Provided by: ceph-common_14.2.2-0ubuntu3_amd64 bug

NAME

       ceph - ceph administration tool

SYNOPSIS

       ceph auth [ add | caps | del | export | get | get-key | get-or-create | get-or-create-key | import | list | print-key | print_key ] ...

       ceph compact

       ceph config-key [ rm | exists | get | ls | dump | set ] ...

       ceph daemon <name> | <path> <command> ...

       ceph daemonperf <name> | <path> [ interval [ count ] ]

       ceph df {detail}

       ceph fs [ ls | new | reset | rm ] ...

       ceph fsid

       ceph health {detail}

       ceph heap [ dump | start_profiler | stop_profiler | release | get_release_rate | set_release_rate | stats ] ...

       ceph injectargs <injectedargs> [ <injectedargs>... ]

       ceph log <logtext> [ <logtext>... ]

       ceph mds [ compat | fail | rm | rmfailed | set_state | stat | repaired ] ...

       ceph mon [ add | dump | getmap | remove | stat ] ...

       ceph mon_status

       ceph osd [ blacklist | blocked-by | create | new | deep-scrub | df | down | dump | erasure-code-profile | find | getcrushmap | getmap | getmaxosd | in | ls | lspools | map | metadata | ok-to-stop | out | pause | perf | pg-temp | force-create-pg | primary-affinity | primary-temp | repair | reweight | reweight-by-pg | rm | destroy | purge | safe-to-destroy | scrub | set | setcrushmap | setmaxosd  | stat | tree | unpause | unset ] ...

       ceph osd crush [ add | add-bucket | create-or-move | dump | get-tunable | link | move | remove | rename-bucket | reweight | reweight-all | reweight-subtree | rm | rule | set | set-tunable | show-tunables | tunables | unlink ] ...

       ceph osd pool [ create | delete | get | get-quota | ls | mksnap | rename | rmsnap | set | set-quota | stats ] ...

       ceph osd pool application [ disable | enable | get | rm | set ] ...

       ceph osd tier [ add | add-cache | cache-mode | remove | remove-overlay | set-overlay ] ...

       ceph pg [ debug | deep-scrub | dump | dump_json | dump_pools_json | dump_stuck | getmap | ls | ls-by-osd | ls-by-pool | ls-by-primary | map | repair | scrub | stat ] ...

       ceph quorum [ enter | exit ]

       ceph quorum_status

       ceph report { <tags> [ <tags>... ] }

       ceph scrub

       ceph status

       ceph sync force {--yes-i-really-mean-it} {--i-know-what-i-am-doing}

       ceph tell <name (type.id)> <command> [options...]

       ceph version

DESCRIPTION

       ceph  is  a  control utility which is used for manual deployment and maintenance of a Ceph
       cluster. It provides a diverse set of commands that allows deployment of  monitors,  OSDs,
       placement groups, MDS and overall maintenance, administration of the cluster.

COMMANDS

   auth
       Manage  authentication  keys.  It  is  used for adding, removing, exporting or updating of
       authentication keys for a particular  entity such as  a  monitor  or  OSD.  It  uses  some
       additional subcommands.

       Subcommand add adds authentication info for a particular entity from input file, or random
       key if no input is given and/or any caps specified in the command.

       Usage:

          ceph auth add <entity> {<caps> [<caps>...]}

       Subcommand caps updates caps for name from caps specified in the command.

       Usage:

          ceph auth caps <entity> <caps> [<caps>...]

       Subcommand del deletes all caps for name.

       Usage:

          ceph auth del <entity>

       Subcommand export writes keyring for requested entity, or master keyring if none given.

       Usage:

          ceph auth export {<entity>}

       Subcommand get writes keyring file with requested key.

       Usage:

          ceph auth get <entity>

       Subcommand get-key displays requested key.

       Usage:

          ceph auth get-key <entity>

       Subcommand get-or-create adds authentication info for a particular entity from input file,
       or random key if no input given and/or any caps specified in the command.

       Usage:

          ceph auth get-or-create <entity> {<caps> [<caps>...]}

       Subcommand get-or-create-key gets or adds key for name from system/caps pairs specified in
       the command.  If key already exists, any given caps must match the existing caps for  that
       key.

       Usage:

          ceph auth get-or-create-key <entity> {<caps> [<caps>...]}

       Subcommand import reads keyring from input file.

       Usage:

          ceph auth import

       Subcommand ls lists authentication state.

       Usage:

          ceph auth ls

       Subcommand print-key displays requested key.

