Clone the letsencrypt cli.

```
git clone https://github.com/letsencrypt/letsencrypt
cd letsencrypt
```

Request a new certificate for your domain manually.

```
./letsencrypt-auto certonly -a manual -d janikvonrotz.ch
```

This install dependencies, prompt a few things and finally output something like this:

```
Create a file containing just this data:

Ye_NZDAneJxd6qAZ-rYA69PaC5zX7MvPoL2RCAylRjI.vrz1sjWRICB9gRaBBY4j9RorDIZ-3MMinwKOrnzFyak

And make it available on your web server at this URL:

http://janikvonrotz.ch/.well-known/acme-challenge/Ye_NZDAneJxd6qAZ-rYA69PaC5zX7MvPoL2RCAylRjI
```

Do exactly as told.

If you are using hugo as CMS, simply create the file and folder strucuture inside the static folder.

Check with curl before moving on with the challenge.

```
curl http://janikvonrotz.ch/.well-known/acme-challenge/Ye_NZDAneJxd6qAZ-rYA69PaC5zX7MvPoL2RCAylRjI
```

Finish the challenge and you should find the certs and key here: `/etc/letsencrypt/live/janikvonrotz.ch`