redis主从配置

      主redis： （路径根据实际情况来写）     

      [root@localhost redis]# src/redis-server  /opt/redis-3.0.5/conf/redis.conf

     从redis：

     [root@localhost redis]# src/redis-server /opt/redis-3.0.5/conf/redis.conf

      主redis：

      [root@localhost redis-2.8.3]# src/redis-cli -p 6379
       127.0.0.1:6379> set name abc
       OK
       127.0.0.1:6379> get name
       "abc"
       127.0.0.1:6379>

    从redis：

      [root@localhost redis-2.8.3]# src/redis-cli -p 6379
       127.0.0.1:6379> get name
       "abc"
       127.0.0.1:6379>

在从redis：

[root@localhost redis-2.8.3]# src/redis-cli -p 6379
127.0.0.1:6379> set name 123
(error) READONLY You can't write against a read only slave.

 1、停止主redis

     [root@localhost redis-3.0.5]# src/redis-cli -n 6379 shutdown
     [root@localhost redis-3.0.5]# src/redis-cli -p 6379
     Could not connect to Redis at 127.0.0.1:6379: Connection refused
     not connected>

 2、将从redis设成主redis
     [root@localhost redis-3.0.5]# src/redis-cli -p 6379 slaveof NO ONE
     OK

 3、测试从redis是否切换从主redis

     [root@localhost redis-3.0.5]# src/redis-cli -p 6379
     127.0.0.1:6379> set name 123
     OK
     127.0.0.1:6379> get name
     "123"
     127.0.0.1:6379>

 4、原来的主redis恢复正常了，要重新切换回去

      1）将现在的主redis的数据进行保存
     [root@localhost redis-3.0.5]# src/redis-cli -p 6379
     127.0.0.1:6379> get name
     "abc"
     127.0.0.1:6379> set name 123
     OK
     127.0.0.1:6379> get name
     "123"
     127.0.0.1:6379> save
     OK
     127.0.0.1:6379> get name
     "123"
     127.0.0.1:6379>  

       2）将现在的主redis根目录下dump.rdb文件拷贝覆盖到原来主redis的根目录

       3）启动原来的主redis

      [root@localhost redis-3.0.5]# src/redis-server /soft/redis-3.0.5-master/redis-3.0.5/redis.conf
       4）在现在的主redis中切换

      [root@localhost redis-3.0.5]# src/redis-cli -p 6379 slaveof 192.168.10.1 6379
      OK