       Usage:

          ceph auth print-key <entity>

       Subcommand print_key displays requested key.

       Usage:

          ceph auth print_key <entity>

   compact
       Causes compaction of monitor's leveldb storage.

       Usage:

          ceph compact

   config-key
       Manage configuration key. It uses some additional subcommands.

       Subcommand rm deletes configuration key.

       Usage:

          ceph config-key rm <key>

       Subcommand exists checks for configuration keys existence.

       Usage:

          ceph config-key exists <key>

       Subcommand get gets the configuration key.

       Usage:

          ceph config-key get <key>

       Subcommand ls lists configuration keys.

       Usage:

          ceph config-key ls

       Subcommand dump dumps configuration keys and values.

       Usage:

          ceph config-key dump

       Subcommand set puts configuration key and value.

       Usage:

          ceph config-key set <key> {<val>}

   daemon
       Submit admin-socket commands.

       Usage:

          ceph daemon {daemon_name|socket_path} {command} ...

       Example:

          ceph daemon osd.0 help

   daemonperf
       Watch performance counters from a Ceph daemon.

       Usage:

          ceph daemonperf {daemon_name|socket_path} [{interval} [{count}]]

   df
       Show cluster's free space status.

       Usage:

          ceph df {detail}

   features
       Show  the  releases  and  features  of  all connected daemons and clients connected to the
       cluster, along with the numbers of them  in  each  bucket  grouped  by  the  corresponding
       features/releases. Each release of Ceph supports a different set of features, expressed by
       the features bitmask. New cluster features require that clients support  the  feature,  or
       else  they  are  not  allowed  to  connect  to  these  new  features.  As  new features or
       capabilities are enabled after an upgrade, older clients are prevented from connecting.

       Usage:

          ceph features

   fs
       Manage cephfs filesystems. It uses some additional subcommands.

       Subcommand ls to list filesystems

       Usage:

          ceph fs ls

       Subcommand new to make a new filesystem using named pools <metadata> and <data>

       Usage:

          ceph fs new <fs_name> <metadata> <data>

       Subcommand reset is used for disaster recovery only: reset to a single-MDS map

       Usage:

          ceph fs reset <fs_name> {--yes-i-really-mean-it}

       Subcommand rm to disable the named filesystem

       Usage:

          ceph fs rm <fs_name> {--yes-i-really-mean-it}

   fsid
       Show cluster's FSID/UUID.

       Usage:

          ceph fsid

   health
       Show cluster's health.

       Usage:

          ceph health {detail}

   heap
       Show heap usage info (available only if compiled with tcmalloc)

       Usage:

          ceph heap dump|start_profiler|stop_profiler|stats

       Subcommand release to make TCMalloc to releases no-longer-used memory back to  the  kernel
       at once.

       Usage:

          ceph heap release

       Subcommand  (get|set)_release_rate  get  or set the TCMalloc memory release rate. TCMalloc
       releases no-longer-used memory back to the kernel gradually. the rate controls how quickly
       this  happens.   Increase  this  setting  to  make  TCMalloc  to return unused memory more
       frequently. 0 means never return memory to system, 1  means  wait  for  1000  pages  after
       releasing a page to system. It is 1.0 by default..

       Usage:

          ceph heap get_release_rate|set_release_rate {<val>}

   injectargs
       Inject configuration arguments into monitor.

       Usage:

          ceph injectargs <injected_args> [<injected_args>...]

   log
       Log supplied text to the monitor log.

       Usage:

          ceph log <logtext> [<logtext>...]

   mds
       Manage   metadata  server  configuration  and  administration.  It  uses  some  additional
       subcommands.

       Subcommand compat manages compatible features. It uses some additional subcommands.

       Subcommand rm_compat removes compatible feature.

       Usage:

          ceph mds compat rm_compat <int[0-]>

       Subcommand rm_incompat removes incompatible feature.

       Usage:

          ceph mds compat rm_incompat <int[0-]>

       Subcommand show shows mds compatibility settings.

       Usage:

          ceph mds compat show

       Subcommand fail forces mds to status fail.

       Usage:

          ceph mds fail <role|gid>

       Subcommand rm removes inactive mds.

       Usage:

          ceph mds rm <int[0-]> <name> (type.id)>

       Subcommand rmfailed removes failed mds.

       Usage:

          ceph mds rmfailed <int[0-]>

       Subcommand set_state sets mds state of <gid> to <numeric-state>.

       Usage:

          ceph mds set_state <int[0-]> <int[0-20]>

       Subcommand stat shows MDS status.

