Linux--memcached添加为系统服务

memcached安装(YUM):

--------------------------------------------------------------

我用的是CentOS,直接用YUM安装，以备以后更新，卸载方便:

yum install libevent

这个是第一步，

第二步是安装memcache，但是标准的CentOS5软件仓库里面是没有memcache相应的包的,所以，我们的第一步就是导入第三方软件仓库，这里推荐的是 Dag Wieers 库（现在叫 RPMForge 了），安装方法如下：

wget http://dag.wieers.com/rpm/packages/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

rpm -ivh rpmforge-release-0.3.6-1.el5.rf.i386.rpm

查找相关软件包

yum search memcache

有了，现在可以安装了

yum -y install –enablerepo=rpmforge memcached php-pecl-memcache

验证一下安装结果

memcached -h

php -m|grep memcache

启动memcached

/sbin/servive memcached start

安装完后 memcached 就直接是服务了，可以用命令:

chkconfig --list 

查看系统服务列表。如果memcached对应的3,4,5都是on表明它已经是开机自动启动了，如果不是:

设置为开机自动启动:

chkconfig --level 345 memcached on

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如果不是用 YUM 方式安装的，安装完成后，则需要自己把它添加到系统服务中，首先，在/etc/init.d目录下建立自己的文件：memcached

touch memcached

然后编辑:

vi memcached

输入如下内容:

#!/bin/sh

# chkconfig: 235 11211 15  

# 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 

# 此值为最大连接数

MAXCONN=1024

# 此值为允许 memcached使用的最大内存,单位为 Mb

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/memcached/bin/memcached 

    /usr/local/memcached/bin/memcached -d -p $PORT -u $USER -m $CACHESIZE -c $MAXCONN -P/tmp/memcached1.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 /tmp/memcached1.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 0

保存并退出。

注意上面红色部分的路径，必须保证这里填写的是自己memcached安装完成后的memcached执行文件路径.

然后执行命令:

chkconfig --add memcached

或试试:chkconfig memcached on

然后查看系统服务.在我机器上成功了，其他的就不知道了。我的系统版本是：CentOS 5.0

另一个配置文件:

#! /bin/sh

#

# chkconfig: - 55 45

# description: The memcached daemon is a network memory cache service.

# processname: memcached

# config: /etc/sysconfig/memcached

# pidfile: /var/run/memcached/memcached.pid

# Standard LSB functions

#. /lib/lsb/init-functions

# Source function library.

. /etc/init.d/functions

PORT=11211

USER=memcached

MAXCONN=1024

CACHESIZE=2048

OPTIONS=""

if [ -f /etc/sysconfig/memcached ];then 

. /etc/sysconfig/memcached

fi

# Check that networking is up.

. /etc/sysconfig/network

if [ "$NETWORKING" = "no" ]

then

exit 0

fi

RETVAL=0

prog="memcached"

pidfile=${PIDFILE-/var/run/memcached/memcached.pid}

lockfile=${LOCKFILE-/var/lock/subsys/memcached}

start () {

echo -n $"Starting $prog: "

# Ensure that /var/run/memcached has proper permissions

if [ "`stat -c %U /var/run/memcached`" != "$USER" ]; then

chown $USER /var/run/memcached

fi

daemon --pidfile ${pidfile} memcached -d -p $PORT -u $USER  -m $CACHESIZE -c $MAXCONN -P ${pidfile} $OPTIONS

RETVAL=$?

echo

[ $RETVAL -eq 0 ] && touch ${lockfile}

}

stop () {

echo -n $"Stopping $prog: "

killproc -p ${pidfile} /usr/bin/memcached

RETVAL=$?

echo

if [ $RETVAL -eq 0 ] ; then

rm -f ${lockfile} ${pidfile}

fi

}

restart () {

        stop

        start

}

# See how we were called.

case "$1" in

  start)

start

;;

  stop)

stop

;;

  status)

status -p ${pidfile} memcached

RETVAL=$?

;;

  restart|reload|force-reload)

restart

;;

  condrestart|try-restart)

[ -f ${lockfile} ] && restart || :

;;

  *)

echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart|try-restart}"

RETVAL=2

        ;;

esac

exit $RETVAL