Caddy
Caddy is a HTTP/2 capable web server with automatic HTTPS.
Installation
The example snippet below will run Caddy on http://localhost and serving an example.html page.
/etc/nixos/configuration.nix
services.caddy = {
enable = true;
extraConfig = ''
http://localhost {
encode gzip
file_server
root * ${
pkgs.runCommand "testdir" {} ''
mkdir "$out"
echo hello world > "$out/example.html"
''
}
}
'';
};
Configuration examples
SSL
Caddy will automatically try to acquire SSL certificates for the specified domain, in this example example.org. This requires you to configure the DNS records of your domain correctly, which should point to the address of your Caddy server. The firewall ports 80 and 443 needs to be opened.
/etc/nixos/configuration.nix
caddy = {
enable = true;
virtualHosts."example.org".extraConfig = ''
encode gzip
file_server
root * ${
pkgs.runCommand "testdir" {} ''
mkdir "$out"
echo hello world > "$out/example.html"
''
}
'';
};
Reverse proxy
The following snippet creates a reverse proxy for the domain example.org, redirecting all requests to http://10.25.40.6
/etc/nixos/configuration.nix
caddy = {
enable = true;
virtualHosts."example.org".extraConfig = ''
reverse_proxy http://10.25.40.6
'';
};
Redirect
Redirecting example.org and old.example.org to www.example.org
caddy.virtualHosts."example.org" = {
extraConfig = ''
redir https://www.example.org
'';
serverAlias = [ "old.example.org" ];
};
PHP FastCGI
Serving a PHP application in /var/www on localhost.
services.caddy = {
enable = true;
virtualHosts."http://localhost" = {
extraConfig = ''
root * /var/www
file_server
php_fastcgi unix/var/run/phpfpm/localhost.sock
'';
};
};
You'll need a PHP-FPM socket listening on Unix socket path /var/run/phpfpm/localhost.sock.