curl -O http://vestacp.com/pub/vst-install.sh
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 0 0 6107 0 :: :: ::-- 0
root@TameVacant-VM ~# bash vst-install.sh
2019-06-15 18:12:48 http://vestacp.com/pub/vst-install-rhel.sh
Resolving vestacp.com... 104.236.66.100
Connecting to vestacp.com|104.236.66.100|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 47452 (46K) text/plain
Saving to: `vst-install-rhel.sh'
100%===================================... 47,452 --.-K/s in 0.1s
2019-06-15 18:12:48 (367 KB/s) - `vst-install-rhel.sh' saved 47452/47452
!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!
Following packages are already installed: httpd
It is highly recommended to remove them before proceeding. If you want to force installation run this script with -f option: Example: bash vst-install-rhel.sh --force
!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!
Error: Control Panel should be installed on clean server.
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查看原文：http://www.bxl.me/5761.html 今天在折腾vestacp时使用官方的一键安装包出现了以下的错误！解决方法很简单！
出错原因
主要的就是你的机器上面已经安装bind-9，需要卸载才可以进行安装操作
Following packages are already installed: httpd bind-9 It is highly recommended to remove them before proceeding. If you want to force installation run this script with -f option: Example: bash vst-install-rhel.sh --force
解决办法
在SSH中直接输入以下命令即可！
yum remove httpd bind* 可以使用下面的方法，强制安装：
bash vst-install-rhel.sh --force 这样所有的问题就可以轻松解决了！
引自：http://blog.sina.com.cn/s/blog_59cc90640101cq59.html