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Install Caddy on Arch Linux

Updated Originally authored by Claudio Costa
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Before You Begin

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

  2. Complete the sections of the Securing Your Server guide to create a standard user account and harden SSH access.

  3. Register (purchase) your site’s domain name and follow our Manage DNS Records guide to point the domain to your Linode.

  4. Update your system:

    sudo pacman -Syu

What is Caddy?

Caddy is an open source HTTP/2 capable web server with automatic HTTPS written in Go. It supports a variety of web site technologies, includes security defaults, and is very easy to use.

Install Caddy

You can install Caddy on Arch Linux by using the caddy package. It comes with both of Caddy’s systemd service unit files, but does not enable them by default.

sudo pacman -Syu caddy

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
1
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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.

  3. Open a web browser and visit your domain. You should see the contents of the index.htmlpage that you created in the Add Web Content section.

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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