mirror of
https://github.com/ceph/ceph
synced 2024-12-11 22:18:18 +00:00
365 lines
9.2 KiB
ReStructuredText
365 lines
9.2 KiB
ReStructuredText
.. index:: control, commands
|
|
|
|
=================
|
|
Control commands
|
|
=================
|
|
|
|
Monitor commands
|
|
----------------
|
|
|
|
Monitor commands are issued using the ceph utility::
|
|
|
|
$ ceph [-m monhost] command
|
|
|
|
where the command is usually (though not always) of the form::
|
|
|
|
$ ceph subsystem command
|
|
|
|
System commands
|
|
---------------
|
|
|
|
::
|
|
|
|
$ ceph stop
|
|
|
|
Cleanly shuts down the cluster. ::
|
|
|
|
$ ceph -s
|
|
|
|
Shows an overview of the current status of the cluster. ::
|
|
|
|
$ ceph -w
|
|
|
|
Shows a running summary of the status of the cluster, and major events.
|
|
|
|
$ ceph quorum_status
|
|
|
|
Show the monitor quorum, including which monitors are participating and which one
|
|
is the leader.
|
|
|
|
$ ceph [-m monhost] mon_status
|
|
|
|
Query the status of a single monitor, including whether or not it is in the quorum.
|
|
|
|
|
|
AUTH subsystem
|
|
--------------
|
|
::
|
|
|
|
$ ceph auth add <osd> <--in-file|-i> <path-to-osd-keyring>
|
|
|
|
Add auth keyring for an osd. ::
|
|
|
|
$ ceph auth list
|
|
|
|
Show auth key OSD subsystem.
|
|
|
|
PG subsystem
|
|
------------
|
|
::
|
|
|
|
$ ceph -- pg dump [--format <format>]
|
|
|
|
Output the stats of all pgs. Valid formats are "plain" and "json",
|
|
and plain is the default. ::
|
|
|
|
$ ceph -- pg dump_stuck inactive|unclean|stale [--format <format>] [-t|--threshold <seconds>]
|
|
|
|
Output the stats of all PGs stuck in the specified state.
|
|
|
|
``--format`` may be ``plain`` (default) or ``json``
|
|
|
|
``--threshold`` defines how many seconds "stuck" is (default: 300)
|
|
|
|
**Inactive** PGs cannot process reads or writes because they are waiting for an OSD
|
|
with the most up-to-date data to come back.
|
|
|
|
**Unclean** PGs contain objects that are not replicated the desired number
|
|
of times. They should be recovering.
|
|
|
|
**Stale** PGs are in an unknown state - the OSDs that host them have not
|
|
reported to the monitor cluster in a while (configured by
|
|
mon_osd_report_timeout). ::
|
|
|
|
$ ceph pg <pgid> mark_unfound_lost revert
|
|
|
|
Revert "lost" objects to their prior state, either a previous version
|
|
or delete them if they were just created.
|
|
|
|
|
|
OSD subsystem
|
|
-------------
|
|
::
|
|
|
|
$ ceph osd stat
|
|
|
|
Query osd subsystem status. ::
|
|
|
|
$ ceph osd getmap -o file
|
|
|
|
Write a copy of the most recent osd map to a file. See
|
|
:doc:`osdmaptool </man/8/osdmaptool>`. ::
|
|
|
|
$ ceph osd getcrushmap -o file
|
|
|
|
Write a copy of the crush map from the most recent osd map to
|
|
file. This is functionally equivalent to ::
|
|
|
|
$ ceph osd getmap -o /tmp/osdmap
|
|
$ osdmaptool /tmp/osdmap --export-crush file
|
|
|
|
::
|
|
|
|
$ ceph osd dump [--format <format>]
|
|
|
|
Dump the osd map. Valid formats for -f are "plain" and "json". If no
|
|
--format option is given, the osd map is dumped as plain text. ::
|
|
|
|
$ ceph osd tree [--format <format>]
|
|
|
|
Dump the osd map as a tree with one line per osd containing weight
|
|
and state. ::
|
|
|
|
$ ceph osd crush add <id> <name> <weight> [<loc1> [<loc2> ...]]
|
|
|
|
Add a new item with the given id/name/weight at the specified
|
|
location. ::
|
|
|
|
$ ceph osd crush remove <id>
|
|
|
|
Remove an existing item from the crush map. ::
|
|
|
|
$ ceph osd crush reweight <name> <weight>
|
|
|
|
Set the weight of the item given by ``<name>`` to ``<weight>``. ::
|
|
|
|
$ ceph osd cluster_snap <name>
|
|
|
|
Create a cluster snapshot. ::
|
|
|
|
$ ceph osd lost [--yes-i-really-mean-it]
|
|
|
|
Mark an OSD as lost. This may result in permanent data loss. Use with caution. ::
|
|
|
|
$ ceph osd create [<id>]
|
|
|
|
Create a new OSD. If no ID is given, a new ID is automatically selected
|
|
if possible. ::
|
|
|
|
$ ceph osd rm [<id>...]
