[jira] [Commented] (MESOS-6169) --docker_config doesn't work with amazon-ecr-credential-helper

["Jie Yu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-6169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15493962#comment-15493962 ] 

Jie Yu commented on MESOS-6169:
-------------------------------

[~gilbert] Can you take a look?

> --docker_config doesn't work with amazon-ecr-credential-helper
> --------------------------------------------------------------
>
>                 Key: MESOS-6169
>                 URL: https://issues.apache.org/jira/browse/MESOS-6169
>             Project: Mesos
>          Issue Type: Bug
>          Components: docker
>    Affects Versions: 1.0.0
>            Reporter: Mao Geng
>            Assignee: Gilbert Song
>
> We are using AWS ECR as docker registry and using https://github.com/awslabs/amazon-ecr-credential-helper to get credential automatically. 
> As amazon-ecr-credential-helper required, we set a .docker/config.json file like below: 
> {code}
> {
>     "credsStore": "ecr-login",
>     "auths": {
>         "xxxxxxxxxxxx.dkr.ecr.us-east-1.amazonaws.com": {
>         }
>     }
> }
> {code}
> According to the "credsStore" field, docker engine will invoke a "docker-credential-ecr-login" command (which we've installed into /usr/bin/) to get registry credential whenever required, for example when executing docker pull/push. 
> This works fine when we tar the .docker/config.json and use uris prarameter to pull the tar.gz file for every task using docker image. 
> But when I try the new --docker_config option, it doesn't work. The task failed to pull the image from ECR. The error message is 
> {code}
> Failed to launch container: Failed to run 'docker -H unix:///var/run/docker.sock pull xxxxxxxxxxxx.dkr.ecr.us-east-1.amazonaws.com/<image_name>:latest': exited with status 1; stderr='WARNING: Error loading config file:/tmp/28Vd2O/.dockercfg - The Auth config file is empty unauthorized: authentication required '
> {code}
> Checked the source at https://github.com/apache/mesos/blob/master/src/docker/docker.cpp, but don't understand why above errors message says loading a temp .dockercfg file, which doesn't exist btw. I assume mesos should pull the image using the config.json file I set to --docker_config, right? 



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