       Usage:

          ceph mds stat

       Subcommand repaired mark a damaged MDS rank as no longer damaged.

       Usage:

          ceph mds repaired <role>

   mon
       Manage monitor configuration and administration. It uses some additional subcommands.

       Subcommand add adds new monitor named <name> at <addr>.

       Usage:

          ceph mon add <name> <IPaddr[:port]>

       Subcommand dump dumps formatted monmap (optionally from epoch)

       Usage:

          ceph mon dump {<int[0-]>}

       Subcommand getmap gets monmap.

       Usage:

          ceph mon getmap {<int[0-]>}

       Subcommand remove removes monitor named <name>.

       Usage:

          ceph mon remove <name>

       Subcommand stat summarizes monitor status.

       Usage:

          ceph mon stat

   mon_status
       Reports status of monitors.

       Usage:

          ceph mon_status

   mgr
       Ceph manager daemon configuration and management.

       Subcommand dump dumps the latest MgrMap, which describes the active  and  standby  manager
       daemons.

       Usage:

          ceph mgr dump

       Subcommand  fail  will  mark a manager daemon as failed, removing it from the manager map.
       If it is the active manager daemon a standby will take its place.

       Usage:

          ceph mgr fail <name>

       Subcommand module ls will list currently enabled manager modules (plugins).

       Usage:

          ceph mgr module ls

       Subcommand module enable will enable a manager module.  Available modules are included  in
       MgrMap and visible via mgr dump.

       Usage:

          ceph mgr module enable <module>

       Subcommand module disable will disable an active manager module.

       Usage:

          ceph mgr module disable <module>

       Subcommand  metadata  will  report  metadata  about all manager daemons or, if the name is
       specified, a single manager daemon.

       Usage:

          ceph mgr metadata [name]

       Subcommand versions will report a count of running daemon versions.

       Usage:

          ceph mgr versions

       Subcommand count-metadata will report a count of any daemon metadata field.

       Usage:

          ceph mgr count-metadata <field>

   osd
       Manage OSD configuration and administration. It uses some additional subcommands.

       Subcommand blacklist manage blacklisted clients. It uses some additional subcommands.

       Subcommand add add <addr> to blacklist (optionally until <expire> seconds from now)

       Usage:

          ceph osd blacklist add <EntityAddr> {<float[0.0-]>}

       Subcommand ls show blacklisted clients

       Usage:

          ceph osd blacklist ls

       Subcommand rm remove <addr> from blacklist

       Usage:

          ceph osd blacklist rm <EntityAddr>

       Subcommand blocked-by prints a histogram of which OSDs are blocking their peers

       Usage:

          ceph osd blocked-by

       Subcommand create creates new osd (with optional UUID and ID).

       This command is DEPRECATED as of the Luminous release, and will be  removed  in  a  future
       release.

       Subcommand new should instead be used.

       Usage:

          ceph osd create {<uuid>} {<id>}

       Subcommand  new  can be used to create a new OSD or to recreate a previously destroyed OSD
       with a specific id. The new OSD will have the specified uuid, and the  command  expects  a
       JSON  file  containing  the  base64  cephx key for auth entity client.osd.<id>, as well as
       optional base64 cepx key for dm-crypt lockbox access and  a  dm-crypt  key.  Specifying  a
       dm-crypt requires specifying the accompanying lockbox cephx key.

       Usage:

          ceph osd new {<uuid>} {<id>} -i {<params.json>}

       The  parameters  JSON  file is optional but if provided, is expected to maintain a form of
       the following format:

          {
              "cephx_secret": "AQBWtwhZdBO5ExAAIDyjK2Bh16ZXylmzgYYEjg==",
              "crush_device_class": "myclass"
          }

       Or:

          {
              "cephx_secret": "AQBWtwhZdBO5ExAAIDyjK2Bh16ZXylmzgYYEjg==",
              "cephx_lockbox_secret": "AQDNCglZuaeVCRAAYr76PzR1Anh7A0jswkODIQ==",
              "dmcrypt_key": "<dm-crypt key>",
              "crush_device_class": "myclass"
          }

       Or:

          {
              "crush_device_class": "myclass"
          }

       The "crush_device_class" property is optional. If specified, it will set the initial CRUSH
       device class for the new OSD.

       Subcommand crush is used for CRUSH management. It uses some additional subcommands.

       Subcommand  add  adds or updates crushmap position and weight for <name> with <weight> and
       location <args>.

