Redis Sentinel

環境

主機名	地址	操作系統	初始狀態
sentinel86	10.1.14.86	CentOS7.4	null
redis87	10.1.14.87	CentOS7.4	master
redis88	10.1.14.88	CentOS7.4	slave
redis89	10.1.14.89	CentOS7.4	slave

安裝 redis

• 在全部服務器上安裝 redis

  yum install epel-release
  yum install redis
  

redis master 配置

• 在 redis87 上修改 /etc/redis.conf

  bind 0.0.0.0
  

redis slave 配置

• 在 redis88 和 redis89 上修改 /etc/redis.conf

  bind 0.0.0.0
  slaveof 10.1.14.87 6379
  

redis sentinel 配置

• 在 sentinel86 上創建三個 sentinel 配置文件

  cd /etc/
  cp redis-sentinel.conf redis-sentinel-16379.conf
  cp redis-sentinel.conf redis-sentinel-26379.conf
  mv redis-sentinel.conf redis-sentinel-36379.conf
  chown redis.root redis-sentinel-?6379.conf
  

• 修改 /etc/redis-sentinel-16379.conf

  bind 0.0.0.0
  port 16379
  dir /var/log/redis/16379
  sentinel monitor mymaster 10.1.14.87 6379 2
  sentinel down-after-milliseconds mymaster 8000
  logfile /var/log/redis/16379/sentinel.log
  

• 修改 /etc/redis-sentinel-26379.conf

  bind 0.0.0.0
  port 26379
  dir /var/log/redis/26379
  sentinel monitor mymaster 10.1.14.87 6379 2
  sentinel down-after-milliseconds mymaster 8000
  logfile /var/log/redis/26379/sentinel.log
  

• 修改 /etc/redis-sentinel-36379.conf

  bind 0.0.0.0
  port 36379
  dir /var/log/redis/36379
  sentinel monitor mymaster 10.1.14.87 6379 2
  sentinel down-after-milliseconds mymaster 8000
  logfile /var/log/redis/36379/sentinel.log
  

• 創建日誌目錄

  cd /var/log/redis/
  mkdir 16379 26379 36379
  chown redis.redis ?6379 -R
  

• 創建兩個 sentinel service 文件

  cd /usr/lib/systemd/system/
  cp redis-sentinel.service redis-sentinel-16379.service
  cp redis-sentinel.service redis-sentinel-26379.service
  mv redis-sentinel.service redis-sentinel-36379.service
  

• 修改 /usr/lib/systemd/system/redis-sentinel-16379.service

  ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-16379.conf --daemonize no
  ExecStop=/usr/libexec/redis-shutdown redis-sentinel-16379
  

• 修改 /usr/lib/systemd/system/redis-sentinel-26379.service

  ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-26379.conf --daemonize no
  ExecStop=/usr/libexec/redis-shutdown redis-sentinel-26379
  

• 修改 /usr/lib/systemd/system/redis-sentinel-36379.service

  ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-36379.conf --daemonize no
  ExecStop=/usr/libexec/redis-shutdown redis-sentinel-36379
  

• 更新服務

  systemctl daemon-reload
  

啓動 redis 服務

• 在 redis87、redis88 和 redis89 上啓動 redis 服務

  systemctl start redis
  # 查看當前節點主從信息
  redis-cli info replication
  

啓動 redis sentinel 監控

• 在 sentinel86 上啓動 sentinel 監管程序

  systemctl start redis-sentinel-16379
  systemctl start redis-sentinel-26379
  systemctl start redis-sentinel-36379