Mencached基本部署
Mamcached概述
memcached是一套分布式的高速缓存系统，运行在内存中。memcached缺乏认证以及安全管制，这代表应该将memcached服务器放置在防火墙后。
实验准备
| 名称 | 角色 | 地址 |
|---|---|---|
| centos7-1 | 服务端 | 192.168.142.66 |
| centos7-2 | 客户端 | 192.168.142.77 |
实验步骤
memcached服务端
安装环境包
[root@localhost libevent-2.1.8-stable]# yum install gcc gcc-c++ make -y安装Libevent软件本体
[root@localhost memcached]# tar zxf libevent-2.1.8-stable.tar.gz -C /opt/
[root@localhost memcached]# cd /opt/libevent-2.1.8-stable/
//配置并编译安装
[root@localhost libevent-2.1.8-stable]# ./configure \
--prefix=/usr/local/libevent
[root@localhost libevent-2.1.8-stable]# make && make install配置、安装Memcached
[root@localhost memcached]# tar zxf memcached-1.5.6.tar.gz -C /opt/
[root@localhost memcached]# cd /opt/memcached-1.5.6/
[root@localhost memcached-1.5.6]# ./configure \
--prefix=/usr/local/memached \
--with-libevent=/usr/local/libevent/
[root@localhost memcached-1.5.6]# make && make install
//建立软链接
[root@localhost memcached-1.5.6]# ln -s /usr/local/memached/bin/* /usr/local/bin/启动服务
[root@localhost memcached-1.5.6]# memcached -d -m 32m -p 11211 -u root
//“-d”：以守护进程的方式运行(后台运行)
//“-m”:指定最大使用内存大小
//“-p”：指定端口
//“-u”：指定用户
[root@localhost memcached-1.5.6]# netstat -atnp | grep 11211
tcp 0 0 0.0.0.0:11211 0.0.0.0:* LISTEN 12591/memcached
tcp6 0 0 :::11211 :::* LISTEN 12591/memcached
[root@localhost memcached-1.5.6]# systemctl stop firewalld.service
[root@localhost memcached-1.5.6]# setenforce 0安装Telent用于连接Memcached
[root@localhost memcached-1.5.6]# yum install telnet -y
//连接memcached
[root@localhost memcached-1.5.6]# telnet 192.168.142.66 11211
Trying 192.168.142.66...
Connected to 192.168.142.66.
Escape character is '^]'.客户端
安装LAMP架构
详情请见本人之前的博客，里面有详细部署过程，这里就不在赘述了
博客地址：
数据库中进行提权
[root@localhost ~]# mysql -uroot -p
mysql> create database sky;
mysql> grant all on sky.* to 'skyuser'@'%' identified by '123123';
mysql> flush privileges;测试PHP工具能否连接数据库
```php+HTML
[root@localhost htdocs]# vim /usr/local/httpd/htdocs/index.php
<?php
$link=mysql_connect('192.168.142.132','skyuser','123123');
if($link) echo "<h1>Success!!!</h1>";
else echo "Fail!!";
mysql_close();
?>
**安装、配置memcache客户端**
```java
[root@localhost memcached]# tar zxf memcache-2.2.7.tgz -C /opt/
[root@localhost memcached]# cd /opt/memcache-2.2.7/
[root@localhost memcache-2.2.7]# /usr/local/php5/bin/phpize //为memcache生成启动脚本
[root@localhost memcache-2.2.7]# ./configure \
--enable-memcache \
--with-php-config=/usr/local/php5/bin/php-config
//编译&安装
[root@localhost memcache-2.2.7]# make && make install修改PHP的配置文件
[root@localhost memcache-2.2.7]# vim /usr/local/php5/php.ini
//736行后添加
extension_dir = "/usr/local/php5/lib/php/extensions/no-debug-zts-20131226/"
extension = memcache.so建立测试页面
```php+HTML
[root@localhost memcache-2.2.7]# vim /usr/local/httpd/htdocs/index.php
<?php
$memcache = new Memcache();
$memcache->connect('192.168.142.136',11211); //memached服务端地址
$memcache->set('key',Memcache test Successfull!!!',0,60);
$result = $memcache->get('key');
unset($memcache);
echo $result;
?>