Redis教程

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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