CentOS6.x安装memcached

jiay

一、系统及安装说明
      系统：CentOS6.x_x64，memcached-1.5.3。memcached官方下载地址 http://www.memcached.org/files/memcached-1.5.3.tar.gz。libevent 库：https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
二、开始安装
1>首先yum安装gcc
    yum install -y wget gcc


2>安装源码libevent库
#wget https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
#tar zxvf libevent-2.0.21-stable.tar.gz
#./configure --prefix=/usr/local/libevent
#make && make install　　#检查是否安装成功
#输入： ls -al /usr/local/libevent/lib | grep libevent
#如果输出为下所示则表示安装成功
lrwxrwxrwx 1 root root      21 Dec  4 18:08 libevent-2.0.so.5 -> libevent-2.0.so.5.1.9
-rwxr-xr-x 1 root root  968442 Dec  4 18:08 libevent-2.0.so.5.1.9
-rw-r--r-- 1 root root 1571130 Dec  4 18:08 libevent.a
lrwxrwxrwx 1 root root      26 Dec  4 18:08 libevent_core-2.0.so.5 -> libevent_core-2.0.so.5.1.9
-rwxr-xr-x 1 root root  585057 Dec  4 18:08 libevent_core-2.0.so.5.1.9
-rw-r--r-- 1 root root  977914 Dec  4 18:08 libevent_core.a
-rwxr-xr-x 1 root root     985 Dec  4 18:08 libevent_core.la
lrwxrwxrwx 1 root root      26 Dec  4 18:08 libevent_core.so -> libevent_core-2.0.so.5.1.9
lrwxrwxrwx 1 root root      27 Dec  4 18:08 libevent_extra-2.0.so.5 -> libevent_extra-2.0.so.5.1.9
-rwxr-xr-x 1 root root  404772 Dec  4 18:08 libevent_extra-2.0.so.5.1.9
-rw-r--r-- 1 root root  593288 Dec  4 18:08 libevent_extra.a
-rwxr-xr-x 1 root root     992 Dec  4 18:08 libevent_extra.la
lrwxrwxrwx 1 root root      27 Dec  4 18:08 libevent_extra.so -> libevent_extra-2.0.so.5.1.9
-rwxr-xr-x 1 root root     950 Dec  4 18:08 libevent.la
lrwxrwxrwx 1 root root      29 Dec  4 18:08 libevent_openssl-2.0.so.5 -> libevent_openssl-2.0.so.5.1.9
-rwxr-xr-x 1 root root   94209 Dec  4 18:08 libevent_openssl-2.0.so.5.1.9
-rw-r--r-- 1 root root  131836 Dec  4 18:08 libevent_openssl.a
-rwxr-xr-x 1 root root    1021 Dec  4 18:08 libevent_openssl.la
lrwxrwxrwx 1 root root      29 Dec  4 18:08 libevent_openssl.so -> libevent_openssl-2.0.so.5.1.9
lrwxrwxrwx 1 root root      30 Dec  4 18:08 libevent_pthreads-2.0.so.5 -> libevent_pthreads-2.0.so.5.1.9
-rwxr-xr-x 1 root root   18462 Dec  4 18:08 libevent_pthreads-2.0.so.5.1.9
-rw-r--r-- 1 root root   18702 Dec  4 18:08 libevent_pthreads.a
-rwxr-xr-x 1 root root    1013 Dec  4 18:08 libevent_pthreads.la
lrwxrwxrwx 1 root root      30 Dec  4 18:08 libevent_pthreads.so -> libevent_pthreads-2.0.so.5.1.9
lrwxrwxrwx 1 root root      21 Dec  4 18:08 libevent.so -> libevent-2.0.so.5.1.9　　3>下载安装memcached
#wget
#tar -zxvf  memcached-1.5.3.tar.gz
#./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/libevent
#make && make install
#ln -s /usr/local/memcached/bin/memcached /usr/local/bin   #建立软连接　　三、编辑脚本加入启动项
　　1>脚本
　　vim cat /etc/init.d/memcached
#!/bin/sh
#
# memcached:    MemCached Daemon
#
# chkconfig:    - 90 25
# description:  MemCached Daemon
# Source function library.
# Author: pkey san 2015/12/07
. /etc/rc.d/init.d/functions
. /etc/sysconfig/network
prog=memcached
pidfile=${PIDFILE-/var/run/memcached.pid}
start()
{
        echo -n $"Starting memcached: "
        daemon --pidfile=${pidfile} /usr/local/bin/memcached -u daemon -d -m 512 -l 127.0.0.1 -c 4096 -p 11211
        echo `ps aux |grep memcached |grep 11211 |grep -v grep |awk '{print $2}'` >$pidfile
        echo
}
stop()
{
        echo -n $"Shutting down memcached: "
        killproc  $prog
        echo
}
rh_status(){
status -p ${pidfile} $prog
}
[ -f /usr/local/bin/memcached ] || exit 0
# See how we were called.
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  status)
        rh_status
        ;;
  restart|reload)
        stop
        start
        ;;
  *)
        echo $"Usage: $0 {start|stop|status|restart|reload|}"
        exit 1
esac
exit 0　　2>解释说明
　　daemon --pidfile=${pidfile} /usr/local/bin/memcached -u daemon -d -m 512 -l 127.0.0.1 -c 4096 -p 11211

• 　　-p memcached监听的TCP端口
  
• 　　-l 监听的ip地址，127.0.0.1是本机，当然也可以写上你的服务器IP，如：10.0.0.10，这是我服务器的IP地址，如果你需要多个服务器都能够读取这台memcached的缓存数据，那么就必须设定这个ip
  
• 　　-d 以daemon方式运行，将程序放入后台
  
• 　　-u memcached的运行用户
  
• 　　-P memcached的pid文件路径
  
• 　　-m memcached可以使用的最大内存数量
  
• 　　-c memcached同时可以接受的最大的连接数
  

如果你希望以socket方式来访问memcached，那么在启动的时候就必须去掉 -l和-p参数，并加上-s参数：

• 　　-s memcached的socket文件路径
  

　　3>添加开机启动
#chmod +x /etc/init.d/memcached
#chkconfig --add memcached
#chkconfig memcached on
#service memcached start|stop|restart|reload|status　　三、编译配置(第二种启动方式)
#安装好之后
ln -s /usr/local/memcached/bin/memcached /usr/bin/memcached
/bin/cp scripts/memcached.sysv /etc/init.d/memcached
sed -i 's@^USER=.*@USER=root@' /etc/init.d/memcached
sed -i 's@chown@#chown@' /etc/init.d/memcached
sed -i 's@/var/run/memcached/memcached.pid@/var/run/memcached.pid@' /etc/init.d/memcached
sed -i 's@^prog=.*@prog="/usr/local/memcached/bin/memcached"@' /etc/init.d/memcached #前面有软链接，这里可以省略
chmod +x /etc/init.d/memcached
chkconfig --add memcached
chkconfig memcached on　　此种方式也可以加到启动项里。