gnt-os(8)

Name

gnt-os - Instance operating system administration

Synopsis

gnt-os {command} [arguments...]

DESCRIPTION

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

COMMANDS

  LIST

list [--no-headers]

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.

Note that hidden or blacklisted OSes are not displayed by this command, use diagnose for showing those.

  DIAGNOSE

diagnose

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.

  INFO

info

This command will list detailed information about each OS available in the cluster, including its validity status, the supported API versions, the supported parameters (if any) and their documentations, etc.

  MODIFY

modify [--submit] [-H HYPERVISOR:option=value[,...]]
[--hidden=yes|no] [--blacklisted=yes|no]
{OS}

This command will allow you to modify OS parameters.

To modify the per-OS hypervisor parameters (which override the global hypervisor parameters), 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.

To modify the hidden and blacklisted states of an OS, pass the options --hiddenyes|no, or respectively --blacklisted .... The 'hidden' state means that an OS won't be listed by default in the OS list, but is available for installation. The 'blacklisted' state means that the OS is not listed and is also not allowed for new instance creations (but can be used for reinstalling old instances).

Note: The given operating system doesn't have to exist. This allows preseeding the settings for operating systems not yet known to gnt-os.

See ganeti(7) for a description of --submit and other common options.

REPORTING BUGS

Report bugs to project website (http://code.google.com/p/ganeti/) or contact the developers using the Ganeti mailing list (ganeti@googlegroups.com).

SEE ALSO

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

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-storage(8) (storage commands), gnt-group(8) (node group commands), gnt-backup(8) (instance import/export commands), gnt-debug(8) (debug commands).

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).

Ganeti htools: htools(1) (generic binary), hbal(1) (cluster balancer), hspace(1) (capacity calculation), hail(1) (IAllocator plugin), hscan(1) (data gatherer from remote clusters), hinfo(1) (cluster information printer), mon-collector(7) (data collectors interface).

COPYRIGHT

Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 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.