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Merge pull request #40974 from tchaikov/wip-doc-more-conf-vals

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doc/rados/configuration/mon-config-ref: use confval directive

Reviewed-by: Josh Durgin <jdurgin@redhat.com>
This commit is contained in:
Kefu Chai 2021-04-22 14:14:42 +08:00 committed by GitHub
commit fc1d1c7326
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6 changed files with 133 additions and 293 deletions
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10
doc/_ext/ceph_confval.py
View File

@ -210,7 +210,15 @@ class CephOption(Directive):
desc = opt.get('fmt_desc') or opt.get('long_desc') or opt.get('desc')
opt_default = opt.get('default')
default = self.options.get('default', opt_default)
rendered = self.template.render(opt=opt, desc=desc, default=default)
try:
rendered = self.template.render(opt=opt,
desc=desc,
default=default)
except Exception as e:
message = (f'Unable to render option "{name}": {e}. ',
f'opt={opt}, desc={desc}, default={default}')
raise self.error(message)
lineno = self.lineno - self.state_machine.input_offset - 1
source = self.state_machine.input_lines.source(lineno)
self.state_machine.insert_input(rendered.split('\n'), source)

9
doc/rados/configuration/bluestore-config-ref.rst
View File

@ -324,6 +324,15 @@ To enable sharding and apply the Pacific defaults, stop an OSD and run
.. confval:: bluestore_rocksdb_cf
.. confval:: bluestore_rocksdb_cfs
Throttling
==========
.. confval:: bluestore_throttle_bytes
.. confval:: bluestore_throttle_deferred_bytes
.. confval:: bluestore_throttle_cost_per_io
.. confval:: bluestore_throttle_cost_per_io_hdd
.. confval:: bluestore_throttle_cost_per_io_ssd
SPDK Usage
==================

10
doc/rados/configuration/mclock-config-ref.rst
View File

@ -167,7 +167,7 @@ maximize the impact of the mclock scheduler.
:Bluestore Throttle Parameters:
We recommend using the default values as defined by
``bluestore_throttle_bytes`` and ``bluestore_throttle_deferred_bytes``. But
:confval:`bluestore_throttle_bytes` and :confval:`bluestore_throttle_deferred_bytes`. But
these parameters may also be determined during the benchmarking phase as
described below.
@ -183,7 +183,7 @@ correct bluestore throttle values.
2. Install cbt and all the dependencies mentioned on the cbt github page.
3. Construct the Ceph configuration file and the cbt yaml file.
4. Ensure that the bluestore throttle options ( i.e.
``bluestore_throttle_bytes`` and ``bluestore_throttle_deferred_bytes``) are
:confval:`bluestore_throttle_bytes` and :confval:`bluestore_throttle_deferred_bytes`) are
set to the default values.
5. Ensure that the test is performed on similar device types to get reliable
OSD capacity data.
@ -195,8 +195,8 @@ correct bluestore throttle values.
value is the baseline throughput(IOPS) when the default bluestore
throttle options are in effect.
9. If the intent is to determine the bluestore throttle values for your
environment, then set the two options, ``bluestore_throttle_bytes`` and
``bluestore_throttle_deferred_bytes`` to 32 KiB(32768 Bytes) each to begin
environment, then set the two options, :confval:`bluestore_throttle_bytes` and
:confval:`bluestore_throttle_deferred_bytes` to 32 KiB(32768 Bytes) each to begin
with. Otherwise, you may skip to the next section.
10. Run the 4KiB random write workload as before on the OSD(s) for 300 secs.
11. Note the overall throughput from the cbt log files and compare the value
@ -253,7 +253,7 @@ The other values for the built-in profiles include *balanced* and
*high_recovery_ops*.
If there is a requirement to change the default profile, then the option
``osd_mclock_profile`` may be set in the **[global]** or **[osd]** section of
:confval:`osd_mclock_profile` may be set in the **[global]** or **[osd]** section of
your Ceph configuration file before bringing up your cluster.
Alternatively, to change the profile during runtime, use the following command:

