环境介绍
- os： centos 6.4 x64位系统
- master: 192.168.1.83
- slave: 192.168.1.84
两台机器安装redis
安装redis组件tcl
# yum install tcl-devel.x86_64 tcl.x86_64 gcc
安装redis
# tar zxvf redis-3.0.2.tar.gz
# make PREFIX=/usr/local/redis install
# make MALLOC=libc #若报错执行
生成配置
# /root/soft/redis-3.0.2/utils/install_server.sh
# vim /etc/redis/6379.conf # 修改
daemonize yestimeout 500
logfile /data/redis/6379/log/redis_6379.log
dir /data/redis/6379/data
创建目录
# mkdir /data/redis/6379/{data,log} -p
启动命令
# ln -s /usr/local/redis/bin/* /usr/bin/# mv /etc/init.d/redis_6379 /etc/init.d/redis
启动redis
# service redis start
查看端口
# netstat -tunpl|grep redis
slave服务器配置修改
# vim /etc/redis/6379.conf
在以下位置添加一行
# slaveof
slaveof 192.168.1.83 6379
重启redis
# service redis restart
查看端口
# netstat -tunpl|grep redis
测试主机数据同步
在master主机写入key
[root@localhost redis]# redis-cli
127.0.0.1:6379> set name zheng
OK
127.0.0.1:6379> keys *
1) "name"
在slave主机查看key
[root@localhost conf]# redis-cli
127.0.0.1:6379> keys *
1) "name"
127.0.0.1:6379>set name zheng #默认是读写分离的
(error) READONLY You can't write against a read only slave.
####主从切换
1.停止master
[root@localhost redis]# service redis stop
Stopping ...
Redis stopped
[root@localhost redis]# redis-cli
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-cli -p 6379 slaveof NO ONE
OK
3.测试从redis是否切换从主redis
[root@localhost ~]# redis-cli
127.0.0.1:6379> set name zhengfuqiang
OK
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-cli
127.0.0.1:6379> set name zhengfuqiang
OK
127.0.0.1:6379> set age 24
OK
127.0.0.1:6379> set email zheng@qq.com
OK
127.0.0.1:6379> save
OK
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
# scp /data/redis/6379/data/dump.rdb root@192.168.1.83:/data/redis/6379/data/
启动原来的master
[root@localhost data]# service redis start
Starting Redis server...
[root@localhost data]# redis-cli
127.0.0.1:6379> keys *
1) "pass"
2) "name"
3) "age"
127.0.0.1:6379>
[root@localhost data]# redis-cli slaveof 192.168.1.83 6379#在slave切换
OK
[root@localhost data]# redis-cli
127.0.0.1:6379> keys *
1) "name"
2) "pass"
3) "age"
4) "email"
zheng