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From "Jan-Philip Gehrcke (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MESOS-7221) Container image fetcher: log URL when invoking curl
Date Wed, 08 Mar 2017 18:04:37 GMT
Jan-Philip Gehrcke created MESOS-7221:
-----------------------------------------

             Summary: Container image fetcher: log URL when invoking curl
                 Key: MESOS-7221
                 URL: https://issues.apache.org/jira/browse/MESOS-7221
             Project: Mesos
          Issue Type: Improvement
            Reporter: Jan-Philip Gehrcke


The [container image fetcher code|https://github.com/apache/mesos/blob/a310bcc10b872b44fe6083756030daa96c21d141/src/uri/fetchers/docker.cpp#L92]
invokes curl. When curl fails, all we see in the agent log is curl's stderr. For debugging,
it would be highly useful if the log also contained at least the URL that curl was invoked
with (if we can't log the entire curl command line).

For example when I launch a Marathon application with the following app definition, I'd like
to see a little bit of detail about the interaction between the Mesos agent and the Docker
hub/registry:

{code}
{
  "id": "/test2",
  "cmd": "sleep 99999",
  "cpus": 0.1,
  "mem": 50,
  "instances": 1,
  "container": {
    "docker": {
      "image": "alpine"
    },
  "type": "MESOS"
  }
}

{code}



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