316
doc/rados/configuration/mon-config-ref.rst
View File

@ -222,7 +222,7 @@ See the `Network Configuration Reference`_ for details.
Once you deploy a Ceph cluster, you **SHOULD NOT** change the IP addresses of
monitors. However, if you decide to change the monitor's IP address, you
must follow a specific procedure. See `Changing a Monitor's IP Address`_ for
must follow a specific procedure. See :ref:`Changing a Monitor's IP address` for
details.
Monitors can also be found by clients by using DNS SRV records. See `Monitor lookup through DNS`_ for details.
@ -577,36 +577,10 @@ acceptable values.
Client
------
``mon_client_hunt_interval``
:Description: The client will try a new monitor every ``N`` seconds until it
establishes a connection.
:Type: Double
:Default: ``3.00``
``mon_client_ping_interval``
:Description: The client will ping the monitor every ``N`` seconds.
:Type: Double
:Default: ``10.00``
``mon_client_max_log_entries_per_message``
:Description: The maximum number of log entries a monitor will generate
per client message.
:Type: Integer
:Default: ``1000``
``mon_client_bytes``
:Description: The amount of client message data allowed in memory (in bytes).
:Type: 64-bit Integer Unsigned
:Default: ``100ul << 20``
.. confval:: mon_client_hunt_interval
.. confval:: mon_client_ping_interval
.. confval:: mon_client_max_log_entries_per_message
.. confval:: mon_client_bytes
.. _pool-settings:
@ -617,258 +591,42 @@ Since version v0.94 there is support for pool flags which allow or disallow chan
Monitors can also disallow removal of pools if appropriately configured. The inconvenience of this guardrail
is far outweighed by the number of accidental pool (and thus data) deletions it prevents.
``mon_allow_pool_delete``
.. confval:: mon_allow_pool_delete
.. confval:: osd_pool_default_ec_fast_read
.. confval:: osd_pool_default_flag_hashpspool
.. confval:: osd_pool_default_flag_nodelete
.. confval:: osd_pool_default_flag_nopgchange
.. confval:: osd_pool_default_flag_nosizechange
:Description: Should monitors allow pools to be removed, regardless of what the pool flags say?
:Type: Boolean
:Default: ``false``
``osd_pool_default_ec_fast_read``
:Description: Whether to turn on fast read on the pool or not. It will be used as
the default setting of newly created erasure coded pools if ``fast_read``
is not specified at create time.
:Type: Boolean
:Default: ``false``
``osd_pool_default_flag_hashpspool``
:Description: Set the hashpspool flag on new pools
:Type: Boolean
:Default: ``true``
``osd_pool_default_flag_nodelete``
:Description: Set the ``nodelete`` flag on new pools, which prevents pool removal.
:Type: Boolean
:Default: ``false``
``osd_pool_default_flag_nopgchange``
:Description: Set the ``nopgchange`` flag on new pools. Does not allow the number of PGs to be changed.
:Type: Boolean
:Default: ``false``
``osd_pool_default_flag_nosizechange``
:Description: Set the ``nosizechange`` flag on new pools. Does not allow the ``size`` to be changed.
:Type: Boolean
:Default: ``false``
For more information about the pool flags see `Pool values`_.
For more information about the pool flags see :ref:`Pool values <setpoolvalues>`.
Miscellaneous
=============
``mon_max_osd``
:Description: The maximum number of OSDs allowed in the cluster.
:Type: 32-bit Integer
:Default: ``10000``
``mon_globalid_prealloc``
:Description: The number of global IDs to pre-allocate for clients and daemons in the cluster.
:Type: 32-bit Integer
:Default: ``10000``
``mon_subscribe_interval``
:Description: The refresh interval (in seconds) for subscriptions. The
subscription mechanism enables obtaining cluster maps
and log information.
:Type: Double
:Default: ``86400.00``
``mon_stat_smooth_intervals``
:Description: Ceph will smooth statistics over the last ``N`` PG maps.
:Type: Integer
:Default: ``6``
``mon_probe_timeout``
:Description: Number of seconds the monitor will wait to find peers before bootstrapping.
:Type: Double
:Default: ``2.00``
``mon_daemon_bytes``
:Description: The message memory cap for metadata server and OSD messages (in bytes).
:Type: 64-bit Integer Unsigned
:Default: ``400ul << 20``
``mon_max_log_entries_per_event``
:Description: The maximum number of log entries per event.
:Type: Integer
:Default: ``4096``
``mon_osd_prime_pg_temp``
:Description: Enables or disables priming the PGMap with the previous OSDs when an ``out``
OSD comes back into the cluster. With the ``true`` setting, clients
will continue to use the previous OSDs until the newly ``in`` OSDs for
