memcache集羣服務：memagent配置使用

原創

2020-02-21 22:26

magent使用

一、Linux環境下安裝magent：
　　1、安裝libevent：

wget http://monkey.org/~provos/libevent-1.4.13-stable.tar.gz tar -xzvf libevent-1.4.13-stable.tar.gz cd libevent-1.4.13-stable ./configure --prefix=/usr/local/libevent make make install

2、安裝Memcached：

wget http://memcached.googlecode.com/files/memcached-1.4.4.tar.gz tar -xzvf memcached-1.4.4.tar.gz cd memcached-1.4.4 ./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/libevent make make install ln -s /usr/local/libevent/lib/libevent-1.4.so.2 /usr/lib/

3、編譯安裝magent：

mkdir magent cp magent-0.5.tar.gz magent cd magent tar -xzvf magent-0.5.tar.gz /sbin/ldconfig sed -i "s#LIBS = -levent#LIBS = -levent -lm#g" Makefile vi magent.c 添加 #include <limits.h> make

二、使用實例：

memcached -m 1 -u root -d -l 192.168.1.219 -p 11211 memcached -m 1 -u root -d -l 192.168.1.219 -p 11212 memcached -m 1 -u root -d -l 192.168.1.219 -p 11213

magent -u root -n 51200 -l 192.168.1.219 -p 12000 -s 192.168.1.219:11211 -s 192.168.1.219:11212 -b 192.168.1.219:11213

1、分別在11211、11212、11213端口啓動3個Memcached進程，在12000端口開啓magent代理程序；
　　2、11211、11212端口爲主Memcached，11213端口爲備份Memcached；
　　3、連接上12000的magent，set key1和set key2，根據哈希算法，key1被寫入11212和11213端口的Memcached，key2被寫入11212和11213端口的Memcached；
　　4、當11211、11212端口的Memcached死掉，連接到12000端口的magent取數據，數據會從11213端口的Memcached取出。

三、整個測試流程：

# telnet 192.168.1.219 12000 Trying 1192.168.1.219... Connected to 192.168.1。219. Escape character is '^]'. stats memcached agent v0.4 matrix 1 -> 192.168.1.219:11211, pool size 0 matrix 2 -> 192.168.1.219:11212, pool size 0 END set key1 0 0 5 reesun STORED set key2 0 0 6 reesun1 STORED quit Connection closed by foreign host. # telnet 192.168.1.219 11211 Trying 192.168.1.219... Connected to 192.168.1.219. Escape character is '^]'. get key1 END get key2 VALUE key2 0 6 reesun1 END quit Connection closed by foreign host. # telnet 192.168.1.219 11212 Trying 192.168.1.219... Connected to 1192.168.1.219. Escape character is '^]'. get key1 VALUE key1 0 5 reesun END get key2 END quit Connection closed by foreign host. # telnet 192.168.1.219 11213 Trying 192.168.1.219... Connected to 1192.168.1.219. Escape character is '^]'. get key1 VALUE key1 0 5 reesun END get key2 VALUE key2 0 6 reesun1 END quit Connection closed by foreign host.