Linux下Memcached的编译安装

实现memcached的编译安装及将memcached添加为系统服务

一.编译安装memcached

# yum install libevent libevent-devel -y //memcached借助libevent与客户端通信是来实现的，所以需要先安装libevent,libevent-devel# cd /usr/local/src# wget http://memcached.googlecode.com/files/memcached-1.4.5.tar.gz# tar -xvzf memcached-1.4.5.tar.gz# cd memcached-1.4.5# ./configure --prefix=/usr/local/memcached# make && make install

至此，memcached就安装成功。可以以下方式开启memcached守护进程，使用默认端口11211

# /usr/local/memcached/bin/memcached -d -m 10 -u root -l 127.0.0.1 -p 11211 -c 64 -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

二.添加memcached为系统服务

1.拷贝memcached源码包的memcached.sysv拷贝到/etc/init.d，做为memcached的启动脚本

# cp /usr/local/src/memcached-1.4.5/scripts/memcached.sysv /etc/init.d/memcached //将memcached源码包的memcached.sysv拷贝到/etc/init.d，做为memcached的启动脚本

2.修改/etc/init.d/memcached

# vim /etc/init.d/memcached  //修改USER等，需要修改的都用//表示#!/bin/sh## chkconfig: - 55 45# description:  The memcached daemon is a network memory cache service.# processname: memcached# config: /etc/sysconfig/memcached# Source function library.. /etc/rc.d/init.d/functionsPORT=11211USER=root  //更改用户为rootMAXCONN=64CACHESIZE=10OPTIONS=""if [ -f /etc/sysconfig/memcached ];then    . /etc/sysconfig/memcachedfi# Check that networking is up.if [ "$NETWORKING" = "no" ]then    exit 0fiRETVAL=0prog="memcached"start () {    echo -n $"Starting $prog: "    # insure that /var/run/memcached has proper permissions    # chown $USER /usr/local/memcached  //在此行前加#注释此行，感觉没用    daemon /usr/local/memcached/bin/memcached -d -p $PORT -u $USER  -m $CACHESIZE -c $MAXCONN -P /tmp/memcached.pid $OPTIONS  //修改daemon memcached为daemon /usr/local/memcached/bin/memcached，不然/etc/init.d/memcached时会显示/bin/sh memcached command not found    RETVAL=$?    echo    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/memcached}stop () {    echo -n $"Stopping $prog: "    killproc memcached    RETVAL=$?    echo    if [ $RETVAL -eq 0 ] ; then        rm -f /var/lock/subsys/memcached        rm -f /var/run/memcached.pid    fi}restart () {    stop    start}# See how we were called.case "$1" in    start)        start        ;;    stop)    stop    ;;    status)    status memcached    ;;    restart|reload)    restart    ;;    condrestart)    [ -f /var/lock/subsys/memcached ] && restart || :    ;;    *)    echo $"Usage: $0 {start|stop|status|restart|reload|condrestart}"    exit 1esacexit $?

3.添加系统服务

# chmod 755 /etc/init.d/memcached# chkconfig --add memcached  # chkconfig memcached on# service memcached start  //开启memcached服务