DirectAdmin 是一套国外开发的功能非常强劲的虚拟主机在线管理系统，通过这个管理系统您可以方便的管理您的服务器，设置EMAIL、设置DNS、开通FTP、在线文件管理、数据库管理等，方便管理员、客户及代理商在线操作虚拟主机信息。
安装教程
Centos安装脚本：
wget http://www.directadmin.com/setup.shchmod 755 setup.sh./setup.sh
提示是否需要执行脚本预安装必须的第三方软件包 输入 y
安装完毕第三方的包以后 会要求输入用户ID 授权ID 主机名 选择网卡
Client ID 和 License ID 请参见授权信息里面.
Hostname 主机名 必须是一个能解析访问有效的二级域名.
Enter the device name 网卡设备: OpenVZ一般是 venet0 或者 venet0:0，XEN KVM 独立服务器 的网卡是eth0或者eth1 ，具体看网卡设备后面是否是本机使用的IP
确认设备 以后 会提示 IP和操作系统是否正确 选择 y
接下来是选择自定义安装的版本 目前建议使用custombuild 2.0 ， 需要php5.2的请选择 custombuild 1.2 ，
本教程使用 custombuild 2.0 选择 1
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1: custombuild 2.0 Apache 2.4, mod_ruid2, php 5.5. Can be set to use mod_php, php–FPM or fastcgi.
2: custombuild 1.1: end–of–life software. Apache 2.x, php 4, 5, or both in cli and/or suphp. Defaults to php 5.2
3: custombuild 1.2: Production version: Apache 2.x, php 5 in cli or suphp. Defaults to php 5.3
4: custombuild 2.0 BETA: Apache 2.4, php–fpm, php 5.6. Can be set to use mod_ruid2, mod_php, php–FPM or fastcgi.
Post any issues with custombuild to the forum: http://forum.directadmin.com/forumdisplay.php?f=61
Enter your choice (1, 2, 3 or 4): 1
Would you like the default settings of apache 2.4 with mod_ruid2 and php 5.5 cli? (y/n): n
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You now have 4 options for your apache/php setup.
提示选择默认的版本 这里我们选择 n 因为 cli 版本没有隔离用户和站点 我们需要在下面选择
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Would you like the default settings of apache 2.4 with mod_ruid2 and php 5.5 cli? (y/n): n
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提示是否备份配置文件 输入 yes
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Would you like to backup the current options.conf? (yes/no): yes
Backup created: /usr/local/directadmin/custombuild/options.conf.20151105102436.backup
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选择 WEB 服务程序 ，一般为了兼容性我们选择 apache ，如果有别的需求，建议选择nginx_apache 这个兼容性比较好，litespeed 需要商业授权，否则是免费版，限制很多.
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Please select webserver you would like to use (apache/nginx/nginx_apache/litespeed):apache
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选择 FTP 服务程序，一般我们选择 proftpd ,选择 pureftpd 可以，都是DA后台在控制生成ftp信息
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Please select FTP server you would like to use (proftpd/pureftpd/no):proftpd
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接下来选择 PHP 版本。支持 php5.3~7.0，请根据自己的需求选择
PHP 运行模式，我们选择 suphp
是否安装第2个版本的PHP 输入 no 我们可以在安装完毕以后使用 CustomBuild 插件进行配置多版本php.
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Please select default PHP version you would like to use (5.3/5.4/5.5/5.6/7.0):5.3
Please select default PHP mode you would like to use (php–fpm/fastcgi/suphp/lsphp/mod_php):suphp
Would you like to have a second instance of PHP installed? (yes/no): no
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接下来是常用组件，
一般 ionCube 和 Zend Guard Loader 是必选的，输入 yes
suhosin PHP安全修复组件 必选 yes
phpMyAdmin 必选 yes
其他几个组件是email的 根据需求自选
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Please select if you would like to use ionCube (yes/no):yes
Please select if you would like to use Zend Guard Loader (yes/no):yes
Please select if you would like to use suhosin (yes/no):yes
Please select if you would like CustomBuild to manage Exim installation (yes/no):no
Please select if you would like CustomBuild to manage Dovecot installation (yes/no):no
Please select if you would like CustomBuild to manage phpMyAdmin installation (yes/no):yes
Please select if you would like CustomBuild to manage SquirrelMail installation (yes/no):no
Please select if you would like CustomBuild to manage RoundCube installation (yes/no):no
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接下来 是否测试选择最快的镜像 y
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Would you like to search for the fastest download mirror? (y/n): y
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接下来开始自动安装 MYSQL会自动安装为 5.5版本 ，后面都可以使用 CustomBuild 插件来自定义选择版本
等待15~30分钟左右就安装完毕了，安装完毕以后会提示后台登录地址和帐号密码
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## INSTALL_COMPLETE
## ACCOUNT_INFO
The following information has been set:
Admin username: admin
Admin password: Axxxxxx2
Admin email: admin@testda.vvv.com
Server IP: 192.x.x.x
Server Hostname: testda.vvv.com
To login now, follow this link:
http://192.x.x.x:2222
and enter your Admin username and password when prompted.
You should now visit http://admin.site-helper.com and http://www.directadmin.com/newinstall.html to learn how to get started.
Thank you for using DirectAdmin. Should you have any questions, don‘t hesitate to contact us at support@directadmin.com
## REPORT_END
Permissions set
System Security Tips:
http://help.directadmin.com/item.php?id=247
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