IZ2632: add support for dynamic host groups

[roland]

[Imported from gridengine issuezilla ​http://gridengine.sunsource.net/issues/show_bug.cgi?id=2632]

        Issue #:      2632             Platform:     Sun           Reporter: roland (roland)
       Component:     gridengine          OS:        All
     Subcomponent:    qmaster          Version:      6.0              CC:    None defined
        Status:       NEW              Priority:     P3
      Resolution:                     Issue type:    ENHANCEMENT
                                   Target milestone: ---
      Assigned to:    ernst (ernst)
      QA Contact:     ernst
          URL:
       * Summary:     add support for dynamic host groups
   Status whiteboard:
      Attachments:

     Issue 2632 blocks:
   Votes for issue 2632:


   Opened: Wed Jun 25 01:24:00 -0700 2008 
------------------------


It would be good if grid engine would support dynamic host groups. Hosts would
dynamically added and removed from this host group defined by simple load report
matching syntax.

For example all hosts with arch=lx24-* goes into hgroup @lx24

   ------- Additional comments from roland Wed Jun 25 01:24:45 -0700 2008 -------
changed issue type

   ------- Additional comments from roland Wed Jun 25 01:28:34 -0700 2008 -------
This feature would help a lot to manage big clusters.

For example hosts can be sorted automatically by rack if the hostname naming
schema is set up properly (which is mostly the case). For example all hosts with
hostname=rack1-node* goes into @rack1

Or all nodes which no longer reports alive=1 (default is 0) goes into hostgroup
@outage.