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       gnt-os - instance operating system administration


       gnt-os  command [ arguments... ]


       The  gnt-os is used for managing the list of available operating system
       flavours for the instances in the ganeti cluster.



       Gives the list of available/supported OS to use in the instances.  When
       creating the instance you can give the OS-name as an option.


       This  command will help you see why an installed OS is not available in
       the cluster. The list command shows only the  OS-es  that  the  cluster
       sees available on all nodes. It could be that some OS is missing from a
       node, or is only partially installed, and this command  will  show  the
       details of all the OSes and the reasons they are or are not valid.

       modify [ -H HYPERVISOR [ : option=value ... ] ] OS

       This  command  will allow you to modify OS parameters. At the moment we
       just support per-os-hypervisor settings. You can run modify -H with the
       same  syntax  as  in  gnt-cluster  init  to override default hypervisor
       parameters of the cluster for specified OS argument.

       Note: The OS doesn’t  have  to  exists.   This  allows  preseeding  the
       settings for OSes not yet known to gnt-os.


       Report  bugs  to  <URL:> or contact the
       developers using the ganeti mailing list <>.


       Ganeti  overview  and  specifications:  ganeti(7)  (general  overview),
       ganeti-os-interface(7) (guest OS definitions).

       Ganeti  commands:  gnt-cluster(8)  (cluster-wide  commands), gnt-job(8)
       (job-related  commands),  gnt-node(8)  (node-related  commands),   gnt-
       instance(8)  (instance  commands),  gnt-os(8) (guest OS commands), gnt-
       backup(8)  (instance  import/export  commands),   gnt-debug(8)   (debug

       Ganeti   daemons:  ganeti-watcher(8)  (automatic  instance  restarter),
       ganeti-cleaner(8) (job queue cleaner), ganeti-noded(8)  (node  daemon),
       ganeti-masterd(8)  (master daemon), ganeti-rapi(8) (remote API daemon).


       Copyright (C) 2006, 2007, 2008, 2009 Google Inc. Permission is  granted
       to  copy,  distribute  and/or modify under the terms of the GNU General
       Public License as published by the  Free  Software  Foundation;  either
       version 2 of the License, or (at your option) any later version.

       On  Debian systems, the complete text of the GNU General Public License
       can be found in /usr/share/common-licenses/GPL.