原始碼安裝memcached和php memcache擴充套件
注：以下安裝步驟以centos6.5系統為例。
一、安裝前準備
1、下載原始碼包
目前最新版本是http://www.memcached.org/files/memcached-1.4.24.tar.gz
2、安裝libevent
由於memcached依賴於libevent庫,因此需要安裝libevent
#yum install libevent libevent-devel
二、安裝memcached
1、建立memcached使用者
#useradd -d /var/run/memcached/ -s /sbin/nologin -c “Memcached daemon” memcached
2、解壓原始碼包
#tar zxvf memcached-1.4.24.tar.gz
3、編譯安裝
#cd memcached-1.4.24
#./configure –prefix=/usr/local/memcached
#make && make install
4、memcached常用引數說明
-m memcache最大可用記憶體數（單位：M）
-u 使用者
-l 監聽IP
-p 埠號
三、新增service指令碼
#vi /etc/rc.d/init.d/memcached
內容如下
#! /bin/sh
#
# chkconfig: – 55 45
# description: The memcached daemon is a network memory cache service.
# processname: memcached
# config: /etc/sysconfig/memcached
# pidfile: /var/run/memcached/memcached.pid
# Standard LSB functions
#. /lib/lsb/init-functions
# Source function library.
. /etc/init.d/functions
IP=127.0.0.1
PORT=11211
USER=memcached
MAXCONN=1024
CACHESIZE=64
OPTIONS=””
# Check that networking is up.
. /etc/sysconfig/network
if [ “$NETWORKING” = “no” ]
then
exit 0fi
RETVAL=0
prog=”memcached”
pidfile=${PIDFILE-/var/run/memcached/memcached.pid}
lockfile=${LOCKFILE-/var/lock/subsys/memcached}
start () {
echo -n $"Starting $prog: "
# Ensure that /var/run/memcached has proper permissions
if [ "`stat -c %U /var/run/memcached`" != "$USER" ]; then
chown $USER /var/run/memcached
fi
daemon --pidfile ${pidfile} /usr/local/memcached/bin/memcached -d -l $IP -p $PORT -u $USER -m $CACHESIZE -c $MAXCONN -P ${pidfile} $OPTIONS
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch ${lockfile}}
stop () {
echo -n $"Stopping $prog: "
killproc -p ${pidfile} /usr/local/memcached/bin
RETVAL=$?
echo
if [ $RETVAL -eq 0 ] ; then
rm -f ${lockfile} ${pidfile}
fi}
restart () {
stop
start}
# See how we were called.
case “$1” in
start)
start
;;stop)
stop
;;status)
status -p ${pidfile} memcached
RETVAL=$?
;;restart|reload|force-reload)
restart
;;condrestart|try-restart)
[ -f ${lockfile} ] && restart || :
;;*)
echo $"Usage: $0 {start|stop|status|restart|reload|force- reload|condrestart|try-restart}"
RETVAL=2
;;esac
exit $RETVAL
四、測試
1、啟動memcached服務
#/etc/rc.d/init.d/memcached start
預設memcached服務監聽在127.0.0.1:11211
2、測試
#telnet 127.0.0.1 11211
輸入 stats，正常顯示如下，說明安裝成功
Trying 127.0.0.1…
Connected to 127.0.0.1.
Escape character is `^]`.
stats
STAT pid 12246
STAT uptime 2444
STAT time 1442302696
STAT version 1.4.24
STAT libevent 2.0.22-stable
STAT pointer_size 64
STAT rusage_user 0.089986
STAT rusage_system 0.027995
STAT curr_connections 5
STAT total_connections 7
STAT connection_structures 6
五、安裝memcached-tool工具
memcached-tool是memcached監控工具，是一個perl指令碼，可以直接執行。命令用法如下。Usage: memcached-tool <host[:port]> [mode]
memcached-tool 10.0.0.5:11211 display # shows slabs
memcached-tool 10.0.0.5:11211 # same. (default is display)
memcached-tool 10.0.0.5:11211 stats # shows general stats
memcached-tool 10.0.0.5:11211 dump # dumps keys and values
六、安裝php memcache擴充套件
1、下載原始碼包
memcache-3.0.8.tgz
2、安裝memcache擴充套件
#tar zxvf memcache-3.0.8.tgz
#cd memcache-3.0.8
#/usr/local/php/bin/phpize
#./configure –with-php-config=/usr/local/php/bin/php-config
#make && make install
3、修改配置檔案php.ini
新增 extension=memcache.so
4、測試
重啟nginx和php-fpm，檢視phpinfo（）顯示如下有資訊，說明安裝成功。
Registered save handlers files user memcache