Access to internal infrastructure from Kubernetes

Question

If I run Docker ( Docker for Desktop , 2.0.0.3 on Windows 10 ), then access to internal infrastructure and containers is fine. I can easily do docker pull internal.registry:5005/container:latest But ones I enable Kubernetes there, I completely lose an access to internal infrastructure and [Errno 113] Host is unreachable in Kubernetes itself or connect: no route to host from Docker appears.

I have tried several ways, including switching of NAT from DockerNAT to Default Switch . That one doesn't work without restart and restart changes it back to DockerNAT , so, no luck here. This option also seems not to work.

Answer 1

let's start from the basics form the official documentation :

1. Please make sure you meet all the prerequisites and all other instructions were met.

2. Also you can use this guide . It has more info with details pointing to what might have gone wrong in your case.

If the above won't help, there are few other things to consider:

1. In case you are using a virtual machine, make sure that the IP you are referring to is the one of the docker-engines' host and not the one on which the client is running.

2. Try to add tmpnginx in docker-compose .

3. Try to delete the pki directory in C:\\programdata\\DockerDesktop (first stop Docker, delete the dir and than start Docker). The directory will be recreated and k8s-app=kube-dns labels should work fine.

Please let me know if that helped.