|
|
|
|
Remove the given OSD(s). ::
|
|
|
|
$ ceph osd getmaxosd
|
|
|
|
Query the current max_osd parameter in the osd map. ::
|
|
|
|
$ ceph osd setmap -i file
|
|
|
|
Import the given osd map. Note that this can be a bit dangerous,
|
|
since the osd map includes dynamic state about which OSDs are current
|
|
on or offline; only do this if you've just modified a (very) recent
|
|
copy of the map. ::
|
|
|
|
$ ceph osd setcrushmap -i file
|
|
|
|
Import the given crush map. ::
|
|
|
|
$ ceph osd setmaxosd
|
|
|
|
Set the max_osd parameter in the osd map. This is necessary when
|
|
expanding the storage cluster. ::
|
|
|
|
$ ceph osd down N
|
|
|
|
Mark osdN down. ::
|
|
|
|
$ ceph osd out N
|
|
|
|
Mark osdN out of the distribution (i.e. allocated no data). ::
|
|
|
|
$ ceph osd in N
|
|
|
|
Mark osdN in the distribution (i.e. allocated data). ::
|
|
|
|
$ ceph class list
|
|
|
|
List classes that are loaded in the ceph cluster. ::
|
|
|
|
$ ceph osd pause
|
|
$ ceph osd unpause
|
|
|
|
Set or clear the pause flags in the OSD map. If set, no IO requests
|
|
will be sent to any OSD. Clearing the flags via unpause results in
|
|
resending pending requests. ::
|
|
|
|
$ ceph osd reweight N W
|
|
|
|
Set the weight of osdN to W. Two OSDs with the same weight will receive
|
|
roughly the same number of I/O requests and store approximately the
|
|
same amount of data. ::
|
|
|
|
$ ceph osd reweight-by-utilization [threshold]
|
|
|
|
Reweights all the OSDs by reducing the weight of OSDs which are
|
|
heavily overused. By default it will adjust the weights downward on
|
|
OSDs which have 120% of the average utilization, but if you include
|
|
threshold it will use that percentage instead. ::
|
|
|
|
$ ceph osd blacklist add ADDRESS[:source_port] [TIME]
|
|
$ ceph osd blacklist rm ADDRESS[:source_port]
|
|
|
|
Adds/removes the address to/from the blacklist. When adding an address,
|
|
you can specify how long it should be blacklisted in seconds; otherwise
|
|
it will default to 1 hour. A blacklisted address is prevented from
|
|
connecting to any osd. Blacklisting is most often used to prevent a
|
|
laggy mds making bad changes to data on the osds.
|
|
|
|
These commands are mostly only useful for failure testing, as
|
|
blacklists are normally maintained automatically and shouldn't need
|
|
manual intervention. ::
|
|
|
|
$ ceph osd pool mksnap POOL SNAPNAME
|
|
$ ceph osd pool rmsnap POOL SNAPNAME
|
|
|
|
Creates/deletes a snapshot of a pool. ::
|
|
|
|
$ ceph osd pool create POOL [pg_num [pgp_num]]
|
|
$ ceph osd pool delete POOL
|
|
|
|
Creates/deletes a storage pool. ::
|
|
|
|
$ ceph osd pool set POOL FIELD VALUE
|
|
|
|
Changes a pool setting. Valid fields are:
|
|
|
|
* ``size``: Sets the number of copies of data in the pool.
|
|
* ``crash_replay_interval``: The number of seconds to allow
|
|
clients to replay acknowledged but uncommited requests.
|
|
* ``pg_num``: The placement group number.
|
|
* ``pgp_num``: Effective number when calculating pg placement.
|
|
* ``crush_ruleset``: rule number for mapping placement.
|
|
|
|
::
|
|
|
|
$ ceph osd pool get POOL FIELD
|
|
|
|
Get the value of a pool setting. Valid fields are:
|
|
|
|
* ``pg_num``: See above.
|
|
* ``pgp_num``: See above.
|
|
* ``lpg_num``: The number of local PGs.
|
|
* ``lpgp_num``: The number used for placing the local PGs.
|
|
|
|
::
|
|
|
|
$ ceph osd scrub N
|
|
|
|
Sends a scrub command to osdN. To send the command to all osds, use ``*``.
