Caddy Web Server/Proxy

Install Caddy to a service

Most people use Caddy as a web server or proxy, but at its core, Caddy is a server of servers. With the requisite modules, it can take on the role of any long-running process!

Configuration is both dynamic and exportable with Caddy's API. Although no config files required, you can still use them; most people's favorite way of configuring Caddy is using the Caddyfile. The format of the config document takes many forms with config adapters, but Caddy's native config language is JSON.

Caddy compiles for all major platforms and has no runtime dependencies.

Install Caddy on to Ubuntu system

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
sudo apt update
sudo apt install caddy

Configuring Caddyfile

Edit the config file which will be installed in /etc/caddy/Caddyfile

You can either comment all lines with #.

Or just wipe whole content and create your own

Example Configuration

https://rpc.juno.chaintools.tech { 
  reverse_proxy http://<RPC-SERVER-IP>:<PORT> { 
     header_down Access-Control-Allow-Origin * 
  } log { 
         output file /var/log/caddy/rpc.juno.chaintools.tech.log
         } 
} 
 
https://api.juno.chaintools.tech { 
   reverse_proxy http://<API-SERVER-IP>:<PORT> { 
      header_down Access-Control-Allow-Origin * 
  } log { 
         output file /var/log/caddy/api.juno.chaintools.tech.log 
         } 
}
  
https://grpc.juno.chaintools.tech {
   reverse_proxy {
      to h2c://<GRPC-SERVER-IP>:<PORT>
      transport http  {
         versions h2c 2
      }
   }
   log {
       output file /var/log/caddy/grpc.juno.chaintools.tech.log
   }
}

Create a service file for Caddy

cat /lib/systemd/system/caddy.service

# caddy.service
#
# For using Caddy with a config file.
#
# Make sure the ExecStart and ExecReload commands are correct
# for your installation.
#
# See https://caddyserver.com/docs/install for instructions.
#
# WARNING: This service does not use the --resume flag, so if you
# use the API to make changes, they will be overwritten by the
# Caddyfile next time the service is restarted. If you intend to
# use Caddy's API to configure it, add the --resume flag to the
# `caddy run` command or use the caddy-api.service file instead.

[Unit]
Description=Caddy
Documentation=https://caddyserver.com/docs/
After=network.target network-online.target
Requires=network-online.target

[Service]
Type=notify
User=caddy
Group=caddy
ExecStart=/usr/bin/caddy run --environ --config /etc/caddy/Caddyfile

Once you are happy with the config and service file you can now start.

sudo systemctl daemon-reload

sudo systemctl start caddy