a PG have peered.
:Type: Boolean
:Default: ``true``
``mon_osd_prime pg temp max time``
:Description: How much time in seconds the monitor should spend trying to prime the
PGMap when an out OSD comes back into the cluster.
:Type: Float
:Default: ``0.50``
``mon_osd_prime_pg_temp_max_time_estimate``
:Description: Maximum estimate of time spent on each PG before we prime all PGs
in parallel.
:Type: Float
:Default: ``0.25``
``mon_mds_skip_sanity``
:Description: Skip safety assertions on FSMap (in case of bugs where we want to
continue anyway). Monitor terminates if the FSMap sanity check
fails, but we can disable it by enabling this option.
:Type: Boolean
:Default: ``False``
``mon_max_mdsmap_epochs``
:Description: The maximum number of mdsmap epochs to trim during a single proposal.
:Type: Integer
:Default: ``500``
``mon_config_key_max_entry_size``
:Description: The maximum size of config-key entry (in bytes)
:Type: Integer
:Default: ``65536``
``mon_scrub_interval``
:Description: How often the monitor scrubs its store by comparing
the stored checksums with the computed ones for all stored
keys. (0 disables it. dangerous, use with care)
:Type: Seconds
:Default: ``1 day``
``mon_scrub_max_keys``
:Description: The maximum number of keys to scrub each time.
:Type: Integer
:Default: ``100``
``mon_compact_on_start``
:Description: Compact the database used as Ceph Monitor store on
``ceph-mon`` start. A manual compaction helps to shrink the
monitor database and improve the performance of it if the regular
compaction fails to work.
:Type: Boolean
:Default: ``False``
``mon_compact_on_bootstrap``
:Description: Compact the database used as Ceph Monitor store
on bootstrap. Monitors probe each other to establish
a quorum after bootstrap. If a monitor times out before joining the
quorum, it will start over and bootstrap again.
:Type: Boolean
:Default: ``False``
``mon_compact_on_trim``
:Description: Compact a certain prefix (including paxos) when we trim its old states.
:Type: Boolean
:Default: ``True``
``mon_cpu_threads``
:Description: Number of threads for performing CPU intensive work on monitor.
:Type: Integer
:Default: ``4``
``mon_osd_mapping_pgs_per_chunk``
:Description: We calculate the mapping from placement group to OSDs in chunks.
This option specifies the number of placement groups per chunk.
:Type: Integer
:Default: ``4096``
``mon_session_timeout``
:Description: Monitor will terminate inactive sessions stay idle over this
time limit.
:Type: Integer
:Default: ``300``
``mon_osd_cache_size_min``
:Description: The minimum amount of bytes to be kept mapped in memory for osd
monitor caches.
:Type: 64-bit Integer
:Default: ``134217728``
``mon_memory_target``
:Description: The amount of bytes pertaining to OSD monitor caches and KV cache
to be kept mapped in memory with cache auto-tuning enabled.
:Type: 64-bit Integer
:Default: ``2147483648``
``mon_memory_autotune``
:Description: Autotune the cache memory used for OSD monitors and KV
database.
:Type: Boolean
:Default: ``True``
.. confval:: mon_max_osd
.. confval:: mon_globalid_prealloc
.. confval:: mon_subscribe_interval
.. confval:: mon_stat_smooth_intervals
.. confval:: mon_probe_timeout
.. confval:: mon_daemon_bytes
.. confval:: mon_max_log_entries_per_event
.. confval:: mon_osd_prime_pg_temp
.. confval:: mon_osd_prime_pg_temp_max_time
.. confval:: mon_osd_prime_pg_temp_max_estimate
.. confval:: mon_mds_skip_sanity
.. confval:: mon_max_mdsmap_epochs
.. confval:: mon_config_key_max_entry_size
.. confval:: mon_scrub_interval
.. confval:: mon_scrub_max_keys
.. confval:: mon_compact_on_start
.. confval:: mon_compact_on_bootstrap
.. confval:: mon_compact_on_trim
.. confval:: mon_cpu_threads
.. confval:: mon_osd_mapping_pgs_per_chunk
.. confval:: mon_session_timeout
.. confval:: mon_osd_cache_size_min
.. confval:: mon_memory_target
.. confval:: mon_memory_autotune
.. _Paxos: https://en.wikipedia.org/wiki/Paxos_(computer_science)
.. _Monitor Keyrings: ../../../dev/mon-bootstrap#secret-keys
@ -880,7 +638,5 @@ Miscellaneous
.. _Monitoring a Cluster: ../../operations/monitoring
.. _Monitoring OSDs and PGs: ../../operations/monitoring-osd-pg
.. _Bootstrapping a Monitor: ../../../dev/mon-bootstrap
.. _Changing a Monitor's IP Address: ../../operations/add-or-rm-mons#changing-a-monitor-s-ip-address
.. _Monitor/OSD Interaction: ../mon-osd-interaction
.. _Scalability and High Availability: ../../../architecture#scalability-and-high-availability
.. _Pool values: ../../operations/pools/#set-pool-values

