=========================================
It is possible to convert some existing clusters so that they can be managed
-with ``cephadm``. This statment applies to some clusters that were deployed
+with ``cephadm``. This statement applies to some clusters that were deployed
with ``ceph-deploy``, ``ceph-ansible``, or ``DeepSea``.
This section of the documentation explains how to determine whether your
cephadm ls
- Before starting the converstion process, ``cephadm ls`` shows all existing
+ Before starting the conversion process, ``cephadm ls`` shows all existing
daemons to have a style of ``legacy``. As the adoption process progresses,
adopted daemons will appear with a style of ``cephadm:v1``.
see :ref:`cephadm-osd-removal` for more details about osd removal
-You can check if there are no deamons left on the host with the following:
+You can check if there are no daemons left on the host with the following:
.. prompt:: bash #
==========================================
Hosts can contain a ``location`` identifier which will instruct cephadm to
-create a new CRUSH host located in the specified hierachy.
+create a new CRUSH host located in the specified hierarchy.
.. code-block:: yaml
.. danger:: THIS OPERATION WILL DESTROY ALL DATA STORED IN THIS CLUSTER
-In order to destory a cluster and delete all data stored in this cluster, pause
+In order to destroy a cluster and delete all data stored in this cluster, pause
cephadm to avoid deploying new daemons.
.. prompt:: bash #
count: 3
label: myfs
-This service specifcation instructs cephadm to deploy three daemons on hosts
+This service specification instructs cephadm to deploy three daemons on hosts
labeled ``myfs`` across the cluster.
If there are fewer than three daemons deployed on the candidate hosts, cephadm
ceph orch apply mon --placement="newhost1,newhost2,newhost3"
-Futher Reading
-==============
+Further Reading
+===============
* :ref:`rados-operations`
* :ref:`rados-troubleshooting-mon`
set of hosts. Typically you will have a spec for multiple hosts with the
same layout.
-The sevice id as the unique key: In case a new OSD spec with an already
-applied service id is applied, the existing OSD spec will be superseeded.
+The service id as the unique key: In case a new OSD spec with an already
+applied service id is applied, the existing OSD spec will be superseded.
cephadm will now create new OSD daemons based on the new spec
definition. Existing OSD daemons will not be affected. See :ref:`cephadm-osd-declarative`.
This will scan all existing disks for OSDs and deploy corresponding daemons.
-Futher Reading
-==============
+Further Reading
+===============
* :ref:`ceph-volume`
* :ref:`rados-index`
=================================
The *ingress* service allows you to create a high availability endpoint
-for RGW with a minumum set of configuration options. The orchestrator will
+for RGW with a minimum set of configuration options. The orchestrator will
deploy and manage a combination of haproxy and keepalived to provide load
balancing on a floating virtual IP.
0: [v2:127.0.0.1:3300/0,v1:127.0.0.1:6789/0] mon.myhostname
This command sets up the environment in a way that is suitable
-for extended daemon maintenance and running the deamon interactively.
+for extended daemon maintenance and running the daemon interactively.
.. _cephadm-restore-quorum:
ceph config get "mgr.hostname.smfvfd" container_image
-Create a file ``config-json.json`` which contains the information neccessary to deploy
+Create a file ``config-json.json`` which contains the information necessary to deploy
the daemon:
.. code-block:: json
as pre-issuing capabilities could reduce latency in some cases.
If there is only one client, usually it will be the loner client for all the inodes.
-While in multiple clients case, the MDS will try to caculate a loner client out for
+While in multiple clients case, the MDS will try to calculate a loner client out for
each inode depending on the capabilities the clients (needed | wanted), but usually
it will fail. The loner client will always get all the capabilities.
$ ceph fs snapshot mirror remove <fs_name> <path>
Only absolute directory paths are allowed. Also, paths are normalized by the mirroring
-module, therfore, `/a/b/../b` is equivalent to `/a/b`.
+module, therefore, `/a/b/../b` is equivalent to `/a/b`.
$ mkdir -p /d0/d1/d2
$ ceph fs snapshot mirror add cephfs /d0/d1/d2
Error EEXIST: directory /d0/d1/d2 is already tracked
Once a directory is added for mirroring, its subdirectory or ancestor directories are
-disallowed to be added for mirorring::
+disallowed to be added for mirroring::
$ ceph fs snapshot mirror add cephfs /d0/d1
Error EINVAL: /d0/d1 is a ancestor of tracked path /d0/d1/d2
This allows a user to add a non-existent directory for synchronization. The mirror daemon
would mark the directory as failed and retry (less frequently). When the directory comes
-to existence, the mirror daemons would unmark the failed state upon successfull snapshot
+to existence, the mirror daemons would unmark the failed state upon successful snapshot
synchronization.