       Usage:

          ceph osd crush add <osdname (id|osd.id)> <float[0.0-]> <args> [<args>...]

       Subcommand add-bucket adds no-parent (probably root) crush bucket <name> of type <type>.

       Usage:

          ceph osd crush add-bucket <name> <type>

       Subcommand create-or-move creates entry or moves existing entry for <name> <weight>  at/to
       location <args>.

       Usage:

          ceph osd crush create-or-move <osdname (id|osd.id)> <float[0.0-]> <args>
          [<args>...]

       Subcommand dump dumps crush map.

       Usage:

          ceph osd crush dump

       Subcommand get-tunable get crush tunable straw_calc_version

       Usage:

          ceph osd crush get-tunable straw_calc_version

       Subcommand link links existing entry for <name> under location <args>.

       Usage:

          ceph osd crush link <name> <args> [<args>...]

       Subcommand move moves existing entry for <name> to location <args>.

       Usage:

          ceph osd crush move <name> <args> [<args>...]

       Subcommand remove removes <name> from crush map (everywhere, or just at <ancestor>).

       Usage:

          ceph osd crush remove <name> {<ancestor>}

       Subcommand rename-bucket renames bucket <srcname> to <dstname>

       Usage:

          ceph osd crush rename-bucket <srcname> <dstname>

       Subcommand reweight change <name>'s weight to <weight> in crush map.

       Usage:

          ceph osd crush reweight <name> <float[0.0-]>

       Subcommand reweight-all recalculate the weights for the tree to ensure they sum correctly

       Usage:

          ceph osd crush reweight-all

       Subcommand reweight-subtree changes all leaf items beneath <name> to <weight> in crush map

       Usage:

          ceph osd crush reweight-subtree <name> <weight>

       Subcommand rm removes <name> from crush map (everywhere, or just at <ancestor>).

       Usage:

          ceph osd crush rm <name> {<ancestor>}

       Subcommand rule is used for creating crush rules. It uses some additional subcommands.

       Subcommand  create-erasure  creates  crush rule <name> for erasure coded pool created with
       <profile> (default default).

       Usage:

          ceph osd crush rule create-erasure <name> {<profile>}

       Subcommand create-simple creates crush rule <name> to start from <root>, replicate  across
       buckets  of type <type>, using a choose mode of <firstn|indep> (default firstn; indep best
       for erasure pools).

       Usage:

          ceph osd crush rule create-simple <name> <root> <type> {firstn|indep}

       Subcommand dump dumps crush rule <name> (default all).

       Usage:

          ceph osd crush rule dump {<name>}

       Subcommand ls lists crush rules.

       Usage:

          ceph osd crush rule ls

       Subcommand rm removes crush rule <name>.

       Usage:

          ceph osd crush rule rm <name>

       Subcommand set used alone, sets crush map from input file.

       Usage:

          ceph osd crush set

       Subcommand set with osdname/osd.id update crushmap  position  and  weight  for  <name>  to
       <weight> with location <args>.

       Usage:

          ceph osd crush set <osdname (id|osd.id)> <float[0.0-]> <args> [<args>...]

       Subcommand  set-tunable set crush tunable <tunable> to <value>.  The only tunable that can
       be set is straw_calc_version.

       Usage:

          ceph osd crush set-tunable straw_calc_version <value>

       Subcommand show-tunables shows current crush tunables.

       Usage:

          ceph osd crush show-tunables

       Subcommand tree shows the crush buckets and items in a tree view.

       Usage:

          ceph osd crush tree

       Subcommand tunables sets crush tunables values to <profile>.

       Usage:

          ceph osd crush tunables legacy|argonaut|bobtail|firefly|hammer|optimal|default

       Subcommand unlink unlinks <name> from crush map (everywhere, or just at <ancestor>).

       Usage:

          ceph osd crush unlink <name> {<ancestor>}

       Subcommand df shows OSD utilization

       Usage:

          ceph osd df {plain|tree}

       Subcommand deep-scrub initiates deep scrub on specified osd.

       Usage:

          ceph osd deep-scrub <who>

       Subcommand down sets osd(s) <id> [<id>...] down.

       Usage:

          ceph osd down <ids> [<ids>...]

       Subcommand dump prints summary of OSD map.

       Usage:

          ceph osd dump {<int[0-]>}

       Subcommand erasure-code-profile is used for managing the erasure code  profiles.  It  uses
       some additional subcommands.

       Subcommand get gets erasure code profile <name>.

