[jira] [Created] (MESOS-3457) Add flag to disable hostname lookup

["Marco Massenzio (JIRA)" <ji...@apache.org>]

Marco Massenzio created MESOS-3457:
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             Summary: Add flag to disable hostname lookup
                 Key: MESOS-3457
                 URL: https://issues.apache.org/jira/browse/MESOS-3457
             Project: Mesos
          Issue Type: Improvement
            Reporter: Cody Maloney
            Assignee: Marco Massenzio


In testing / buildinging DCOS we've found that we need to set --hostname explicitly on the masters. For our uses IP and `hostname` must always be the same thing. 

More in general, under certain circumstances, dynamic lookup of {{hostname}}, while successful, provides undesirable results; we would also like, in those circumstances, be able to just set the hostname to the chosen
IP address (possibly set via the {{\-\- ip_discovery_command}} method).

We suggest adding a {{\-\-no-hostname-lookup}}. 
Note that we can introduce this flag as {{--hostname-lookup}} with a default to 'true' (which is the current semantics) and that way someone can do {{\-\-no-hostname-lookup}} or {{\-\-hostname-lookup=false}}.




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