Install Caddy Web Server on Ubuntu 22.04

In this tutorial, we want to teach you How To Install Caddy Web Server on Ubuntu 22.04.

Caddy is a unique web server with a modern feature set. Think Nginx or Apache, but written in Go. With Caddy, you can serve your websites over HTTP/2. It can act as a reverse proxy and load balancer. Front your PHP apps with it. You can even deploy your site with git push.

How To Install Caddy Web Server on Ubuntu 22.04

To complete this guide, you must log in to your server as a non-root user with sudo privileges and set up a basic firewall. To do this, you can follow our guide the Initial Server Setup with Ubuntu 22.04.

Install Caddy on Ubuntu 22.04

By default, Caddy is not available in the default Ubuntu repository. So you need to add the Caddy repository on Ubuntu 22.04 with the commands below:

# sudo apt install -y 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

Then, update your local package index with the following command:

sudo apt update

Now use the command below to install Caddy on Ubuntu 22.04:

sudo apt install caddy

Here you can verify your Caddy installation with the following command:

sudo systemctl status caddy

In your output you will see:

Output
caddy.service - Caddy
Loaded: loaded (/lib/systemd/system/caddy.service; enabled; vendor preset:>
Active: active (running) since Sun 2022-08-13 11:07:46 CET; 27s ago
Docs: https://caddyserver.com/docs/
Main PID: 3308 (caddy)
Tasks: 8 (limit: 2282)
Memory: 7.1M
CGroup: /system.slice/caddy.service
└─3308 /usr/bin/caddy run --environ --config /etc/caddy/Caddyfile

Caddy serves websites using HTTP and HTTPS protocols, so you need to allow access to ports 80, and 443.

sudo ufw allow proto tcp from any to any port 80,443

Now you can type your server’s IP address in your web browser to see that your Caddy web server is installed on your server correctly.

http://server-IP-address

You will see the following page:

Caddy Web Server welcome screen

Enable PHP for Caddy Web server on Ubuntu 22.04

It is normal for a web server to have PHP support, at least.

First, install PHP and required packages on Ubuntu 22.04 with the command below:

sudo apt install php-fpm php-mysql php-curl php-gd php-mbstring php-common php-xml php-xmlrpc -y

Next, you need to edit the PHP-FPM configuration file. Open the file with your favorite text editor, here we use vi:

sudo vi /etc/php/8.1/fpm/pool.d/www.conf

At the file, find the lines below and change them to Caddy as shown below:

user = caddy
group = caddy
listen.owner = caddy
listen.group = caddy

When you are done, save and close the file.

To apply the changes, restart the PHP-FPM service:

sudo systemctl restart php8.1-fpm

Here you need to make some configuration changes to the Caddy web server main configuration file. Open the file with your favorite text editor, here we use vi:

sudo vi /etc/caddy/Caddyfile

By default, the file is very basic. Most of the file is commented on. Comment the few lines that are not by adding the # at the beginning of the lines and adding the following content to the file. Just remember to replace the domain with your domain name.

your-domain-name:80 {
    root * /usr/share/caddy/
    encode gzip zstd
    php_fastcgi unix//run/php/php8.1-fpm.sock
}

When you are done, save and close the file.

To apply the changes, restart the Caddy web server with the command below:

sudo systemctl restart caddy

Then, create a sample PHP file for Caddy with the following command:

sudo vi /usr/share/caddy/info.php

Add the following content to the file:

<?php

phpinfo();
?>

When you are done, save and close the file.

Here you can access the Caddy website by typing your domain name in your web browser followed by info.php:

http://your-domain-name/info.php

When you have finished reading your PHP info, it’s better to remove your PHP file for more security.

sudo rm -rf /usr/share/caddy/info.php

You can always rebuild your file every time you need it.

For more information, you can visit the Caddy Documentation page.

Conclusion

At this point, you learn to Install Caddy Web Server on Ubuntu 22.04.

Hope you enjoy it.

You may be interested in these articles:

How To Install XAMPP on Ubuntu 22.04

Install and Configure Apache Tomcat on Ubuntu 22.04

How To Install Apache Maven on Ubuntu 22.04

Install Symfony PHP Framework on Ubuntu 22.04

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