redis 哨兵机制环境搭建

Redis哨兵机制,一主二从

注:Redis哨兵切换,建议一主多从

一、一主二从

  教程步骤:https://www.cnblogs.com/zwcry/p/9046207.html

二、哨兵配置(sentinel.conf)

  cd /usr/local/redis-ms/  

  1.创建哨兵目录

    mkdir -p ./sentinel/26001/tmp

    cp /usr/local/redis/sentinel.conf ./sentinel/26001/

  2.修改./sentinel/.conf

    cd /usr/local/redis-ms/sentinel/

    vim ./26001/sentinel.conf

    #修改如下键值对

    # bind 127.0.0.1 192.168.1.1#注释掉或者值为0.0.0.0

    protected-mode no#关闭保护模式

    port 26001#端口号

    daemonize yes#后台运行

    dir /usr/local/redis-ms/sentinel/26001/tmp#解除挂载信息目录

    sentinel monitor mymaster 192.168.194.131 6381 1#设置 主名称 ip地址 端口号 参入选举的哨兵数

    sentinel down-after-milliseconds mymaster 3000#sentinel心跳检测主3秒内无响应,视为挂掉,开始切换其他从为主

    sentinel parallel-syncs mymaster 1#每次最多可以有1个从同步主。一个从同步结束,另一个从开始同步。

    sentinel failover-timeout mymaster 18000#主从切换超时时间

三、启动哨兵配置

  1.先启主从redis

    /usr/local/redis/src/redis-server /usr/local/redis-ms/6381/redis.conf

    /usr/local/redis/src/redis-server /usr/local/redis-ms/6382/redis.conf

    /usr/local/redis/src/redis-server /usr/local/redis-ms/6383/redis.conf

    ps -ef|grep redis

    如图已经启动

    

    且信息正确

    /usr/local/redis/src/redis-cli -p 6381

    info

    

   2.启动哨兵

    /usr/local/redis/src/redis-sentinel /usr/local/redis-ms/sentinel/26001/sentinel.conf 

    ps -ef|grep redis

    如图已经启动

    

    且信息正确

    /usr/local/redis/src/redis-cli -p 26001

    info

     

  3.测试

    1)主6381停掉后变成从,原有的两个从,有一个升级为主。

      /usr/local/redis/src/redis-cli -p 6381 shutdown

      /usr/local/redis/src/redis-cli -p 26001

      info

      

    2)6381再次启动后,依然是从

      /usr/local/redis/src/redis-server /usr/local/redis-ms/6381/redis.conf

      /usr/local/redis/src/redis-cli -p 6381

      info

      

五、哨兵集群

  cd /usr/local/redis-ms/sentinel/

  1.复制26001

    cp -r 26001 26002

  2.修改26002/sentinel.conf

    vim 26002/sentinel.conf

    #将文本中26001替换为26002

    :%s/26001/26002/g

  3.启动

    /usr/local/redis/src/redis-sentinel /usr/local/redis-ms/sentinel/26002/sentinel.conf

    info

    /usr/local/redis/src/redis-cli -p 26002

    

 

6.哨兵开机启动

  注:redis开机启动参照https://www.cnblogs.com/zwcry/p/9046207.html  

  1.创建sh脚本目录

    mkdir /usr/local/redis-ms/sentinel/script

    cd /usr/local/redis-ms/sentinel/script/

  2.编辑start.sh

    vim start.sh   

#!/bin/sh
/usr/local/redis/src/redis-sentinel /usr/local/redis-ms/sentinel/26001/sentinel.conf
/usr/local/redis/src/redis-sentinel /usr/local/redis-ms/sentinel/26002/sentinel.conf

  3.编辑stop.sh

    vim stop.sh

#!/bin/sh
/usr/local/redis/src/redis-cli -p 26001 shutdown
/usr/local/redis/src/redis-cli -p 26002 shutdown

  4.编辑restart.sh

    vim restart.sh   

#!/bin/sh
systemctl stop redis-sentinel
systemctl start redis-sentinel

  5.编写redis-sentinel.service

    cd /usr/lib/systemd/system/

    vim redis-sentinel.service

[Unit]
Description=redis-sentinel
After=redis-ms.service
[Service]
Type=forking
ExecStart=/usr/local/redis-ms/sentinel/script/start.sh
ExecStop=/usr/local/redis-ms/sentinel/script/stop.sh
ExecReload=/usr/local/redis-ms/sentinel/script/restart.sh
[Install]
WantedBy=multi-user.target

    #建议启动redis服务后,再启动哨兵  

  6.命令行

    改变权限

      chmod 777 redis-sentinel.service

      chmod 777 /usr/local/redis-ms/sentinel/script/*

    进程服务重加载

      systemctl daemon-reload

    开机启动哨兵

      systemctl enable redis-sentinel.service

    启动哨兵

      systemctl start redis-sentinel.service

    关闭哨兵

      systemctl stop redis-sentinel.service

    重启哨兵

      systemctl restart redis-sentinel.service

备注:哨兵集群服务自主关联响应,如果需要更多哨兵集群,按照26002的方式复制26003...26006即可

  
  

    

posted @ 2018-06-04 18:02  七脉  阅读(16171)  评论(0编辑  收藏  举报