Provided by: ceph-common_0.80.11-0ubuntu1.14.04.4_amd64 
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 [ del | exists | get | list | put ] ...
ceph df {detail}
ceph fsid
ceph health {detail}
ceph heap [ dump | start_profiler | stop_profiler | release | stats ] ...
ceph injectargs <injectedargs> [ <injectedargs>... ]
ceph log <logtext> [ <logtext>... ]
ceph mds [ add_data_pool | cluster_down | cluster_up | compat | deactivate | dump | fail | getmap | newfs | remove_data_pool | rm | rmfailed | set | set_max_mds | set_state | setmap | stat | stop | tell ] ...
ceph mon [ add | dump | getmap | remove | stat ] ...
ceph mon_status
ceph osd [ blacklist | create | deep-scrub | down | dump | erasure-code-profile | find | getcrushmap | getmap | getmaxosd | in | lost | ls | lspools | map | metadata | out | pause | perf | primary-affinity | primary-temp | repair | reweight | reweight-by-utilization | rm | scrub | set | setcrushmap | setmaxosd | stat | thrash | tree | unpause | unset ] ...
ceph osd crush [ add | add-bucket | create-or-move | dump | get-tunable | link | move | remove | reweight | reweight-all | rm | rule | set | set-tunable | show-tunables | tunables | unlink ] ...
ceph osd pool [ create | delete | get | get-quota | mksnap | rename | rmsnap | set | set-quota | stats ] ...
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 | force_create_pg | getmap | map | repair | scrub | send_pg_creates | set_full_ratio | set_nearfull_ratio | 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)> <args> [<args>...]
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 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 list lists authentication state.
Usage:
ceph auth list
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 del deletes configuration key.
Usage:
ceph config-key del <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 list lists configuration keys.
Usage:
ceph config-key list
Subcommand put puts configuration key and values.
Usage:
ceph config-key put <key> {<val>}
df
Show cluster's free space status.
Usage:
ceph df {detail}
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|release|stats
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 add_data_pool adds data pool.
Usage:
ceph mds add_data_pool <pool>
Subcommand cluster_down takes mds cluster down.
Usage:
ceph mds cluster_down
Subcommand cluster_up brings mds cluster up.
Usage:
ceph mds cluster_up
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 deactivate stops mds.
Usage:
ceph mds deactivate <who>
Subcommand dump dumps information, optionally from epoch.
Usage:
ceph mds dump {<int[0-]>}
Subcommand fail forces mds to status fail.
Usage:
ceph mds fail <who>
Subcommand getmap gets MDS map, optionally from epoch.
Usage:
ceph mds getmap {<int[0-]>}
Subcommand newfs makes new filesystem using pools <metadata> and <data>.
Usage:
ceph mds newfs <int[0-]> <int[0-]> {--yes-i-really-mean-it}
Subcommand remove_data_pool removes data pool.
Usage:
ceph mds remove_data_pool <pool>
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 set mds parameter <var> to <val>
Usage:
ceph mds set max_mds|max_file_size|allow_new_snaps|inline_data <va> {<confirm>}
Subcommand set_max_mds sets max MDS index.
Usage:
ceph mds set_max_mds <int[0-]>
Subcommand set_state sets mds state of <gid> to <numeric-state>.
Usage:
ceph mds set_state <int[0-]> <int[0-20]>
Subcommand setmap sets mds map; must supply correct epoch number.
Usage:
ceph mds setmap <int[0-]>
Subcommand stat shows MDS status.
Usage:
ceph mds stat
Subcommand stop stops mds.
Usage:
ceph mds stop <who>
Subcommand tell sends command to particular mds.
Usage:
ceph mds tell <who> <args> [<args>...]
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
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 create creates new osd (with optional UUID).
Usage:
ceph osd create {<uuid>}
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 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 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 list lists crush rules.
Usage:
ceph osd crush rule list
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 tunables sets crush tunables values to <profile>.
Usage:
ceph osd crush tunables legacy|argonaut|bobtail|firefly|optimal|default
Subcommand unlink unlinks <name> from crush map (everywhere, or just at <ancestor>).
Usage:
ceph osd crush unlink <name> {<ancestor>}
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-]>
Subcommand out sets osd(s) <id> [<id>...] out.
Usage:
ceph osd out <ids> [<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 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>} {<ruleset>}
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|crash_replay_interval|pg_num|
pgp_num|crush_ruleset|hit_set_type|hit_set_period|hit_set_count|hit_set_fpp
ceph osd pool get <poolname> auid|target_max_objects|target_max_bytes
ceph osd pool get <poolname> cache_target_dirty_ratio|cache_target_full_ratio
ceph osd pool get <poolname> cache_min_flush_age|cache_min_evict_age|
erasure_code_profile
Subcommand get-quota obtains object or byte limits for pool.
Usage:
ceph osd pool get-quota <poolname>
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|crash_replay_interval|
pg_num|pgp_num|crush_ruleset|hashpspool|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_full_ratio|
cache_min_flush_age|cache_min_evict_age|auid
<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 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-utilization reweight OSDs by utilization
[overload-percentage-for-consideration, default 120].
Usage:
ceph osd reweight-by-utilization {<int[100-]>}
Subcommand rm removes osd(s) <id> [<id>...] in the cluster.
Usage:
ceph osd rm <ids> [<ids>...]
Subcommand scrub initiates scrub on specified osd.
Usage:
ceph osd scrub <who>
Subcommand set sets <key>.
Usage:
ceph osd set pause|noup|nodown|noout|noin|nobackfill|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 stat prints summary of OSD map.
Usage:
ceph osd stat
Subcommand thrash thrashes OSDs for <num_epochs>.
Usage:
ceph osd thrash <int[0-]>
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
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:
osd unset pause|noup|nodown|noout|noin|nobackfill|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 [inactive|unclean|stale...]} {<int>}
Subcommand force_create_pg forces creation of pg <pgid>.
Usage:
ceph pg force_create_pg <pgid>
Subcommand getmap gets binary pg map to -o/stdout.
Usage:
ceph pg getmap
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 send_pg_creates triggers pg creates to be issued.
Usage:
ceph pg send_pg_creates
Subcommand set_full_ratio sets ratio at which pgs are considered full.
Usage:
ceph pg set_full_ratio <float[0.0-1.0]>
Subcommand set_nearfull_ratio sets ratio at which pgs are considered nearly full.
Usage:
ceph pg set_nearfull_ratio <float[0.0-1.0]>
Subcommand stat shows placement group status.
Usage:
ceph pg stat
quorum
Enter or exit quorum.
Usage:
ceph 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)> <args> [<args>...]
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.
-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
Submit admin-socket commands.
--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.
AVAILABILITY
ceph is a part of the Ceph 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
2010-2014, Inktank Storage, Inc. and contributors. Licensed under Creative Commons BY-SA