94.3 Caddy Web Server

20220603

Caddy is a fast and simple to configure web server supporting https and handling the Let’s Encrypt certificates seamlessly.

wajig install debian-keyring debian-archive-keyring apt-transport-https
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list
wajig update 
wajig install caddy

To enable Caddy and to ensure it is started on boot, start it up, and check its status:

sudo systemctl enable caddy
sudo systemctl start caddy
sudo systemctl status caddy | cat

Browse to your server with as http://example.org (replacing example.org with your own domain which has an A Record with the IP address to your server) and you should now see the default Caddy home page.

You can check the current version of caddy with:

caddy version

The default Caddy configuration file is in /etc/caddy/Caddyfile and only sets up a http (non-encrypted) server based on files from /usr/share/caddy.

:80 {
    root * /usr/share/caddy
    file_server
}

A more common configuration is to support http with automatic redirect to the secure https using your own domain name, with files served from /var/www/html/. You can replace the whole contents of the default Caddyfile with the following. Be sure to replace example.org with your own domain name.

sudo emacs /etc/caddy/Caddyfile

example.org {
        root * /var/www/html
        file_server
}

Create a new web page at /var/www/html/index.html:

sudo mkdir -p /var/www/html
echo "Welcome" | sudo tee /var/www/html/index.html
sudo systemctl reload caddy

Visit your web site again to ensure https://example.org now works.

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