Redis 一主两从三哨兵

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1. 安装redis相关依赖

   yum install gcc gcc-c++ automake autoconf libtool make -y

2. 下载redis

   wget https://download.redis.io/releases/redis-4.0.14.tar.gz

3. 解压redis

   tar -zxvg redis-4.0.14.tar.gz

4. 进入redis目录编译并安装

   cd /data/redis-4.0.14
   make && make install 

5. 修改redis配置文件

   daemonize yes
   #pidfile "/home/redis/redis/redisRun/redis_6379.pid"
   port 6379
   timeout 0
   tcp-keepalive 0
   loglevel notice
   logfile "/var/log/redis/redis.log"
   databases 16
   save 900 1
   save 300 10
   save 60 10000
   stop-writes-on-bgsave-error yes
   rdbcompression yes
   rdbchecksum yes
   dbfilename "dump.rdb"
   #dir "/home/redis/redisdb"
   #主节点密码
   masterauth "Pw!123456"
   slave-serve-stale-data yes
   slave-read-only yes
   repl-disable-tcp-nodelay no
   slave-priority 102
   requirepass "Pw!123456"
   appendonly yes
   # appendfsync always
   appendfsync everysec
   # appendfsync no
   no-appendfsync-on-rewrite no
   auto-aof-rewrite-percentage 100
   auto-aof-rewrite-min-size 64mb
   lua-time-limit 5000
   slowlog-log-slower-than 10000
   slowlog-max-len 128
   notify-keyspace-events ""
   hash-max-ziplist-entries 512
   hash-max-ziplist-value 64
   list-max-ziplist-entries 512
   list-max-ziplist-value 64
   set-max-intset-entries 512
   zset-max-ziplist-entries 128
   zset-max-ziplist-value 64
   activerehashing yes

6. 配置redis自启服务文件

   vi /etc/systemd/system/redis.service
   ​
   [Unit]
   ​
   Description=redis-server
   ​
   After=network.target
   ​
   [Service]
   ​
   Type=forking
   ​
   ExecStart=/data/redis-4.0.14/bin/redis-server /data/redis-4.0.14/redis.conf
   ​
   PrivateTmp=true
   ​
   [Install]
   ​
   WantedBy=multi-user.targe

7. 设置redis开机自启

   重载配置：systemctl daemon-reload
   ​
   启动服务：systemctl start redis.service
   ​
   添加开机自启：systemctl enable redis.service
   ​
   查看服务状态1）：systemctl status redis.service
   ​
   查看服务状态2)：ps -ef|grep redis

8. 开放端口限制

   firewall-cmd --zone=public --add-port=6379/tcp --permanent
   ​
   生效配置：firewall-cmd --reload

9. 其他2台从机器以上步骤一致

10. 修改哨兵配置文件(sentinel.conf)

    port 26379
    bind 0.0.0.0
    daemonize yes
    sentinel myid 533c6dcc3deb4975df2813da6bb5e7e4c6dcb6d3
    sentinel deny-scripts-reconfig yes
    sentinel monitor mymaster 192.168.0.103 6379 2
    sentinel down-after-milliseconds mymaster 5000
    sentinel failover-timeout mymaster 60000
    logfile "/var/log/redis/sentinel.log"
    # Generated by CONFIG REWRITE
    dir "/data/redis-4.0.14"
    sentinel auth-pass mymaster Pw!123456
    sentinel config-epoch mymaster 4
    sentinel leader-epoch mymaster 3
    sentinel known-slave mymaster 192.168.0.104 6379
    sentinel known-slave mymaster 192.168.0.102 6379
    sentinel known-sentinel mymaster 192.168.0.104 26379 0339c0dc9ae30bb0fde907f67ce707d602fdc97f
    sentinel known-sentinel mymaster 192.168.0.103 26379 ee5430bb33d99dc23598320a07e94e8658a8f6a4
    sentinel current-epoch 4

11. 开放哨兵端口限制

    firewall-cmd --zone=public --add-port=26379/tcp --permanent
    ​
    生效配置：firewall-cmd --reload

12. 配置哨兵自启

    vi /etc/systemd/system/redis-sentinel.service
    ​
    ​
    [Unit]
    ​
    Description=redis-sentinel-server
    ​
    After=redis-server
    ​
    [Service]
    ​
    Type=forking
    ​
    ExecStart=/data/redis-4.0.14/bin/redis-server /data/redis-4.0.14/sentinel.conf --sentinel
    ​
    PrivateTmp=true
    ​
    [Install]
    ​
    WantedBy=multi-user.target

13. 设置redis-sentinel开机自启

    重载配置：systemctl daemon-reload
    ​
    启动服务：systemctl start redis-sentinel.service
    ​
    添加开机自启：systemctl enable redis-sentinel.service
    ​
    查看服务状态1）：systemctl status redis-sentinel.service
    ​
    查看服务状态2)：ps -ef|grep redis

14. 启动redis和哨兵

    任意一台机器
    redis-cli -p 6379
    auth redis密码
    info #查看信息 是否是主从模式
    ​
    宕机master后是否重新选举master

15.  

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