       Usage:

          ceph osd erasure-code-profile get <name>

       Subcommand ls lists all erasure code profiles.

       Usage:

          ceph osd erasure-code-profile ls

       Subcommand rm removes erasure code profile <name>.

       Usage:

          ceph osd erasure-code-profile rm <name>

       Subcommand  set creates erasure code profile <name> with [<key[=value]> ...]  pairs. Add a
       --force at the end to override an existing profile (IT IS RISKY).

       Usage:

          ceph osd erasure-code-profile set <name> {<profile> [<profile>...]}

       Subcommand find find osd <id> in the CRUSH map and shows its location.

       Usage:

          ceph osd find <int[0-]>

       Subcommand getcrushmap gets CRUSH map.

       Usage:

          ceph osd getcrushmap {<int[0-]>}

       Subcommand getmap gets OSD map.

       Usage:

          ceph osd getmap {<int[0-]>}

       Subcommand getmaxosd shows largest OSD id.

       Usage:

          ceph osd getmaxosd

       Subcommand in sets osd(s) <id> [<id>...] in.

       Usage:

          ceph osd in <ids> [<ids>...]

       Subcommand lost marks osd as permanently lost. THIS DESTROYS  DATA  IF  NO  MORE  REPLICAS
       EXIST, BE CAREFUL.

       Usage:

          ceph osd lost <int[0-]> {--yes-i-really-mean-it}

       Subcommand ls shows all OSD ids.

       Usage:

          ceph osd ls {<int[0-]>}

       Subcommand lspools lists pools.

       Usage:

          ceph osd lspools {<int>}

       Subcommand map finds pg for <object> in <pool>.

       Usage:

          ceph osd map <poolname> <objectname>

       Subcommand metadata fetches metadata for osd <id>.

       Usage:

          ceph osd metadata {int[0-]} (default all)

       Subcommand out sets osd(s) <id> [<id>...] out.

       Usage:

          ceph osd out <ids> [<ids>...]

       Subcommand ok-to-stop checks whether the list of OSD(s) can be stopped without immediately
       making data unavailable.  That is, all data should remain readable and writeable, although
       data  redundancy  may  be reduced as some PGs may end up in a degraded (but active) state.
       It will return a success code if it is okay to stop the  OSD(s),  or  an  error  code  and
       informative message if it is not or if no conclusion can be drawn at the current time.

       Usage:

          ceph osd ok-to-stop <id> [<ids>...]

       Subcommand pause pauses osd.

       Usage:

          ceph osd pause

       Subcommand perf prints dump of OSD perf summary stats.

       Usage:

          ceph osd perf

       Subcommand pg-temp set pg_temp mapping pgid:[<id> [<id>...]] (developers only).

       Usage:

          ceph osd pg-temp <pgid> {<id> [<id>...]}

       Subcommand force-create-pg forces creation of pg <pgid>.

       Usage:

          ceph osd force-create-pg <pgid>

       Subcommand pool is used for managing data pools. It uses some additional subcommands.

       Subcommand create creates pool.

       Usage:

          ceph osd pool create <poolname> <int[0-]> {<int[0-]>} {replicated|erasure}
          {<erasure_code_profile>} {<rule>} {<int>}

       Subcommand delete deletes pool.

       Usage:

          ceph osd pool delete <poolname> {<poolname>} {--yes-i-really-really-mean-it}

       Subcommand get gets pool parameter <var>.

       Usage:

          ceph osd pool get <poolname> size|min_size|pg_num|pgp_num|crush_rule|write_fadvise_dontneed

       Only for tiered pools:

          ceph osd pool get <poolname> hit_set_type|hit_set_period|hit_set_count|hit_set_fpp|
          target_max_objects|target_max_bytes|cache_target_dirty_ratio|cache_target_dirty_high_ratio|
          cache_target_full_ratio|cache_min_flush_age|cache_min_evict_age|
          min_read_recency_for_promote|hit_set_grade_decay_rate|hit_set_search_last_n

       Only for erasure coded pools:

          ceph osd pool get <poolname> erasure_code_profile

       Use all to get all pool parameters that apply to the pool's type:

          ceph osd pool get <poolname> all

       Subcommand get-quota obtains object or byte limits for pool.

       Usage:

          ceph osd pool get-quota <poolname>

       Subcommand ls list pools

       Usage:

          ceph osd pool ls {detail}

       Subcommand mksnap makes snapshot <snap> in <pool>.

       Usage:

          ceph osd pool mksnap <poolname> <snap>

       Subcommand rename renames <srcpool> to <destpool>.

