linux下安装memcached过程

         前一次已经安装过memcached，没有做记录，太久没有操作了也没有记录有点生疏，做一下笔记，已背后用。

• 下载文件

                           下载memcached服务端，http://www.danga.com/memcached/download.bml 
                           下载依赖文件libevent，http://www.monkey.org/~provos/libevent/ 

• 安装软件

             1、安装libevent

                 

          tar -xzvf libevent-2.0.21-stable.tar.gz

          cd libevent-2.0.21-stable

          ./configure --prefix=/usr/local/libevent

          make 

          make install

              2、安装memcached

          tar -xzvf memcached-1.4.20.tar.gz

          cd memcached-1.4.20

          ./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/libevent 

          make 

          make install

• 启动memcached

       cd /usr/local/memcached

      ./memcached -d -m 1024 -u root -l 218.5.76.101 -p 11211 -c 256 -P /tmp/memcached.pid 

•  停止memcached

       cat /tmp/chenxinhan/memcached.pid

       kill 查询的序号

• 设定memcached自启动

             1、从memcached安装包的拷贝启动脚本

                    

          cp /home/memcached-1.4.20/scripts/memcached.sysv /etc/init.d/memcached

             2、修改memcached

#! /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=nobody
MAXCONN=1024
CACHESIZE=1024
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
prog="memcached"

start () {
    echo -n $"Starting $prog: "
    # insure that /usr/local/memcached has proper permissions
    chown $USER /usr/local/memcached
    /usr/local/memcached/bin/memcached -d -p $PORT -u $USER  -m $CACHESIZE -c $MAXCONN -P /tmp/memcached.pid $OPTIONS
    RETVAL=$?
    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 /tmp/memcached.pid
    fi

         3、将memcached设定为系统服务

       chkconfig --add memcached

       chkconfig memcached on

       service memcached start

 

•  更换memcached监听端口
  

              memcached的默认监听端口为11211，如果想更换监听端口直接修改/etc/init.d/memcached文件中的自启动端口
              修改端口参数PORT=21211
              开放iptables

       vi /etc/sysconfig/iptables

              添加该端口的防火墙规则

       -A INPUT -m state --state NEW -m tcp -p tcp --dport 21211  -j ACCEPT

              重启iptables

       service iptables restart