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It is now possible to generate general-purpose ECDSA certificates using our internal puppet CA and then use those for serving HTTPS traffic internally.
All of the following assumes you're operating on our pupppet active CA server.
Usage is pretty simple:
puppet-ecdsacert -a SAN1,SAN2,SAN3 CERTNAME
will take care of generating the cert, creating the CSR, submitting it to the puppet CA and signing it.
You can control the output directories with a config file, but by default the private key will be at:
and the public signed cert will be at
Once you've generated those files, you should copy the private key to the private puppet repo under /srv/private as a secret, and the public cert inside the main puppet repository as normal.