NAME

       hcheck - Cluster checker

SYNOPSIS

       hcheck {backend options...} [algorithm options...] [reporting options...]

       hcheck --version

       Backend options:

       { -m cluster | -L[ path ] |-t*data-file* | -I path }

       Algorithm options:

       [  --no-simulation  ]  [  --max-cpu  cpu-ratio ] [ --min-disk disk-ratio ] [ -l limit ] [ -e score ] [ -g
       delta ] [ --min-gain-limit threshold ] [ -O name... ] [ --no-disk-moves ] [ --no-instance-moves  ]  [  -U
       util-file ] [ --evac-mode ] [ --select-instances inst... ] [ --exclude-instances inst... ]

       Reporting options:

       [--machine-readable[=CHOICE] ] [ -p[ fields ] ] [ --print-instances ] [ -v... | -q ]

DESCRIPTION

       hcheck  is  the  cluster  checker.   It  prints  information  about cluster's health and checks whether a
       rebalance done using hbal would help.

       This information can be presented in both human-readable and machine-readable way.

       Note that it does not take any action, only performs a rebalance simulation if necessary.

       For more information about the algorithm details check hbal(1).

OPTIONS

       --no-simulation
              Only perform checks based on current cluster state, without trying to simulate rebalancing.

       For a detailed description about the options listed  above  have  a  look  at  htools(1),  hspace(1)  and
       hbal(1).

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.