一、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
二、下载安装最新版本：http://memcached.org/downloads
# wget http://memcached.org/files/memcached-1.4.20.tar.gz
# cd memcached-1.4.20
#./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/lib && make && make install
三、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
四、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 '^]'.
Linux下php安装memcache扩展
安装环境：CentOS 6.4
PHP扩展memcache的作用是为了支持memcached数据库缓存服务器，下面是安装方法。
1、下载
下载地址：http://pecl.php.net/package/memcache
文件名：memcache-3.0.8.tgz
文件下载成功后上传至/usr/local目录
2、安装
[root@vm15 local]# tar -zxvf memcache-3.0.8.tgz
root@vm15 local]# cd memcache-3.0.8
[root@vm15 memcache-3.0.8]# /usr/bin/phpize
Configuring for:
PHP Api Version: 20131106
Zend Module Api No: 20131226
Zend Extension Api No: 220131226
[root@vm15 memcache-3.0.8]# ./configure --enable-memcache --with-php-config=/usr/local/php/bin/php-config --with-zlib-dir 或者直接./configure
[root@vm15 memcache-3.0.8]# make
[root@vm15 memcache-3.0.8]# make install
Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-zts-20131226/
[root@vm15 memcache-3.0.8]# ll /usr/local/php/lib/php/extensions/no-debug-zts-20131226/
total 2140
-rwxr-xr-x. 1 root root 453766 Dec 30 17:44 memcache.so
-rwxr-xr-x. 1 root root 861055 Dec 30 16:47 Redis.so
出现memcache.so就表明安装成功了
tips:
configure: error: memcache support requires ZLIB. Use --with-zlib-dir=<DIR> to specify prefix where ZLIB include and library are located
yum 安装 #yum install zlib-devel
3、配置支持php
[root@vm15 memcache-3.0.8]# vi + /usr/local/php/lib/php.ini
添加
extension=memcache.so
:wq! #保存退出
4、重启服务
#/etc/init.d/php-fpm restart