Mencached羣集部署

Mencached基本部署

Mamcached概述

memcached是一套分佈式的高速緩存系統，運行在內存中。memcached缺少認證以及安全管制，這表明應該將memcached服務器放置在防火牆後。

實驗準備

名稱	角色	地址
centos7-1	服務端	192.168.142.66
centos7-2	客戶端	192.168.142.77

實驗步驟

memcached服務端

安裝環境包

[root@localhost libevent-2.1.8-stable]# yum install gcc gcc-c++ make -y

安裝Libevent軟件本體

[root@localhost memcached]# tar zxf libevent-2.1.8-stable.tar.gz -C /opt/
[root@localhost memcached]# cd /opt/libevent-2.1.8-stable/
//配置並編譯安裝
[root@localhost libevent-2.1.8-stable]# ./configure \
--prefix=/usr/local/libevent
[root@localhost libevent-2.1.8-stable]# make && make install

配置、安裝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
//創建軟連接
[root@localhost memcached-1.5.6]# ln -s /usr/local/memached/bin/* /usr/local/bin/

啓動服務

[root@localhost memcached-1.5.6]# memcached -d -m 32m -p 11211 -u root
//「-d」：以守護進程的方式運行(後臺運行)
//「-m」:指定最大使用內存大小
//「-p」：指定端口
//「-u」：指定用戶

[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

安裝Telent用於鏈接Memcached

[root@localhost memcached-1.5.6]# yum install telnet -y
//鏈接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 '^]'.

客戶端

安裝LAMP架構

詳情請見本人以前的博客，裏面有詳細部署過程，這裏就不在贅述了

博客地址：

數據庫中進行提權

[root@localhost ~]# mysql -uroot -p
mysql> create database sky;
mysql> grant all on sky.* to 'skyuser'@'%' identified by '123123';
mysql> flush privileges;

測試PHP工具可否鏈接數據庫

```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();
?>

**安裝、配置memcache客戶端**

```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   //爲memcache生成啓動腳本
[root@localhost memcache-2.2.7]# ./configure \
--enable-memcache \
--with-php-config=/usr/local/php5/bin/php-config

//編譯&安裝
[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行後添加
extension_dir = "/usr/local/php5/lib/php/extensions/no-debug-zts-20131226/"
extension = memcache.so

創建測試頁面

```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服務端地址$memcache->set('key',Memcache test Successfull!!!',0,60);$result = $memcache->get('key');unset($memcache);echo $result;?>