Linux系统上Memcached的安装以及自启动

Linux系统下Memcached的安装以及自启动

一、准备工作：

??? 1.下载libevent：http://monkey.org/~provos/libevent/ （由于memcached与客户端的通信是借助libevent来实现的，所以此动作必须在memcached安装前完成）

??? 2.下载memcached：http://memcached.org/ （注意：memcache是由服务器端和客户端共同组成，此处指memcache的服务器端，客户端在memcache的官网也提供了下载地址）

二、libevent安装：

??? 1.解压libevent安装包：
??? shell > tar zxvf libevent-2.0.10-stable.tar.gz

??? 2.进入解压后的目录并执行如下命令：

??? shell > ./configure （或./configure –prefix=libevent安装目录，默认安装目录为/usr/local/lib）

??? shell > make && make install

??? 3.查看安装是否成功

??? 测试libevent是否安装成功：ls -al /usr/lib | grep libevent（或 ls -al /usr/local/lib | grep libevent）

????

??? 4.Now we need to update /etc/ld.so.conf.d/libevent-i386.conf to add the path information for libevent. Use your favorite editor to edit /etc/ld.so.conf.d/libevent-i386.conf and add the following line if it doesn’t exist:

/usr/local/lib/,and then run ldconflg

??? 注意：向libevent-i386.conf中添加的是libevent库的安装目录（如：/usr/local/lib）；ldconfig是一个动态链接库管理命令

三、Memcached安装：

??? 1.解压memcached安装目录：

??? shell > tar zxvf memcached-1.4.5.tar.gz

??? 2.进入解压后的目录并执行如下命令：
??? shell > ./configure (或./configure –with-libevent=libevent安装目录
–prefix=memcached安装目录，默认安装在/usr/local/bin目录下)

??? shell > make && make install

??? 3.测试memcached安装是否成功：

??? shell > memcached -u root -vv后出现如下画面则说明成功：
???

四、配置memcached自启动

??? 1.编写memcached自启动脚本或直接使用memcached安装包中的脚本（位置如下,本文使用官方自带的脚本）
???

??? 2.修改自启动脚本（红色部分标识）

#! /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/functions

PORT=11211
USER=root

MAXCONN=1024
CACHESIZE=64
OPTIONS=””

if [ -f /etc/sysconfig/memcached ];then
??? . /etc/sysconfig/memcached
fi

# Check that networking is up.
if [ “$NETWORKING” = “no” ]
then
??? exit 0
fi

RETVAL=0

start () {
??? echo “Starting memcached …”
??? # insure that /var/run/memcached has proper permissions
??? chown $USER /usr/local/bin/memcached

??? /usr/local/bin/memcached
-d -p $PORT -u $USER -m $CACHESIZE -c $MAXCONN -P /var/run/memcached.pid $OPTIONS
??? RETVAL=$?
??? echo
??? [ $RETVAL -eq 0 ] && touch /var/lock/subsys/memcached
}
stop () {
??? echo “Stopping memcached …”
??? killproc memcached
??? RETVAL=$?
??? 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 1
esac

exit $?

??? 3.将此脚本呢cp到/etc/init.d目录下并改名为memcached,然后执行chmod a+x memcached，如下：

??? shell > cp memcached.sysv /etc/init.d/memcached

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