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Install and Configure Caddy on CentOS 7

Updated Originally authored by Konstantin Kuchinin
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Caddy is a fast, open-source and security-focused web server written in Go. Caddy includes modern features such as support for virtual hosts, minification of static files, and HTTP/2. Caddy is also the first web-server that can obtain and renew SSL/TLS certificates automatically using Let’s Encrypt.

Before You Begin

  1. Familiarize yourself with our Getting Started guide and complete the steps for setting your Linode’s hostname and timezone.

  2. This guide uses sudo wherever possible. Complete the sections of our Securing Your Server guide to create a standard user account, harden SSH access and remove unnecessary network services.

  3. You need to register your site’s domain name and follow our Manage DNS Records guide to point your domain to your Linode.

  4. Update your system:

    sudo yum update

Install Caddy

  1. Install the yum-plugin-copr plugin and enable caddy:

    sudo yum install yum-plugin-copr
sudo yum copr enable @caddy/caddy

  2. Install Caddy:

    sudo yum install caddy

  3. To verify the installation of caddy type: caddy version An output similar to the following appears:

     v2.4.3 h1:Y1FaV2N4WO3rBqxSYA8UZsZTQdN+PwcoOcAiZTM8C0I=

Allow HTTP and HTTPS Connections

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

    sudo firewall-cmd --permanent --zone=public --add-service=http
    sudo firewall-cmd --permanent --zone=public --add-service=https
    sudo firewall-cmd --reload

Add Web Content

  1. Set up a home directory, web root, for your website:

    sudo mkdir -p /var/www/html/example.com

  2. Create a test page:

    echo '<!doctype html><head><title>Caddy Test Page</title></head><body><h1>Hello, World!</h1></body></html>' > /var/www/html/example.com/index.html

Configure the Caddyfile

Add your hostname and web root to the Caddy configuration. Use an editor of your choice and replace :80 with your domain name. Set the root directory of the site to /var/www/html/example.com Replace example.com with your site’s domain name:

File: /etc/caddy/Caddyfile
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example.com {
    root * /var/www/html/example.com
    file_server
}

Start and Enable the Caddy Service

  1. Enable the Caddy service:

    sudo systemctl start caddy

  2. Verify that the service is active:

     sudo systemctl status caddy

    An output similar to the following appears:

    ● caddy.service - Caddy
   Loaded: loaded (/usr/lib/systemd/system/caddy.service; disabled; vendor preset: disabled)
   Active: active (running) since Thu 2021-09-02 18:25:29 IST; 4s ago
     Docs: https://caddyserver.com/docs/
 Main PID: 19314 (caddy)
   CGroup: /system.slice/caddy.service
           └─19314 /usr/bin/caddy run --environ --config /etc/caddy/Caddyfile...

Sep 02 18:25:29 caddy caddy[19314]: SHELL=/sbin/nologin
Sep 02 18:25:29 caddy caddy[19314]: {"level":"info","ts":1630587329.1270738..."}
Sep 02 18:25:29 caddy systemd[1]: Started Caddy.
Sep 02 18:25:29 caddy caddy[19314]: {"level":"info","ts":1630587329.1316314...]}
Sep 02 18:25:29 caddy caddy[19314]: {"level":"info","ts":1630587329.1317837...0}
Sep 02 18:25:29 caddy caddy[19314]: {"level":"info","ts":1630587329.1324193..."}
Sep 02 18:25:29 caddy caddy[19314]: {"level":"info","ts":1630587329.1324632..."}
Sep 02 18:25:29 caddy caddy[19314]: {"level":"info","ts":1630587329.1325648..."}
Sep 02 18:25:29 caddy caddy[19314]: {"level":"info","ts":1630587329.1326034..."}
Sep 02 18:25:29 caddy caddy[19314]: {"level":"info","ts":1630587329.1326299..."}
Hint: Some lines were ellipsized, use -l to show in full.

To check the latest logs without truncation use sudo journalctl -u caddy --no-pager | less +G.

  1. Type your domain into a browser window on your local machine and you should see the test page. If everything is configured correctly, you should see a green lock symbol in the URL bar, indicating that your connection is secure.

More Information

You may wish to consult the following resources for additional information on this topic. While these are provided in the hope that they will be useful, please note that we cannot vouch for the accuracy or timeliness of externally hosted materials.

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