Get a developer certificate
In order to build with Greenlight, you need a developer certificate. These are custom certificates that developers can bundle with their application, and that allow registering new nodes.
You can create an account on the Greenlight Developer Console and download the zip file containing the certificate.
Storing the Certificate
The certificate is ditributed as two x509 PEM files bundled into a zip file:
client.crt: this is the public certificateclient-key.pem: this is the private key matching the above certificate and is used to encrypt the transport and authenticate as a partner to the Scheduler.
Consider these files as secrets. You should not include them in your code-repository but store them somewhere else instead.