When mirroring is disabled, the respective `fs mirror status` command for the file system
scan_extents phase before any workers enter the scan_inodes phase.
After completing the metadata recovery, you may want to run cleanup
-operation to delete ancillary data geneated during recovery.
+operation to delete ancillary data generated during recovery.
::
ceph-mgr volumes module to manage the CephFS exports.
The ceph-mgr volumes module implements the following file system export
-abstactions:
+abstractions:
* FS volumes, an abstraction for CephFS file systems
$ ceph fs subvolume rm <vol_name> <clone_name> [--group_name <group_name>] --force
.. note:: Cloning only synchronizes directories, regular files and symbolic links. Also, inode timestamps (access and
- modification times) are synchronized upto seconds granularity.
+ modification times) are synchronized up to seconds granularity.
An `in-progress` or a `pending` clone operation can be canceled. To cancel a clone operation use the `clone cancel` command::
$ ceph fs clone cancel <vol_name> <clone_name> [--group_name <group_name>]
-On successful cancelation, the cloned subvolume is moved to `canceled` state::
+On successful cancellation, the cloned subvolume is moved to `canceled` state::
$ ceph fs subvolume snapshot clone cephfs subvol1 snap1 clone1
$ ceph fs clone cancel cephfs clone1
MDS_SLOW_REQUEST 1 MDSs report slow requests
mds.fs-01(mds.0): 5 slow requests are blocked > 30 secs
-Where, for intance, ``MDS_SLOW_REQUEST`` is the unique code representing the
+Where, for instance, ``MDS_SLOW_REQUEST`` is the unique code representing the
condition where requests are taking long time to complete. And the following
description shows its severity and the MDS daemons which are serving these
slow requests.
============
LazyIO includes two methods ``lazyio_propagate()`` and ``lazyio_synchronize()``.
-With LazyIO enabled, writes may not be visble to other clients until
+With LazyIO enabled, writes may not be visible to other clients until
``lazyio_propagate()`` is called. Reads may come from local cache (irrespective of
changes to the file by other clients) until ``lazyio_synchronize()`` is called.
/* The barrier makes sure changes associated with all file descriptors
are propagated so that there is certainty that the backing file
- is upto date */
+ is up to date */
application_specific_barrier();
char in_buf[40];
This document does NOT define a specific proposal or some future work.
Instead it merely lists a few thoughts that MIGHT be relevant for future
-cephadm enhacements.
+cephadm enhancements.
*******
Intro
$ ceph fs snapshot mirror remove <fs_name> <path>
Only absolute directory paths are allowed. Also, paths are normalized by the mirroring
-module, therfore, `/a/b/../b` is equivalent to `/a/b`.
+module, therefore, `/a/b/../b` is equivalent to `/a/b`.
$ mkdir -p /d0/d1/d2
$ ceph fs snapshot mirror add cephfs /d0/d1/d2
Error EEXIST: directory /d0/d1/d2 is already tracked
Once a directory is added for mirroring, its subdirectory or ancestor directories are
-disallowed to be added for mirorring::
+disallowed to be added for mirroring::
$ ceph fs snapshot mirror add cephfs /d0/d1
Error EINVAL: /d0/d1 is a ancestor of tracked path /d0/d1/d2
This allows a user to add a non-existent directory for synchronization. The mirror daemon
would mark the directory as failed and retry (less frequently). When the directory comes
-to existence, the mirror daemons would unmark the failed state upon successfull snapshot
+to existence, the mirror daemons would unmark the failed state upon successful snapshot
synchronization.
When mirroring is disabled, the respective `fs mirror status` command for the file system
is a server offering RESTful API allowing the clients to query the
information of repos hosted by chacra nodes. Shaman is also known
for its `Web UI`_. But please note, shaman does not build the
- packages, it justs offers information of the builds.
+ packages, it just offers information on the builds.
As the following shows, `chacra`_ manages multiple projects whose metadata
are stored in a database. These metadata are exposed via Shaman as a web
- pmdk
``make-dist`` is a script used by our CI pipeline to create dist tarball so the
-tarball can be used to build the Ceph packages in a clean room environmet. When
+tarball can be used to build the Ceph packages in a clean room environment. When
we need to upgrade these third party libraries, we should
- update the CMake script
a unique id of a given version of a set packages. This id is used to reference
the set packages under the ``<project>/<branch>``. It is a good practice to
version the packaging recipes, like the ``debian`` directory for building deb
- packages and the ``spec`` for building rpm packages, and use ths sha1 of the
- packaging receipe for the ``ref``. But you could also the a random string for
+ packages and the ``spec`` for building rpm packages, and use the sha1 of the
+ packaging receipe for the ``ref``. But you could also use a random string for
``ref``, like the tag name of the built source tree.
distro
------------------------
Crimson collects the per-pg, per-pool, and per-osd stats in a `MPGStats`
-messsage, and send it over to mgr, so that the mgr modules can query
+message, and send it over to mgr, so that the mgr modules can query
them using the `MgrModule.get()` method.
asock command
* Worst case
- At least three writes are required additionally on WAL, object metadata, and data blocks.