       Usage:

          ceph osd pool rename <poolname> <poolname>

       Subcommand rmsnap removes snapshot <snap> from <pool>.

       Usage:

          ceph osd pool rmsnap <poolname> <snap>

       Subcommand set sets pool parameter <var> to <val>.

       Usage:

          ceph osd pool set <poolname> size|min_size|pg_num|
          pgp_num|crush_rule|hashpspool|nodelete|nopgchange|nosizechange|
          hit_set_type|hit_set_period|hit_set_count|hit_set_fpp|debug_fake_ec_pool|
          target_max_bytes|target_max_objects|cache_target_dirty_ratio|
          cache_target_dirty_high_ratio|
          cache_target_full_ratio|cache_min_flush_age|cache_min_evict_age|
          min_read_recency_for_promote|write_fadvise_dontneed|hit_set_grade_decay_rate|
          hit_set_search_last_n
          <val> {--yes-i-really-mean-it}

       Subcommand set-quota sets object or byte limit on pool.

       Usage:

          ceph osd pool set-quota <poolname> max_objects|max_bytes <val>

       Subcommand stats obtain stats from all pools, or from specified pool.

       Usage:

          ceph osd pool stats {<name>}

       Subcommand application is used for adding an annotation to the given pool. By default, the
       possible applications are object, block, and file  storage  (corresponding  app-names  are
       "rgw",  "rbd", and "cephfs"). However, there might be other applications as well. Based on
       the application, there may or may not be some processing conducted.

       Subcommand disable disables the given application on the given pool.

       Usage:

          ceph osd pool application disable <pool-name> <app> {--yes-i-really-mean-it}

       Subcommand enable adds an annotation to the given pool for the mentioned application.

       Usage:

          ceph osd pool application enable <pool-name> <app> {--yes-i-really-mean-it}

       Subcommand get displays the value for the given key that is  assosciated  with  the  given
       application  of  the  given  pool.  Not  passing  the optional arguments would display all
       key-value pairs for all applications for all pools.

       Usage:

          ceph osd pool application get {<pool-name>} {<app>} {<key>}

       Subcommand rm removes the key-value pair for the given key in the given application of the
       given pool.

       Usage:

          ceph osd pool application rm <pool-name> <app> <key>

       Subcommand  set  assosciates  or  updates, if it already exists, a key-value pair with the
       given application for the given pool.

       Usage:

          ceph osd pool application set <pool-name> <app> <key> <value>

       Subcommand primary-affinity adjust osd primary-affinity from 0.0 <=<weight> <= 1.0

       Usage:

          ceph osd primary-affinity <osdname (id|osd.id)> <float[0.0-1.0]>

       Subcommand primary-temp sets primary_temp mapping pgid:<id>|-1 (developers only).

       Usage:

          ceph osd primary-temp <pgid> <id>

       Subcommand repair initiates repair on a specified osd.

       Usage:

          ceph osd repair <who>

       Subcommand reweight reweights osd to 0.0 < <weight> < 1.0.

       Usage:

          osd reweight <int[0-]> <float[0.0-1.0]>

       Subcommand      reweight-by-pg      reweight      OSDs      by       PG       distribution
       [overload-percentage-for-consideration, default 120].

       Usage:

          ceph osd reweight-by-pg {<int[100-]>} {<poolname> [<poolname...]}
          {--no-increasing}

       Subcommand       reweight-by-utilization       reweight      OSDs      by      utilization
       [overload-percentage-for-consideration, default 120].

       Usage:

          ceph osd reweight-by-utilization {<int[100-]>}
          {--no-increasing}

       Subcommand rm removes osd(s) <id> [<id>...] from the OSD map.

       Usage:

          ceph osd rm <ids> [<ids>...]

       Subcommand destroy marks OSD id as destroyed, removing its cephx entity's keys and all  of
       its dm-crypt and daemon-private config key entries.

       This  command  will not remove the OSD from crush, nor will it remove the OSD from the OSD
       map. Instead, once the command  successfully  completes,  the  OSD  will  show  marked  as
       destroyed.

       In order to mark an OSD as destroyed, the OSD must first be marked as lost.

       Usage:

          ceph osd destroy <id> {--yes-i-really-mean-it}

       Subcommand purge performs a combination of osd destroy, osd rm and osd crush remove.

       Usage:

          ceph osd purge <id> {--yes-i-really-mean-it}

       Subcommand  safe-to-destroy  checks whether it is safe to remove or destroy an OSD without
       reducing overall data redundancy or durability.  It will return a success code  if  it  is
       definitely safe, or an error code and informative message if it is not or if no conclusion
       can be drawn at the current time.

