memcache 主从配置

吴贺华

　　Rehat 6.0  server 版本配置memcahed 主从关系
　　据说: memcached配置主从关系,必须得用repcached 版本或repcached插件 !
　　下载地址: http://sourceforge.net/projects/repcached/files/repcached/
　　下载memcache 2.21-1.2.8-replication2.2.1.tar.gz 带插件的版本
　　安装此版本的memcached 必须有libevent支持
　　下载libevent-1.4.10-stable.tar.gz   切勿最新版本(可能会有replicarion-service错误!)
　　下载地址:https://github.com/downloads/libevent/libevent/libevent-1.4.10-stable.tar.gz 
　　安装 libevent:

[iyunv@admin tars]# tar -zxvf libevent-1.4.10-stable.tar.gz  
[iyunv@admin tars]# cd libevent-1.4.10-stable  
[iyunv@admin libevent-1.4.10-stable]# ./configure --prefix=/usr/local/libevent  
[iyunv@admin libevent-1.4.10-stable]# make && make install
[iyunv@admin libevent-1.4.10-stable]# cp /usr/local/libevent/lib/libevent-1.4.so.2 /usr/lib/
　　 PS:必须把 libevent-1.4.so.2 复制到/usr/lib 目录下 否则安装memcached会报错!
　　安装 memcached

[iyunv@admin tars]# tar -xzfv memcached-1.2.8.tar.gz -C /usr/local/     
[iyunv@admin local]# cd /usr/local
[iyunv@admin local]# mv memcached-1.2.8 memcached
[iyunv@admin local]# cd memcached
[iyunv@admin memcached]# ./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/libevent --enable-replication
[iyunv@admin memcached]# make && make install
　　按同样的方式安装到例外一台机器上.
　　启动memcached:
　　在172.19.121.125上执行

[iyunv@admin memcached]# ./memcached -d -m 256 -x 172.19.121.162 -u root -p 11211 -v
[iyunv@y162 memcached]# replication: connect (peer=172.19.121.162:11212)
replication: marugoto copying
　　在172.19.121.162上执行

[iyunv@y162 memcached]# ./memcached -d -m 256 -x 172.19.121.125 -u root -p 11211 -v
[iyunv@y162 memcached]# replication: connect (peer=172.19.121.125:11212)
replication: marugoto copying
　　测试:

[iyunv@y162 ~]# telnet 172.19.121.162 11211
Trying 172.19.121.162...
Connected to 172.19.121.162.
Escape character is '^]'.
set usetid 0 0 6
123456
STORED
get usetid
VALUE usetid 0 6
123456
END
　　查看172.19.121.125 上的memcached

[iyunv@admin ~]# telnet 172.19.121.125 11211
Trying 172.19.121.125...
Connected to 172.19.121.125.
Escape character is '^]'.
get usetid
VALUE usetid 0 6
123456
END

　　至此memcached 主从配置完成。
　　若telnet 命令不可用,可使用yum命令安装： yum telnet install
　　yum配置参考: http://xjward.iteye.com/blog/1837074
　　memcacahed安装 参考：http://www.mohancheema.net/howtos/install-memcached-with-repcached-built-in-server-side-replication