Ubuntu Manpage: gnt-os - Instance operating system administration

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] [--print-job-id]
[-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).

       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).

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