centos安装memcached

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