文章目录

1. 1. 安装Memcached
   1. 1.1. request
   2. 1.2. install
   3. 1.3. start
   4. 1.4. shutdown
   5. 1.5. test
   6. 1.6. 自动启动

安装Memcached

request

1. gcc

yum install gcc

1. libevent

yum install libevent*

install

./configure --with-libevent=/usr
make && sudo make install

start

sudo /usr/local/bin/memcached -d -m 10 -u root -l 192.168.32.193 -p 12000 -c 256 -P /tmp/memcached.pid

-d选项是启动一个守护进程，
-m是分配给Memcache使用的内存数量，单位是MB，我这里是10MB，
-u是运行Memcache的用户，我这里是root，
-l是监听的服务器IP地址，如果有多个地址的话，我这里指定了服务器的IP地址192.168.0.200，
-p是设置Memcache监听的端口，我这里设置了12000，最好是1024以上的端口，
-c选项是最大运行的并发连接数，默认是1024，我这里设置了256，按照你服务器的负载量来设定，
-P是设置保存Memcache的pid文件，我这里是保存在 /tmp/memcached.pid

shutdown

kill 'cat /tmp/memcached.pid'

test

telnet 192.168.32.193 12000
#基本协议
set key1 0 180 3
abc
STORED
add key1 0 180 3
xyz
NOT_STORED
get key1
VALUE key1 0 3
abc
END
replace key1 0 180 3
xyz
STORED
get key1
VALUE key1 0 3
xyz
END
delete key1
DELETED

自动启动

1. 启动脚本 存入/etc/init.d/memcached

   #!/bin/sh   
   #   
   # memcached:    MemCached Daemon   
   #   
   # chkconfig:    - 90 25  
   # description:  MemCached Daemon   
   #   
   # Source function library.   
   . /etc/rc.d/init.d/functions   
   . /etc/sysconfig/network   
   #[ ${NETWORKING} = "no" ] && exit 0  
   #[ -r /etc/sysconfig/dund ] || exit 0  
   #. /etc/sysconfig/dund   
   #[ -z "$DUNDARGS" ] && exit 0  
   start()   
   {   
           echo -n $"Starting memcached: "  
           daemon $MEMCACHED -u lbt -d -m 1024 -l 192.168.32.193 -p 12000 
           echo   
   }   
   stop()   
   {   
           echo -n $"Shutting down memcached: "  
           killproc memcached   
           echo   
   }   
   MEMCACHED="/usr/local/bin/memcached"  
   [ -f $MEMCACHED ] || exit 1  
   # See how we were called.   
   case "$1" in   
     start)   
           start   
           ;;   
     stop)   
           stop   
           ;;   
     restart)   
           stop   
           sleep 3  
           start   
           ;;   
       *)   
           echo $"Usage: $0 {start|stop|restart}"  
           exit 1  
   esac   
   exit 0

2. 执行以下命令

   chkconfig  --add memcached 
   chkconfig  --level 235  memcached  on

3. 测试使用

   chkconfig  --list | grep mem
   
   /etc/rc.d/init.d/memcached  start  
   /etc/rc.d/init.d/memcached  stop
   /etc/rc.d/init.d/memcached  restart
   或
   service memcached start
   service memcached stop
   service memcached restart