I migrated our docker registry that was running on an external dedicated server into our Kubernetes cluster
Now I can still push and pull images to the registry from every external machine but when I try to deploy images from the registry to the Kubernetes cluster itself it is not able to pull it. I get the following error log:
Warning Failed 47s (x3 over 1m) kubelet, gke-kube-1-default-pool-c5e11d0f-zxm8 Failed to pull image "myregistry.example.com/appimage:1": rpc error: code = Unknown desc = Error response from daemon: Get https://myregistry.example.com/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
Warning Failed 47s (x3 over 1m) kubelet, gke-kube-1-default-pool-c5e11d0f-zxm8 Error: ErrImagePullThe registry is configured to be accessible via https://myregistry.example.com by a traefik ingress controller and it looks like Kubernetes is internally trying to take a different route?
It's an odd path, but it should work, but taking a wild guess it looks like a DNS issue. (It works for me connecting to an externally facing service). Some things to look at:
myregistry.example.com from any other running pod?/etc/resolv.conf look like?/etc/resolv.confmyregistry.example.com from your nodes?