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memcached编译安装及自启动

作者:admin 发布于:2016-5-20 10:08 Friday 分类:网络转载


说明:
本篇实现memcached的编译安装及将memcached添加为系统服务以实现自启动

实现:
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Memcachepid文件,我这里是保存在/tmp/memcached.pid

 
二.添加memcached为系统服务,实现自启动
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/functions

PORT=11211 USER=root  //更改用户为root MAXCONN=64 CACHESIZE=10 OPTIONS="" if [ -f /etc/sysconfig/memcached ];then     . /etc/sysconfig/memcachedfi # Check that networking is up. if [ "$NETWORKING" = "no" ] then     exit 0 fi RETVAL=0 prog="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 1 esac exit $?

 
3.添加系统服务

# chmod 755 /etc/init.d/memcached # chkconfig --add memcached  //没看出这句作用,知道的请务必留言告知,谢谢! # chkconfig memcached on # service memcached start  //开启memcached服务

 
附录:
附录1.在/etc/rc.d/rc.local中添加/usr/local/memcached/bin/memcached -d -m 10 -u root -l 127.0.0.1 -p 11211 -c 64 -P /tmp/memcached.pid也可以实现自启动


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