       Usage:

          ceph osd safe-to-destroy <id> [<ids>...]

       Subcommand scrub initiates scrub on specified osd.

       Usage:

          ceph osd scrub <who>

       Subcommand set sets <key>.

       Usage:

          ceph osd set full|pause|noup|nodown|noout|noin|nobackfill|
          norebalance|norecover|noscrub|nodeep-scrub|notieragent

       Subcommand setcrushmap sets crush map from input file.

       Usage:

          ceph osd setcrushmap

       Subcommand setmaxosd sets new maximum osd value.

       Usage:

          ceph osd setmaxosd <int[0-]>

       Subcommand set-require-min-compat-client enforces the cluster to  be  backward  compatible
       with  the  specified  client version. This subcommand prevents you from making any changes
       (e.g., crush tunables, or using new features) that  would  violate  the  current  setting.
       Please note, This subcommand will fail if any connected daemon or client is not compatible
       with the features offered by the given <version>. To see the features and releases of  all
       clients connected to cluster, please see ceph features.

       Usage:

          ceph osd set-require-min-compat-client <version>

       Subcommand stat prints summary of OSD map.

       Usage:

          ceph osd stat

       Subcommand tier is used for managing tiers. It uses some additional subcommands.

       Subcommand  add  adds  the tier <tierpool> (the second one) to base pool <pool> (the first
       one).

       Usage:

          ceph osd tier add <poolname> <poolname> {--force-nonempty}

       Subcommand add-cache adds a cache <tierpool> (the second one) of size <size>  to  existing
       pool <pool> (the first one).

       Usage:

          ceph osd tier add-cache <poolname> <poolname> <int[0-]>

       Subcommand cache-mode specifies the caching mode for cache tier <pool>.

       Usage:

          ceph osd tier cache-mode <poolname> none|writeback|forward|readonly|
          readforward|readproxy

       Subcommand  remove removes the tier <tierpool> (the second one) from base pool <pool> (the
       first one).

       Usage:

          ceph osd tier remove <poolname> <poolname>

       Subcommand remove-overlay removes the overlay pool for base pool <pool>.

       Usage:

          ceph osd tier remove-overlay <poolname>

       Subcommand set-overlay set the overlay pool for base pool <pool> to be <overlaypool>.

       Usage:

          ceph osd tier set-overlay <poolname> <poolname>

       Subcommand tree prints OSD tree.

       Usage:

          ceph osd tree {<int[0-]>}

       Subcommand unpause unpauses osd.

       Usage:

          ceph osd unpause

       Subcommand unset unsets <key>.

       Usage:

          ceph osd unset full|pause|noup|nodown|noout|noin|nobackfill|
          norebalance|norecover|noscrub|nodeep-scrub|notieragent

   pg
       It is used for managing the placement groups in OSDs. It uses some additional subcommands.

       Subcommand debug shows debug info about pgs.

       Usage:

          ceph pg debug unfound_objects_exist|degraded_pgs_exist

       Subcommand deep-scrub starts deep-scrub on <pgid>.

       Usage:

          ceph pg deep-scrub <pgid>

       Subcommand dump shows human-readable versions of pg map (only 'all' valid with plain).

       Usage:

          ceph pg dump {all|summary|sum|delta|pools|osds|pgs|pgs_brief} [{all|summary|sum|delta|pools|osds|pgs|pgs_brief...]}

       Subcommand dump_json shows human-readable version of pg map in json only.

       Usage:

          ceph pg dump_json {all|summary|sum|delta|pools|osds|pgs|pgs_brief} [{all|summary|sum|delta|pools|osds|pgs|pgs_brief...]}

       Subcommand dump_pools_json shows pg pools info in json only.

       Usage:

          ceph pg dump_pools_json

       Subcommand dump_stuck shows information about stuck pgs.

       Usage:

          ceph pg dump_stuck {inactive|unclean|stale|undersized|degraded [inactive|unclean|stale|undersized|degraded...]}
          {<int>}

       Subcommand getmap gets binary pg map to -o/stdout.

