一、安装gcc
# yum -y install gcc
二、安装libevent
# wget http://www.monkey.org/~provos/libevent-2.0.12-stable.tar.gz
# tar zxf libevent-2.0.12-stable.tar.gz
# cd libevent-2.0.12-stable
#./configure --prefix=/usr/local/lib
# make && make install
三、下载安装最新版本：http://memcached.org/downloads
# wget http://memcached.org/files/memcached-1.4.20.tar.gz
#tar zxvf memcached-1.4.20.tar.gz
# cd memcached-1.4.20
#./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/lib && make && make install
四、配置启动
# vi /etc/rc.local
#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.
touch /var/lock/subsys/local
/usr/sbin/ntpdate ntpupdate.tencentyun.com >/dev/null 2>&1 &
/usr/local/agenttools/agent/startagent.sh /usr/local/agenttools/agent /dev/null
#secu-tcs-agent bootstart, install at Tue Apr 29 17:21:38 CST 2014.
/usr/local/sa/agent/secu-tcs-agent-mon-safe.sh > /dev/null 2>&1
/usr/local/memcached/bin/memcached -p 12677 -U 0 -d -r -u root -m 2040 -c 1024 -t 4
保存后退出，手动启动服务
# /usr/local/memcached/bin/memcached -p 12677 -U 0 -d -r -u root -m 2040 -c 1024 -t 4
注：如果出现/usr/local/memcached/bin/memcached: error while loading shared libraries: libevent-2.0.so.5: cannot open shared object file: No such file or directory异常在/etc/ld.so.conf中加入/usr/local/lib这一行，保存之后，再运行：/sbin/ldconfig –v更新一下配置即可。
# vi /etc/ld.so.conf
# /sbin/ldconfig -V
五、测试memcached
# telnet 127.0.0.1 12677
出现以下信息表示启动成功
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.(退出telnet的方法是：quit+回车)