Hey team - Is it possible to use 2 private registries within my registries.yaml? So far I can not make this work (both are to dockerhub)

If they are both mirroring docker hub, just list them both in the endpoint list

Hmm, I did try this. but it failed. I'd need to check the log. Is this the right format?

configs:
  <http://registry-1.docker.io|registry-1.docker.io>:
    auth:
      username: 1
      password: pass
  <http://registry-1.docker.io|registry-1.docker.io>:
    auth:
      username: 2
      password: word

That's not two registries, that's just configuring auth for docker.io twice. You need to configure the endpoints section to list your registries as endpoints for docker.io, and then configure auth for your registries.

We have 2 docker hub orgs. One for each platform we host. Our clusters, need to be able to pull private images from both these private docker hub repositories. This is a temporary situation, as we have just acquired one of these platforms from a acquisition. I have plans in place to merge the CI/CD for the two platforms.... but that's going to be 6-8 months away.

Ah. That is not what mirrors are for then.

Ouch, OK. I was trying to avoid managing lots of credentials between all the many namespaces.