[jira] [Assigned] (MESOS-5123) Docker task may fail if path to agent work_dir is relative.

["Klaus Ma (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MESOS-5123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Klaus Ma reassigned MESOS-5123:
-------------------------------

    Assignee: Klaus Ma

> Docker task may fail if path to agent work_dir is relative. 
> ------------------------------------------------------------
>
>                 Key: MESOS-5123
>                 URL: https://issues.apache.org/jira/browse/MESOS-5123
>             Project: Mesos
>          Issue Type: Improvement
>          Components: docker
>    Affects Versions: 1.0.0
>            Reporter: Alexander Rukletsov
>            Assignee: Klaus Ma
>              Labels: docker, documentation, mesosphere
>
> When a local folder for agent’s {{\-\-work_dir}} is specified (e.g., {{\-\-work_dir=w/s}}) docker complains that there are forbidden symbols in a *local* volume name. Specifying an absolute path (e.g., {{\-\-work_dir=/tmp}}) solves the problem.
> Docker error observed:
> {noformat}
> docker: Error response from daemon: create w/s/slaves/33b8fe47-e9e0-468a-83a6-98c1e3537e59-S1/frameworks/33b8fe47-e9e0-468a-83a6-98c1e3537e59-0001/executors/docker-test/runs/3cc5cb04-d0a9-490e-94d5-d446b66c97cc: volume name invalid: "w/s/slaves/33b8fe47-e9e0-468a-83a6-98c1e3537e59-S1/frameworks/33b8fe47-e9e0-468a-83a6-98c1e3537e59-0001/executors/docker-test/runs/3cc5cb04-d0a9-490e-94d5-d446b66c97cc" includes invalid characters for a local volume name, only "[a-zA-Z0-9][a-zA-Z0-9_.-]" are allowed.
> {noformat}
> First off, it is not obvious that Mesos always creates a volume for the sandbox. We may want to document it.
> Second, it's hard to understand that local {{work_dir}} can trigger forbidden symbols error in docker. Does it make sense to check it during agent launch if docker containerizer is enabled? Or reject docker tasks during task validation?



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