本机搭建Redis主从哨兵

本机Redis搭建主从哨兵

搭建主从

• 先下载Redis服务

  1. 由于我是Mac所以安装命令brew install redis

  Updating Homebrew...
  ==> Auto-updated Homebrew!
  Updated 1 tap (homebrew/services).
  No changes to formulae.
  
  Warning: Treating redis as a formula. For the cask, use homebrew/cask/redis
  ==> Downloading https://mirrors.ustc.edu.cn/homebrew-bottles/bottles/redis-6.2.1.catalina.bottle.tar.gz
  ######################################################################## 100.0%
  ==> Pouring redis-6.2.1.catalina.bottle.tar.gz
  ==> Caveats
  To have launchd start redis now and restart at login:
    brew services start redis
  Or, if you don't want/need a background service you can just run:
    redis-server /usr/local/etc/redis.conf
  ==> Summary
  🍺  /usr/local/Cellar/redis/6.2.1: 13 files, 2.0MB
  

• 复制出来两个从Redis.conf配置文件

  1. cd /usr/local/etc
  2. mkdir redis
  3. cp redis.conf redis/redis_6380.conf
  4. cp redis.conf redis/redis_6381.conf
  5. 修改 redis_6380.conf,和redis_6381.conf文件的端口号分别为6380和6381
  

• 修改redis_6380.conf和redis_6381.conf 两个配置文件的replicaof <masterip> <masterport>配置

  replicaof 127.0.0.1 6379
  

• 新开三个窗口,并进入可执行目录下面cd /usr/local/Cellar/redis/6.2.1/bin

  1. redis-server /usr/local/etc/redis.conf
  2. redis-server /usr/local/etc/redis/redis_6380.conf
  3. redis-server /usr/local/etc/redis/redis_6381.conf
  

  
  当看到上面的输出信息时,则说明已成功

• 在Redis master服务上执行命令如下,

  1. 
  2. 
  3. 
     当看到上面信息的时候,则说明主从搭建成功并已成功通信

• 可以执行如下命令查看主从信息info Replication
  
  

搭建哨兵

• 复制 哨兵 redis-sentinel.conf 配置文件

  1. cd /usr/local/etc
  2. cp redis-sentinel.conf redis/redis-sentinel-26380.conf
  3. cp redis-sentinel.conf redis/redis-sentinel-26381.conf
  4. 修改 redis-sentinel-26380.conf,和redis-sentinel-26381.conf文件的端口号分别为26380和26381
  

• 分别修改相对应的哨兵配置文件

  1. redis-sentinel.conf

     protected-mode no 
     port 26379
     sentinel monitor mymaster 127.0.0.1 6379 2 
     pidfile /var/run/redis-sentinel-26379.pid
     sentinel down-after-milliseconds mymaster 10000 
     sentinel parallel-syncs mymaster 1
     sentinel failover-timeout mymaster 60000
     

  2. redis-sentinel-26380.conf

     protected-mode no 
     port 26380
     sentinel monitor mymaster 127.0.0.1 6379 2 
     pidfile /var/run/redis-sentinel-26380.pid
     sentinel down-after-milliseconds mymaster 10000 
     sentinel parallel-syncs mymaster 1
     sentinel failover-timeout mymaster 60000
     

  3. redis-sentinel-26381.conf

     protected-mode no 
     port 26381
     sentinel monitor mymaster 127.0.0.1 6379 2 
     pidfile /var/run/redis-sentinel-26381.pid
     sentinel down-after-milliseconds mymaster 10000 
     sentinel parallel-syncs mymaster 1
     sentinel failover-timeout mymaster 60000
     

• 启动相对应的哨兵

  redis-sentinel /usr/local/etc/redis-sentinel.conf
  redis-sentinel /usr/local/etc/redis/redis-sentinel-26380.conf
  redis-sentinel /usr/local/etc/redis/redis-sentinel-26381.conf
  

  这时候查看主从信息还是原来的
  

  这时候查看哨兵的信息
  

• 模拟Redis master主服务挂掉后的
  

  1. 这时候查看Redis主从信息已经发生了变化
     

  2. 此时把6379端口的Redis服务起来后,再端口号为6380的客户端再次查看信息
     

  3. 此时再去6379的客户端再次查看信息时,发现该端口下的Redis服务已经降级为从服务
     

这个时候 Redis主从哨兵已经搭建完成!