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https://issues.apache.org/jira/browse/LOG4J2-3045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17302185#comment-17302185
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Ralph Goers commented on LOG4J2-3045:
-------------------------------------
It has been a while since I worked with the docker module. However, when I
tested it I was using the Log4j Spring Cloud Config Client's sample application
which is configured as
[https://github.com/apache/logging-log4j2/blob/release-2.x/log4j-spring-cloud-config/log4j-spring-cloud-config-samples/log4j-spring-cloud-config-sample-application/docker/docker-compose.yml.]
When I tested I had it use socat to access the Docker APis. All the reading I
did seemed to indicate going directly to the unix.socket was not a good idea.
I started my app with "DOCKER_URI=http://socat:1234". After looking at the
DockerLookup it seems I never implemented support for the unix socket. It only
supports http at the moment.
> DOCKER_URI Value for log4j docker lookup
> ----------------------------------------
>
> Key: LOG4J2-3045
> URL: https://issues.apache.org/jira/browse/LOG4J2-3045
> Project: Log4j 2
> Issue Type: Question
> Components: Configuration
> Affects Versions: 2.14.1
> Reporter: Scott Selvia
> Priority: Minor
>
> I've been trying to use the docker lookup to log the container id and name;
> I've set the DOCKER_URI to various values including
> [unix:///var/run/docker.sock] and [http://localhost.|http://localhost./]
> The following curl command has worked perfectly (curl --unix-socket
> /var/run/docker.sock http:/localhost/containers/json) I mounted the location
> to the docker.sock to the container ->
> /var/run/docker.sock:/var/run/docker.sock. I've stepped through the docker
> lookup method either the creation of the URL is not correct or when set to
> [http://localhost|http://localhost/] or tcp://localhost:2375 I'm getting an
> access error.
>
> What is the correct value of the DOCKER_URI in order for the docker lookup
> method to pull the content for the container?
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