不能直接安装，需要安装点别的

yum -y install yum-plugin-copr

 yum copr enable @caddy/caddy

yum -y install caddy

到这一步以后caddy就算是安装好了

启动

systemctl start caddy

cd /etc/caddy/Caddyfile这个目录会有一个配置文件，部署网站用的，长这样

:80 {
	# Set this path to your site's directory.
	root * /usr/share/caddy

	# Enable the static file server.
	file_server

	# Another common task is to set up a reverse proxy:
	# reverse_proxy localhost:8080

	# Or serve a PHP site through php-fpm:
	# php_fastcgi localhost:9000
}

我们部署网站仅需要增加即可

# The Caddyfile is an easy way to configure your Caddy web server.
#
# Unless the file starts with a global options block, the first
# uncommented line is always the address of your site.
#
# To use your own domain name (with automatic HTTPS), first make
# sure your domain's A/AAAA DNS records are properly pointed to
# this machine's public IP, then replace ":80" below with your
# domain name.

:80 {
	# Set this path to your site's directory.
	root * /usr/share/caddy

	# Enable the static file server.
	file_server

	# Another common task is to set up a reverse proxy:
	# reverse_proxy localhost:8080

	# Or serve a PHP site through php-fpm:
	# php_fastcgi localhost:9000
}

www.aaa.com {
	# Set this path to your site's directory.
	root * /usr/share/caddy

	# Enable the static file server.
	file_server

	# Another common task is to set up a reverse proxy:
	# reverse_proxy localhost:8080

	# Or serve a PHP site through php-fpm:
	# php_fastcgi localhost:9000
}
# Refer to the Caddy docs for more information:
# https://caddyserver.com/docs/caddyfile

网站文件目录位于/var/www/html