redis主从配置及主从切换

环境描述:

主redis:192.168.10.1 6379
从redis:192.168.10.2 6380

一、主从配置

1、将主从redis配置文件redis.conf中的aemonize no 改为 yes

2、修改从redis配置文件redis.conf中的port 6379 改为 6380,添加slaveof 192.168.10.1 6379

3、启动主从服务

主redis:

[root@localhost redis-2.8.3]# src/redis-server /soft/redis-2.8.3-master/redis-2.8.3/redis.conf

 从redis:

 [root@localhost redis-2.8.3]# src/redis-server /soft/redis-2.8.3-slave/redis-2.8.3/redis.conf

4、测试数据同步

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 6380
127.0.0.1:6380> get name
"abc"
127.0.0.1:6380>

5、默认是读写分离的

在从redis:

[root@localhost redis-2.8.3]# src/redis-cli -p 6380
127.0.0.1:6380> set name 123
(error) READONLY You can't write against a read only slave.

二、主从切换

1、停止主redis

[root@localhost redis-2.8.3]# src/redis-cli -n 6379 shutdown
[root@localhost redis-2.8.3]# 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-2.8.3]# src/redis-cli -p 6380 slaveof NO ONE
OK

3、测试从redis是否切换从主redis

[root@localhost redis-2.8.3]# src/redis-cli -p 6380
127.0.0.1:6380> set name 123
OK
127.0.0.1:6380> get name
"123"
127.0.0.1:6380>

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-2.8.3]# src/redis-cli -p 6380
127.0.0.1:6380> get name
"abc"
127.0.0.1:6380> set name 123
OK
127.0.0.1:6380> get name
"123"
127.0.0.1:6380> save
OK
127.0.0.1:6380> get name
"123"
127.0.0.1:6380>  

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-2.8.3]# src/redis-server /soft/redis-2.8.3-master/redis-2.8.3/redis.conf

4)在现在的主redis中切换

[root@localhost redis-2.8.3]# src/redis-cli -p 6380 slaveof 192.168.10.1 6379
OK

本文转自:http://blog.csdn.net/zfl092005/article/details/17523945

posted @ 2016-08-05 14:16  彼岸的命運╰'  阅读(228)  评论(0编辑  收藏  举报