Error response from daemon: Get https://azure/v2/: dial tcp: lookup azure: no such host

Question

I am trying to pull docker image from docker hub to azure following this docs on docker https://docs.docker.com/cloud/aci-integration/.

when I enter the command:

 docker login azure

I get the error:

Error response from daemon: Get https://azure/v2/: dial tcp: lookup azure: no such host

I am not behind any vpn or proxy. I have tried some of the solutions mentioned in other threads like adding 8.8.8.8 & 8.8.8.4 in my resolv.conf and restarting docker daemon. But those solutions did not work.

Rainer

Any updates on the question? Does it solve your problem? If it works for you please accept it. – Motte

No, I could solve my problem with your answer. For now I stopped suing docker login azure command and instead use azure cli or portal. – Rainer

The Azure CLI command also does the same thing that creates a credential of the ACR for your local docker. If it works well, then the local docker will also work well. There must be something wrong you made. – Motte

I have had the same problem: docker login azure fails but az login works well. So it is clearly not a network problem. – Luciano

Same problem here on ubuntu 20.04, use az login instead and it works as of 16/9/2021 – Pachyderm

Answer 1

I am on Ubuntu 20.04 and I had the same problem. I fixed it by uninstalling the docker-compose package which ubuntu provided and using the install script as documented here. The Ubuntu package doesn't seem to have the Azure integration features built-in.

Luciano

I had docker composer already installed and still go the same error. – Rainer

how is docker-compose installed in your case? on which OS? – Luciano

I am running docker and composer on ubuntu 20.04. Docekr compose version: docker-compose version 1.29.2, build 5becea4c – Rainer

Answer 2

This indicates that you've missed one of the prerequisites. Most likely you are trying to run this from Docker CE rather than one of the Docker Desktop installs on Mac/Windows. Alternatively, replacing the docker binary with one from the docker-compose install should get this to work on Linux.

Retreat

I removed all the docker-ce packages, went to Docker Desktop and verified that docker was enabled for wsl. Closed and launched a new WSL terminal, and now it works. – Smallminded

Answer 3

The possible reason is that there is a policy or multiple policies in your network that block the traffic. So you can try to use another machine to log in to Azure or check the network.

Motte

I had the same problem in ubuntu 20.04, the fact that I could login with az login but not docker login azure suggestes that network is not the root cause – Pachyderm