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From "Greg Mann (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MESOS-6048) Docker execution fails if agent's workdir is a relative path
Date Thu, 22 Sep 2016 14:19:20 GMT

    [ https://issues.apache.org/jira/browse/MESOS-6048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15513414#comment-15513414
] 

Greg Mann commented on MESOS-6048:
----------------------------------

[~klaus1982] yes, I agree! It would be really lovely to refactor {{Flags.load}}, I'm happy
to participate :) I see you created MESOS-3454 to track this, thanks!

> Docker execution fails if agent's workdir is a relative path
> ------------------------------------------------------------
>
>                 Key: MESOS-6048
>                 URL: https://issues.apache.org/jira/browse/MESOS-6048
>             Project: Mesos
>          Issue Type: Bug
>    Affects Versions: 1.0.0
>         Environment: openSUSE Tumbleweed, Docker 1.11.2
>            Reporter: Tobias Pfeiffer
>            Assignee: Greg Mann
>            Priority: Minor
>
> I start my mesos-agent.sh for development purposes like
> {code}
> sudo ./bin/mesos-agent.sh --master=127.0.0.1:5050 \
>   --work_dir=../../tmp --containerizers=docker \
>   --no-systemd_enable_support
> {code}
> And when executing a task via the Python API like
> {code}
> task.command.value = "echo foobar; hostname"
> task.container.type = 1 # docker
> task.container.docker.image = "phusion/baseimage:0.9.19"
> {code}
> then this fails with the following error message:
> {noformat}
> I0816 17:04:48.799820  9105 docker.cpp:809] Running docker -H unix:///var/run/docker.sock
run --cpu-shares 1024 --memory 1234567 -e MESOS_SANDBOX=/mnt/mesos/sandbox -e MESOS_CONTAINER_NAME=mesos-bc638eef-caf2-4778-a762-58826ea40364-S3.8386e2e0-6f40-47e2-9022-069b9f52b051
-v ../../tmp/slaves/bc638eef-caf2-4778-a762-58826ea40364-S3/frameworks/bc638eef-caf2-4778-a762-58826ea40364-0011/executors/0/runs/8386e2e0-6f40-47e2-9022-069b9f52b051:/mnt/mesos/sandbox
--net host --entrypoint /bin/sh --name mesos-bc638eef-caf2-4778-a762-58826ea40364-S3.8386e2e0-6f40-47e2-9022-069b9f52b051
phusion/baseimage:0.9.19 -c echo foobar; hostname
> docker: Error response from daemon: create ../../tmp/slaves/bc638eef-caf2-4778-a762-58826ea40364-S3/frameworks/bc638eef-caf2-4778-a762-58826ea40364-0011/executors/0/runs/8386e2e0-6f40-47e2-9022-069b9f52b051:
"../../tmp/slaves/bc638eef-caf2-4778-a762-58826ea40364-S3/frameworks/bc638eef-caf2-4778-a762-58826ea40364-0011/executors/0/runs/8386e2e0-6f40-47e2-9022-069b9f52b051"
includes invalid characters for a local volume name, only "[a-zA-Z0-9][a-zA-Z0-9_.-]" are
allowed.
> {noformat}
> In short: Relative paths are not allowed for mounting host directories into Docker containers.
I suggest that the agent should turn the work directory into an abspath before passing it
to the `-v` parameter of docker.



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