I'm running into an issue where I'm trying to import a self-signed certificate of one of our servers to one of our development boxes.
I've tried adding the .cer file from the server to /etc/pki/ca-trust/source (and have tried /anchor as well)
then running update-ca-trust extract
but with no success. It feels like I'm missing something when doing it, but after searching through Google and ServerFault, I haven't found anything that works for us.