Autocert

Autocert is a workaround to allow secure installation of Let's Encrypt TLS certificates to IEEE's shared Namecheap server without needing root access on the server.

Running Locally

Although originally intended to be run as an AWS Lambda, Autocert can be run as a cronjob on a Raspberry Pi or simply locally on any Linux machine with root access.

To run locally, you will need a file keys.py with the following content:

CPANEL_SERVER = '<server name and port>'
CPANEL_USERNAME = '<username>'
CPANEL_TOKEN = '<api token>'

CERT_EMAIL = '[email protected]' # To be associated with cert
WEBROOTS = {
    '<domain name>': f'/home/{CPANEL_USERNAME}/path/to/webroot',
    # Add a new entry for each domain that needs a cert
}

You will also need the certbot package, which you can install with:

pip install certbot

Then run

python lambda_function.py

This will generate new certificates for new domains and renew old certificates on previously secured domains, installing them on the server. Since Let's Encrypt certificates are only valid for 90 days, Autocert should ideally be run every two months.