centos安装memcached（转载）

转载文章，转自

http://www.sunchis.com/html/db/memcached/2011/0526/333.html

 

在CentOS 5.6上编译安装Memcached

1、 由于memcached是基于libevent的，因此需要安装libevent，libevent- devel

# yum install libevent libevent-devel -y

2、 下载并解压memcached-1.4.5

memcached官方网站是：http://memcached.org/

# cd /root
# wget http://memcached.googlecode.com/files/memcached-1.4.5.tar.gz
# tar -xvzf  memcached-1.4.5.tar.gz

3、 编译安装memcached-1.4.5

# cd memcached-1.4.5
# ./configure --prefix

=/etc/memcached
# make
# make install

4、 配置环境变量

进入用户宿主目录，编辑.bash_profile，为系统环境变量LD_LIBRARY_PATH增加新的目录，需要增加的内容如下：

# vi .bash_profile

MEMCACHED_HOME

=/etc/memcached
export LD_LIBRARY_PATH

=$LD_LIBRARY_PATH:$MEMCACHED_HOME/lib

刷新用户环境变量：# source .bash_profile

5、 编写memcached服务启停脚本

# cd /etc/init.d

vi memcached，脚本内容如下：

#!/bin/sh
#
# Startup script for the server of memcached
#
# processname: memcached
# pidfile: /etc/memcached/memcached.pid
# logfile: /etc/memcached/memcached_log.txt
# memcached_home: /etc/memcached
# chkconfig: 35 21 79
# description: Start and stop memcached Service

# Source function library
. /etc/rc.d/init.d/functions

RETVAL=0

prog="memcached"
basedir=/etc/memcached
cmd=${basedir}/bin/memcached
pidfile="$basedir/${prog}.pid"
#logfile="$basedir/memcached_log.txt"

# 设置memcached启动参数
ipaddr="192.168.1.201"

          # 绑定侦听的IP地址
port="11211"

                    # 服务端口
username="root"

                 # 运行程序的用户身份
max_memory=64                   # default: 64M | 最大使用内存
max_simul_conn=1024             # default: 1024 | 最大同时连接数
#maxcon=51200
#growth_factor=1.3              # default: 1.25 | 块大小增长因子
#thread_num=6                   # default: 4
#verbose="-vv"                  # 查看详细启动信息
#bind_protocol=binary           # ascii, binary, or auto (default)

start() {
    echo -n $"Starting service: $prog"
    $cmd -d -m $max_memory -u $username -l $ipaddr -p $port -c $max_simul_conn -P $pidfile
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/$prog
}

stop() {
    echo -n $"Stopping service: $prog  "
    run_user=`whoami`
        pidlist=`ps -ef | grep $run_user | grep memcached | grep -v grep | awk '{print($2)}'`
        for pid in $pidlist
        do
#           echo "pid=$pid"
            kill -9 $pid
            if [ $? -ne 0 ]; then
                return 1
            fi
        done
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog
}

# See how we were called.
case "$1"

 in
    start)
        start
        ;;
    stop)
        stop
        ;;
    #reload)
    #    reload
    #    ;;
    restart)
        stop
        start
        ;;
    #condrestart)
    #    if [ -f /var/lock/subsys/$prog ]; then
    #        stop
    #        start
    #    fi
    #    ;;
    status)
        status memcached
        ;;
    *)
        echo "Usage: $0 {start|stop|restart|status}"
        exit 1
esac

exit $RETVAL

设置脚本可被执行：# chmod +x memcached

6、 设置memcached随系统启动

# chkconfig --add memcached
# chkconfig --level 35 memcached on

启动memcached

# service memcached start
//启动的时候实际上是调用了下面的这个命令，以守护进程的方式来启动memcached
/etc/memcached/bin/memcached -d -m 64 -u root -l 192.168.1.201
\-p 11211 -c 1024 -P /etc/memcached/memcached.pid

查看memcached是否启动：

# ps -ef | grep memcached