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.