17
doc/rados/configuration/osd-config-ref.rst
View File

@ -179,6 +179,9 @@ scrubbing operations.
Operations
==========
.. confval:: osd_op_num_shards
.. confval:: osd_op_num_shards_hdd
.. confval:: osd_op_num_shards_ssd
.. confval:: osd_op_queue
.. confval:: osd_op_queue_cut_off
.. confval:: osd_client_op_priority
@ -285,8 +288,8 @@ queues within Ceph. First, requests to an OSD are sharded by their
placement group identifier. Each shard has its own mClock queue and
these queues neither interact nor share information among them. The
number of shards can be controlled with the configuration options
``osd_op_num_shards``, ``osd_op_num_shards_hdd``, and
``osd_op_num_shards_ssd``. A lower number of shards will increase the
:confval:`osd_op_num_shards`, :confval:`osd_op_num_shards_hdd`, and
:confval:`osd_op_num_shards_ssd`. A lower number of shards will increase the
impact of the mClock queues, but may have other deleterious effects.
Second, requests are transferred from the operation queue to the
@ -303,11 +306,11 @@ the impact of mClock, we want to keep as few operations in the
operation sequencer as possible. So we have an inherent tension.
The configuration options that influence the number of operations in
the operation sequencer are ``bluestore_throttle_bytes``,
``bluestore_throttle_deferred_bytes``,
``bluestore_throttle_cost_per_io``,
``bluestore_throttle_cost_per_io_hdd``, and
``bluestore_throttle_cost_per_io_ssd``.
the operation sequencer are :confval:`bluestore_throttle_bytes`,
:confval:`bluestore_throttle_deferred_bytes`,
:confval:`bluestore_throttle_cost_per_io`,
:confval:`bluestore_throttle_cost_per_io_hdd`, and
:confval:`bluestore_throttle_cost_per_io_ssd`.
A third factor that affects the impact of the mClock algorithm is that
we're using a distributed system, where requests are made to multiple