       Usage:

          ceph pg getmap

       Subcommand ls lists pg with specific pool, osd, state

       Usage:

          ceph pg ls {<int>} {<pg-state> [<pg-state>...]}

       Subcommand ls-by-osd lists pg on osd [osd]

       Usage:

          ceph pg ls-by-osd <osdname (id|osd.id)> {<int>}
          {<pg-state> [<pg-state>...]}

       Subcommand ls-by-pool lists pg with pool = [poolname]

       Usage:

          ceph pg ls-by-pool <poolstr> {<int>} {<pg-state> [<pg-state>...]}

       Subcommand ls-by-primary lists pg with primary = [osd]

       Usage:

          ceph pg ls-by-primary <osdname (id|osd.id)> {<int>}
          {<pg-state> [<pg-state>...]}

       Subcommand map shows mapping of pg to osds.

       Usage:

          ceph pg map <pgid>

       Subcommand repair starts repair on <pgid>.

       Usage:

          ceph pg repair <pgid>

       Subcommand scrub starts scrub on <pgid>.

       Usage:

          ceph pg scrub <pgid>

       Subcommand stat shows placement group status.

       Usage:

          ceph pg stat

   quorum
       Cause MON to enter or exit quorum.

       Usage:

          ceph quorum enter|exit

       Note: this only works on the MON to which the ceph command is connected.  If  you  want  a
       specific MON to enter or exit quorum, use this syntax:

          ceph tell mon.<id> quorum enter|exit

   quorum_status
       Reports status of monitor quorum.

       Usage:

          ceph quorum_status

   report
       Reports full status of cluster, optional title tag strings.

       Usage:

          ceph report {<tags> [<tags>...]}

   scrub
       Scrubs the monitor stores.

       Usage:

          ceph scrub

   status
       Shows cluster status.

       Usage:

          ceph status

   sync force
       Forces sync of and clear monitor store.

       Usage:

          ceph sync force {--yes-i-really-mean-it} {--i-know-what-i-am-doing}

   tell
       Sends a command to a specific daemon.

       Usage:

          ceph tell <name (type.id)> <command> [options...]

       List all available commands.

       Usage:

          ceph tell <name (type.id)> help

   version
       Show mon daemon version

       Usage:

          ceph version

OPTIONS

       -i infile
              will  specify an input file to be passed along as a payload with the command to the
              monitor cluster. This is only used for specific monitor commands.

       -o outfile
              will write any payload returned by the monitor cluster with its reply  to  outfile.
              Only specific monitor commands (e.g. osd getmap) return a payload.

       --setuser user
              will apply the appropriate user ownership to the file specified by the option '-o'.

       --setgroup group
              will  apply  the  appropriate  group  ownership to the file specified by the option
              '-o'.

       -c ceph.conf, --conf=ceph.conf
              Use ceph.conf configuration file instead  of  the  default  /etc/ceph/ceph.conf  to
              determine monitor addresses during startup.

       --id CLIENT_ID, --user CLIENT_ID
              Client id for authentication.

       --name CLIENT_NAME, -n CLIENT_NAME
              Client name for authentication.

       --cluster CLUSTER
              Name of the Ceph cluster.

       --admin-daemon ADMIN_SOCKET, daemon DAEMON_NAME
              Submit admin-socket commands via admin sockets in /var/run/ceph.

       --admin-socket ADMIN_SOCKET_NOPE
              You probably mean --admin-daemon

       -s, --status
              Show cluster status.

       -w, --watch
              Watch live cluster changes.

       --watch-debug
              Watch debug events.

       --watch-info
              Watch info events.

       --watch-sec
              Watch security events.

       --watch-warn
              Watch warning events.

       --watch-error
              Watch error events.

       --version, -v
              Display version.

       --verbose
              Make verbose.

       --concise
              Make less verbose.

       -f {json,json-pretty,xml,xml-pretty,plain}, --format
              Format of output.

       --connect-timeout CLUSTER_TIMEOUT
              Set a timeout for connecting to the cluster.

       --no-increasing
              --no-increasing  is  off  by default. So increasing the osd weight is allowed using
              the reweight-by-utilization  or  test-reweight-by-utilization  commands.   If  this
              option  is  used  with these commands, it will help not to increase osd weight even
              the osd is under utilized.

       --block
              block until completion (scrub and deep-scrub only)

AVAILABILITY

       ceph is part of Ceph, a  massively  scalable,  open-source,  distributed  storage  system.
       Please refer to the Ceph documentation at http://ceph.com/docs for more information.

SEE ALSO

       ceph-mon(8), ceph-osd(8), ceph-mds(8)

COPYRIGHT

       2010-2019,  Inktank  Storage,  Inc.  and  contributors.  Licensed  under  Creative Commons
       Attribution Share Alike 3.0 (CC-BY-SA-3.0)