php开启与安装 memcache-原创手记-慕课网

安装memcache

# wgethttp://www.danga.com/memcached/dist/memcached-1.2.0.tar.gz
# wget http://www.monkey.org/~provos/libevent-1.2.tar.gz

2.先安装libevent：
# tar zxvf libevent-1.2.tar.gz
# cd libevent-1.2
# ./configure –prefix=/usr
# make
# make install

3.测试libevent是否安装成功：
# ls -al /usr/lib | grep libevent
lrwxrwxrwx 1 root root 21 11?? 12 17:38 libevent-1.2.so.1 ->libevent-1.2.so.1.0.3
-rwxr-xr-x 1 root root 263546 11?? 12 17:38 libevent-1.2.so.1.0.3
-rw-r–r– 1 root root 454156 11?? 12 17:38 libevent.a
-rwxr-xr-x 1 root root 811 11?? 12 17:38 libevent.la
lrwxrwxrwx 1 root root 21 11?? 12 17:38 libevent.so -> libevent-1.2.so.1.0.3
还不错，都安装上了。

4.安装memcached，同时需要安装中指定libevent的安装位置：
# cd /tmp
# tar zxvf memcached-1.2.0.tar.gz
# cd memcached-1.2.0
# ./configure –with-libevent=/usr
# make
# make install
如果中间出现报错，请仔细检查错误信息，按照错误信息来配置或者增加相应的库或者路径。
安装完成后会把memcached放到 /usr/local/bin/memcached ，

5.测试是否成功安装memcached：
# ls -al /usr/local/bin/mem*
-rwxr-xr-x 1 root root 137986 11?? 12 17:39 /usr/local/bin/memcached
-rwxr-xr-x 1 root root 140179 11?? 12 17:39 /usr/local/bin/memcached-debug

6.启动memcache

# /usr/local/bin/memcached -d -m 10 -uroot -l 192.168.0.200 -p 11211 -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11211，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，

想开机自动启动的话，只需在/etc/rc.d/rc.local中加入一行，上面命令
有人用以下命令：
/usr/local/memcached/bin/memcached -d -m 20 -p 11211 -u apache
上面有些东西可以参考一下：即，ip不指定时，默认是本机，用户，最好选择是：apache 或 deamon
这样，也就是属于哪个用户的服务，由哪个用户启动。

启动服务时出现error while loadingshared libraries: libevent-2.0.so.5: cannot open shared object file: No suchfile or directory

>whereis libevent-2.0.so.5

libevent-2.0.so.5: /usr/local/lib/libevent-2.0.so.5

> ldd /usr/local/bin/memcached

libevent-2.0.so.5 => not found

libpthread.so.0 => /lib64/libpthread.so.0 (0x00002b83fce0e000)

libc.so.6 => /lib64/libc.so.6 (0x00002b83fd029000)

librt.so.1 => /lib64/librt.so.1 (0x00002b83fd381000)

/lib64/ld-linux-x86-64.so.2 (0x00002b83fc9b0000)

> LD_DEBUG=libs ./memcached -v

找到默认路径 /usr/lib/

>sudo ln -s /usr/lib/libevent-2.0.so.5/usr/lib64/libevent-2.0.so.5

>sudo ldd /usr/local/bin/memcached

libevent-2.0.so.5 => /usr/lib64/libevent-2.0.so.5(0x00002b83fcbcd000)

libpthread.so.0 => /lib64/libpthread.so.0 (0x00002b83fce0e000)

libc.so.6 => /lib64/libc.so.6 (0x00002b83fd029000)

librt.so.1 => /lib64/librt.so.1 (0x00002b83fd381000)

/lib64/ld-linux-x86-64.so.2 (0x00002b83fc9b0000)

Php 加载memcache模块

1.wget http://pecl.php.net/package/memcache/memcache-2.2.7.tgz

tarzxvf memcache-2.2.7.tgz

cdmemcache-2.2.7.tgz

/usr/local/php/bin/phpize ####php 安装路径

./configure --enable-memcache --with-php-config=/usr/local/php/bin/php-config--with -zlib-dir

make && make install

然后会得到提示

Installing sharedextensions:/usr/www/php/lib/php/extensions/no-debug-non-zts-20060613/

记下这个路径,查看phpinfo找到加载的php.ini的位置修改里面的

extension_dir="/usr/www/php/lib/php/extensions/no-debug-non-zts-20060613/"

添加

extension=memcache.so

重启php

/etc/init.d/php-fpm restart

使用PHP.info查看memcache 安装是否成功：

<?php

phpinfo();

上面是php.info 文件内容

memcached 启动脚本：

#!/bin/sh
#
# memcached: MemCached Daemon
#
# chkconfig: - 9025
# description: MemCached Daemon
#
# Source function library.
. /etc/rc.d/init.d/functions
. /etc/sysconfig/network
start()
{
echo -n $"Starting memcached: "
daemon /usr/local/bin/memcached -u daemon -d -m 4096 -l 10.10.10.220 -p 58728
######根据自己需要进行修改
echo
}
stop()
{
echo -n $"Shutting down memcached: "
killproc memcached
echo
}
[ -f /usr/local/bin/memcached ] || exit 0
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
restart|reload)
stop
start
;;
condrestart)
stop
start
;;
*)
echo $"Usage: $0 {start|stop|restart|reload|condrestart}"
exit 1
esac
exit 0