64
src/common/options/global.yaml.in
View File

@ -1608,6 +1608,10 @@ options:
default: false
services:
- mon
fmt_desc: Compact the database used as Ceph Monitor store on
``ceph-mon`` start. A manual compaction helps to shrink the
monitor database and improve the performance of it if the regular
compaction fails to work.
with_legacy: true
# trigger leveldb compaction on bootstrap
- name: mon_compact_on_bootstrap
@ -1616,6 +1620,10 @@ options:
default: false
services:
- mon
fmt_desc: Compact the database used as Ceph Monitor store
on bootstrap. Monitors probe each other to establish
a quorum after bootstrap. If a monitor times out before joining the
quorum, it will start over and bootstrap again.
with_legacy: true
# compact (a prefix) when we trim old states
- name: mon_compact_on_trim
@ -1624,6 +1632,7 @@ options:
default: true
services:
- mon
fmt_desc: Compact a certain prefix (including paxos) when we trim its old states.
with_legacy: true
- name: mon_osdmap_full_prune_enabled
type: bool
@ -1683,6 +1692,8 @@ options:
type: size
level: advanced
desc: The minimum amount of bytes to be kept mapped in memory for osd monitor caches.
fmt_desc: The minimum amount of bytes to be kept mapped in memory for osd
monitor caches.
default: 128_M
services:
- mon
@ -1692,6 +1703,8 @@ options:
level: basic
desc: The amount of bytes pertaining to osd monitor caches and kv cache to be kept
mapped in memory with cache auto-tuning enabled
fmt_desc: The amount of bytes pertaining to OSD monitor caches and KV cache
to be kept mapped in memory with cache auto-tuning enabled.
default: 2_G
services:
- mon
@ -1702,6 +1715,8 @@ options:
type: bool
level: basic
desc: Autotune the cache memory being used for osd monitors and kv database
fmt_desc: Autotune the cache memory used for OSD monitors and KV
database.
default: true
services:
- mon
@ -1712,6 +1727,7 @@ options:
type: int
level: advanced
desc: worker threads for CPU intensive background work
fmt_desc: Number of threads for performing CPU intensive work on monitor.
default: 4
services:
- mon
@ -1720,6 +1736,8 @@ options:
type: int
level: dev
desc: granularity of PG placement calculation background work
fmt_desc: We calculate the mapping from placement group to OSDs in chunks.
This option specifies the number of placement groups per chunk.
default: 4096
services:
- mon
@ -1762,6 +1780,8 @@ options:
type: int
level: advanced
desc: close inactive mon client connections after this many seconds
fmt_desc: Monitor will terminate inactive sessions stay idle over this
time limit.
default: 5_min
services:
- mon
@ -1770,6 +1790,9 @@ options:
type: float
level: dev
desc: subscribe interval for pre-jewel clients
fmt_desc: The refresh interval (in seconds) for subscriptions. The
subscription mechanism enables obtaining cluster maps
and log information.
default: 1_day
services:
- mon
@ -1972,6 +1995,10 @@ options:
type: bool
level: dev
desc: minimize peering work by priming pg_temp values after a map change
fmt_desc: Enables or disables priming the PGMap with the previous OSDs when an ``out``
OSD comes back into the cluster. With the ``true`` setting, clients
will continue to use the previous OSDs until the newly ``in`` OSDs for
a PG have peered.
default: true
services:
- mon
@ -1980,6 +2007,8 @@ options:
type: float
level: dev
desc: maximum time to spend precalculating PG mappings on map change (seconds)
fmt_desc: How much time in seconds the monitor should spend trying to prime the
PGMap when an out OSD comes back into the cluster.
default: 0.5
services:
- mon
@ -1989,6 +2018,8 @@ options:
level: advanced
desc: calculate all PG mappings if estimated fraction of PGs that change is above
this amount
fmt_desc: Maximum estimate of time spent on each PG before we prime all PGs
in parallel.
default: 0.25
services:
- mon
@ -1998,6 +2029,7 @@ options:
level: advanced
desc: number of PGMaps stats over which we calc the average read/write throughput
of the whole cluster
fmt_desc: Ceph will smooth statistics over the last ``N`` PG maps.
default: 6
services:
- mgr
@ -2335,6 +2367,7 @@ options:
type: bool
level: advanced
desc: allow pool deletions
fmt_desc: Should monitors allow pools to be removed, regardless of what the pool flags say?
default: false
services:
- mon
@ -2354,6 +2387,7 @@ options:
long_desc: This setting caps how many new clients can authenticate with the cluster
before the monitors have to perform a write to preallocate more. Large values
burn through the 64-bit ID space more quickly.
fmt_desc: The number of global IDs to pre-allocate for clients and daemons in the cluster.
default: 10000
services:
- mon
@ -2566,6 +2600,7 @@ options:
type: int
level: advanced
