部署memcached
March 09, 2015
1.分别把memcached和libevent下载回来,放到 /tmp 目录下:
# cd /tmp
# wget http://www.danga.com/memcached/dist/memcached-1.2.0.tar.gz
# wget http://www.monkey.org/~provos/libevent-1.2.tar.gz
2.先安装libevent:
# tar zxvf libevent-1.2.tar.gz
# cd libevent-1.2
# ./configure --prefix=/usr
# make
# make install
3.测试libevent是否安装成功:
# ls -al /usr/lib | grep libevent
lrwxrwxrwx 1 root root 21 Mar 9 17:03 libevent-1.3.so.1 -> libevent-1.3.so.1.0.3
-rwxr-xr-x 1 root root 338172 Mar 9 17:03 libevent-1.3.so.1.0.3
-rw-r--r-- 1 root root 533772 Mar 9 17:03 libevent.a
-rwxr-xr-x 1 root root 805 Mar 9 17:03 libevent.la
lrwxrwxrwx 1 root root 21 Mar 9 17:03 libevent.so -> libevent-1.3.so.1.0.3
4.安装memcached,同时需要安装中指定libevent的安装位置:
# cd /tmp
# tar zxvf memcached-1.2.0.tar.gz
# cd memcached-1.2.0
# ./configure --with-libevent=/usr
# make
# make install
安装完成后会把memcached放到 /usr/local/bin/memcached ,
5.测试是否成功安装memcached:
# ls -al /usr/local/bin/mem*
-rwxr-xr-x 1 root root 142722 Mar 9 17:04 /usr/local/bin/memcached
-rwxr-xr-x 1 root root 152276 Mar 9 17:04 /usr/local/bin/memcached-debug
memcached的基本设置:
1.启动Memcache的服务器端:
# /usr/local/bin/memcached -d -m 10 -u root -l 192.168.251.88 -p 12000 -c 256 -P /tmp/memcached.pid
-d选项是启动一个守护进程,
-m是分配给Memcache使用的内存数量,单位是MB,我这里是10MB,
-u是运行Memcache的用户,我这里是root,
-l是监听的服务器IP地址,如果有多个地址的话,我这里指定了服务器的IP地址192.168.0.200,
-p是设置Memcache监听的端口,我这里设置了12000,最好是1024以上的端口,
-c选项是最大运行的并发连接数,默认是1024,我这里设置了256,按照你服务器的负载量来设定,
-P是设置保存Memcache的pid文件,我这里是保存在 /tmp/memcached.pid,
2.如果要结束Memcache进程,执行:
# kill `cat /tmp/memcached.pid`
ps:
启动memcache时会报错,提示“/usr/local/bin/memcached: error while loading shared libraries: libevent-1.3.so.1: cannot open shared object file: No such file or directory”
解决办法:
# whereis libevent
# ln -s /usr/lib/libevent-1.3.so.1 /usr/lib64/libevent-1.3.so.1
# 再次启动就ok了。