f8b1:/data# redis-cli
        127.0.0.1:6379> set new old                           # 测试数据创建成功
        OK

redis-slave容器搭建

*  **容器创建**
    
        [root@swarm1 conf.d]# docker run -it --name redis-slave -v /mnt/redis/conf.d/redis-slave.conf:/usr/local/etc/redis/redis.conf -d -p 6301:6379 redis /bin/bash
        [root@swarm1 conf.d]# docker inspect redis-slave | grep IPA
              "SecondaryIPAddresses": null,
              "IPAddress": "172.17.0.3",
                      "IPAMConfig": null,
                      "IPAddress": "172.17.0.3",
        [root@swarm1 conf.d]# docker attach redis-master
        root@077db232f8b1:/data# redis-server /usr/local/etc/redis/redis.conf
        root@574c798128ee:/data# redis-cli
        127.0.0.1:6379> slaveof 172.17.0.2 6379              # 链接到master节点，因同一宿主机中的容器通过docker0进行网络
        OK                                                   # 通信，即就相当于同属于一个子网中，所以直接连接容器内服务端口
        127.0.0.1:6379> info replication
        # Replication
        role:slave                                    # 该容器redis服务为从节点
        master_host:172.17.0.2                        # 主节点 
        master_port:6300
        master_link_status:down
 *  **主节点查看**
    
        127.0.0.1:6379> info replication
        # Replication
        role:master
        connected_slaves:1
        slave0:ip=172.17.0.3,port=6379,state=online,offset=28,lag=1             # slave容器ip
        127.0.0.1:6379> get new                              # 测试数据成功 
        "old"

[Link 1]: https://me.csdn.net/qq_35197351
[redis_]: http://so.csdn.net/so/search/s.do?q=redis%E4%B8%BB%E4%BB%8E&t=blog
[docker]: http://so.csdn.net/so/search/s.do?q=docker&t=blog
[docker_redis]: http://so.csdn.net/so/search/s.do?q=docker%E6%90%AD%E5%BB%BAredis&t=blog
[docker-redis]: http://so.csdn.net/so/search/s.do?q=docker-redis&t=blog
[Link 2]: https://blog.csdn.net/qq_35197351/article/category/8080573
[2019031912122947.]: /images/20220228/2f1b1184b44f4a8ebb8d9a5f063d9fb9.png