desc: max number of FSMaps/MDSMaps to store
fmt_desc: The maximum number of mdsmap epochs to trim during a single proposal.
default: 500
services:
- mon
@ -2581,6 +2616,7 @@ options:
type: int
level: advanced
desc: max number of OSDs in a cluster
fmt_desc: The maximum number of OSDs allowed in the cluster.
default: 10000
services:
- mon
@ -2589,6 +2625,7 @@ options:
type: float
level: advanced
desc: timeout for querying other mons during bootstrap pre-election phase (seconds)
fmt_desc: Number of seconds the monitor will wait to find peers before bootstrapping.
default: 2
services:
- mon
@ -2597,6 +2634,7 @@ options:
type: size
level: advanced
desc: max bytes of outstanding client messages mon will read off the network
fmt_desc: The amount of client message data allowed in memory (in bytes).
default: 100_M
services:
- mon
@ -2605,6 +2643,7 @@ options:
type: size
level: advanced
desc: max bytes of outstanding mon messages mon will read off the network
fmt_desc: The message memory cap for metadata server and OSD messages (in bytes).
default: 400_M
services:
- mon
@ -2629,6 +2668,7 @@ options:
type: int
level: advanced
desc: max cluster log entries per paxos event
fmt_desc: The maximum number of log entries per event.
default: 4096
services:
- mon
@ -2773,6 +2813,9 @@ options:
type: secs
level: advanced
desc: frequency for scrubbing mon database
fmt_desc: How often the monitor scrubs its store by comparing
the stored checksums with the computed ones for all stored
keys. (0 disables it. dangerous, use with care)
default: 1_day
services:
- mon
@ -2789,6 +2832,7 @@ options:
type: int
level: advanced
desc: max keys per on scrub chunk/step
fmt_desc: The maximum number of keys to scrub each time.
default: 100
services:
- mon
@ -2815,6 +2859,7 @@ options:
type: size
level: advanced
desc: Defines the number of bytes allowed to be held in a single config-key entry
fmt_desc: The maximum size of config-key entry (in bytes)
default: 64_K
services:
- mon
@ -2925,6 +2970,9 @@ options:
type: bool
level: advanced
desc: skip sanity checks on fsmap/mdsmap
fmt_desc: Skip safety assertions on FSMap (in case of bugs where we want to
continue anyway). Monitor terminates if the FSMap sanity check
fails, but we can disable it by enabling this option.
default: false
services:
- mon
@ -3441,6 +3489,8 @@ options:
type: float
level: advanced
default: 3
fmt_desc: The client will try a new monitor every ``N`` seconds until it
establishes a connection.
with_legacy: true
# send logs every N seconds
- name: mon_client_log_interval
@ -3454,6 +3504,7 @@ options:
type: float
level: advanced
default: 10
fmt_desc: The client will ping the monitor every ``N`` seconds.
with_legacy: true
# fail if we don't hear back
- name: mon_client_ping_timeout
@ -3480,6 +3531,8 @@ options:
type: int
level: advanced
default: 1000
fmt_desc: The maximum number of log entries a monitor will generate
per client message.
with_legacy: true
- name: mon_client_directed_command_retry
type: int
@ -3910,6 +3963,9 @@ options:
type: bool
level: advanced
desc: set ec_fast_read for new erasure-coded pools
fmt_desc: Whether to turn on fast read on the pool or not. It will be used as
the default setting of newly created erasure coded pools if ``fast_read``
is not specified at create time.
default: false
services:
- mon
@ -4063,6 +4119,7 @@ options:
type: bool
level: advanced
desc: set nodelete flag on new pools
fmt_desc: Set the ``nodelete`` flag on new pools, which prevents pool removal.
default: false
services:
- mon
@ -4072,6 +4129,7 @@ options:
type: bool
level: advanced
desc: set nopgchange flag on new pools
fmt_desc: Set the ``nopgchange`` flag on new pools. Does not allow the number of PGs to be changed.
default: false
services:
- mon
@ -4081,6 +4139,7 @@ options:
type: bool
level: advanced
desc: set nosizechange flag on new pools
fmt_desc: Set the ``nosizechange`` flag on new pools. Does not allow the ``size`` to be changed.
default: false
services:
- mon
@ -4348,6 +4407,9 @@ options:
- name: osd_op_num_shards
type: int
level: advanced
fmt_desc: The number of shards allocated for a given OSD. Each shard has its own processing queue.
PGs on the OSD are distributed evenly in the shard. This setting overrides _ssd and _hdd if
non-zero.
default: 0
flags:
- startup
@ -4355,6 +4417,7 @@ options:
- name: osd_op_num_shards_hdd
type: int
level: advanced
fmt_desc: the number of shards allocated for a given OSD (for rotational media).
default: 5
see_also:
- osd_op_num_shards
@ -4364,6 +4427,7 @@ options:
- name: osd_op_num_shards_ssd
type: int
level: advanced
fmt_desc: the number of shards allocated for a given OSD (for solid state media).
default: 8
see_also:
- osd_op_num_shards