|
|
TODO: what does this actually do ::
|
|
|
|
$ ceph osd repair N
|
|
|
|
Sends a repair command to osdN. To send the command to all osds, use ``*``.
|
|
TODO: what does this actually do
|
|
|
|
MDS subsystem
|
|
-------------
|
|
|
|
Change configuration parameters on a running mds. ::
|
|
|
|
$ ceph mds tell <mds-id> injectargs '--<switch> <value> [--<switch> <value>]'
|
|
|
|
Example::
|
|
|
|
$ ceph mds tell 0 injectargs '--debug_ms 1 --debug_mds 10'
|
|
|
|
Enables debug messages. ::
|
|
|
|
$ ceph mds stat
|
|
|
|
Displays the status of all metadata servers.
|
|
|
|
.. todo:: ``ceph mds`` subcommands missing docs: set_max_mds, dump, getmap, stop, setmap
|
|
|
|
|
|
Mon subsystem
|
|
-------------
|
|
|
|
Show monitor stats::
|
|
|
|
$ ceph mon stat
|
|
2011-12-14 10:40:59.044395 mon <- [mon,stat]
|
|
2011-12-14 10:40:59.057111 mon.1 -> 'e3: 5 mons at {a=10.1.2.3:6789/0,b=10.1.2.4:6789/0,c=10.1.2.5:6789/0,d=10.1.2.6:6789/0,e=10.1.2.7:6789/0}, election epoch 16, quorum 0,1,2,3' (0)
|
|
|
|
The ``quorum`` list at the end lists monitor nodes that are part of the current quorum.
|
|
|
|
This is also available more directly::
|
|
|
|
$ ./ceph quorum_status
|
|
2011-12-14 10:44:20.417705 mon <- [quorum_status]
|
|
2011-12-14 10:44:20.431890 mon.0 -> '{ "election_epoch": 10,
|
|
"quorum": [
|
|
0,
|
|
1,
|
|
2],
|
|
"monmap": { "epoch": 1,
|
|
"fsid": "444b489c-4f16-4b75-83f0-cb8097468898",
|
|
"modified": "2011-12-12 13:28:27.505520",
|
|
"created": "2011-12-12 13:28:27.505520",
|
|
"mons": [
|
|
{ "rank": 0,
|
|
"name": "a",
|
|
"addr": "127.0.0.1:6789\/0"},
|
|
{ "rank": 1,
|
|
"name": "b",
|
|
"addr": "127.0.0.1:6790\/0"},
|
|
{ "rank": 2,
|
|
"name": "c",
|
|
"addr": "127.0.0.1:6791\/0"}]}}' (0)
|
|
|
|
The above will block until a quorum is reached.
|
|
|
|
For a status of just the monitor you connect to (use ``-m HOST:PORT``
|
|
to select)::
|
|
|
|
$ ./ceph mon_status
|
|
2011-12-14 10:45:30.644414 mon <- [mon_status]
|
|
2011-12-14 10:45:30.644632 mon.0 -> '{ "name": "a",
|
|
"rank": 0,
|
|
"state": "leader",
|
|
"election_epoch": 10,
|
|
"quorum": [
|
|
0,
|
|
1,
|
|
2],
|
|
"outside_quorum": [],
|
|
"monmap": { "epoch": 1,
|
|
"fsid": "444b489c-4f16-4b75-83f0-cb8097468898",
|
|
"modified": "2011-12-12 13:28:27.505520",
|
|
"created": "2011-12-12 13:28:27.505520",
|
|
"mons": [
|
|
{ "rank": 0,
|
|
"name": "a",
|
|
"addr": "127.0.0.1:6789\/0"},
|
|
{ "rank": 1,
|
|
"name": "b",
|
|
"addr": "127.0.0.1:6790\/0"},
|
|
{ "rank": 2,
|
|
"name": "c",
|
|
"addr": "127.0.0.1:6791\/0"}]}}' (0)
|
|
|
|
A dump of the monitor state::
|
|
|
|
$ ceph mon dump
|
|
2011-12-14 10:43:08.015333 mon <- [mon,dump]
|
|
2011-12-14 10:43:08.015567 mon.0 -> 'dumped monmap epoch 1' (0)
|
|
epoch 1
|
|
fsid 444b489c-4f16-4b75-83f0-cb8097468898
|
|
last_changed 2011-12-12 13:28:27.505520
|
|
created 2011-12-12 13:28:27.505520
|
|
0: 127.0.0.1:6789/0 mon.a
|
|
1: 127.0.0.1:6790/0 mon.b
|
|
2: 127.0.0.1:6791/0 mon.c
|
|
|