- - If the flush from WAL to the data parition occurs frequently, radix tree onode structure needs to be update
+ - If the flush from WAL to the data partition occurs frequently, radix tree onode structure needs to be update
in many times. To minimize such overhead, we can make use of batch processing to minimize the update on the tree
(the data related to the object has a locality because it will have the same parent node, so updates can be minimized)
.. code-block:: c
- stuct onode {
+ struct onode {
extent_tree block_maps;
b+_tree omaps;
map xattrs;
* Omap and xattr
In this design, omap and xattr data is tracked by b+tree in onode. The onode only has the root node of b+tree.
- The root node contains entires which indicate where the key onode exists.
+ The root node contains entries which indicate where the key onode exists.
So, if we know the onode, omap can be found via omap b+tree.
* Fragmentation
WAL
---
Each SP has a WAL.
-The datas written to the WAL are metadata updates, free space update and small data.
+The data written to the WAL are metadata updates, free space update and small data.
Note that only data smaller than the predefined threshold needs to be written to the WAL.
The larger data is written to the unallocated free space and its onode's extent_tree is updated accordingly
(also on-disk extent tree). We statically allocate WAL partition aside from data partition pre-configured.
.. option:: -k
- Keep old configuration files instead of overwritting theses.
+ Keep old configuration files instead of overwriting these.
.. option:: -K, --kstore
{OSD,MDS,MON,RGW}
-Theses environment variables will contains the number of instances of the desired ceph process you want to start.
+These environment variables will contains the number of instances of the desired ceph process you want to start.
Example: ::
Code can be tested by building Ceph locally from source, starting a vstart
cluster, and running any suite against it.
-Similar to S3-Tests, other workunits can be run against by configuring your enviroment.
+Similar to S3-Tests, other workunits can be run against by configuring your environment.
-Set up the enviroment
-^^^^^^^^^^^^^^^^^^^^^
+Set up the environment
+^^^^^^^^^^^^^^^^^^^^^^
-Configure your enviroment::
+Configure your environment::
$ . ./build/vstart_enviroment.sh
* environment setup (`testing on varied
systems <https://github.com/ceph/ceph/tree/master/qa/distros/supported>`_):
- testing compatibility with stable realeases for supported versions.
+ testing compatibility with stable releases for supported versions.
* permutation of config values: for instance, `qa/suites/rados/thrash
<https://github.com/ceph/ceph/tree/master/qa/suites/rados/thrash>`_ ensures
User documentation
==================
-The documentation on docs.ceph.com is generated from the restructuredText
+The documentation on docs.ceph.com is generated from the reStructuredText
sources in ``/doc/`` in the Ceph git repository.
Please make sure that your changes are written in a way that is intended
boil down
---------
-* if `format_version >= current_version` then format is uptodate, return.
+* if `format_version >= current_version` then format is up-to-date, return.
* if `features doesn't contain LUMINOUS` then `current_version = 1`
* else if `features doesn't contain MIMIC` then `current_version = 2`
* else `current_version = 3`
Post-compression frame format
-----------------------------
-Depending on the negotiated connection mode from TAG_COMPRESSION_DONE, the connection is able to acccept/send compressed frames or process all frames as decompressed.
+Depending on the negotiated connection mode from TAG_COMPRESSION_DONE, the connection is able to accept/send compressed frames or process all frames as decompressed.
# msgr2.x-force mode
the PG log to determine what needs to be done. This is known as *asynchronous
recovery*.
-The threashold for performing asynchronous recovery instead of synchronous
+The threshold for performing asynchronous recovery instead of synchronous
recovery is not a clear-cut. There are a few criteria which
need to be met for asynchronous recovery:
``pg_info_t::last_update``. Furthermore, we maintain a log of "recent"
operations extending back at least far enough to include any
*unstable* writes (writes which have been started but not committed)
-and objects which aren't uptodate locally (see recovery and
+and objects which aren't up-to-date locally (see recovery and
backfill). In practice, the log will extend much further
(``osd_min_pg_log_entries`` when clean and ``osd_max_pg_log_entries`` when not
clean) because it's handy for quickly performing recovery.
For RBD, the primary goal is for either an OSD-internal agent or a
cluster-external agent to be able to transparently shift portions
-of the consituent 4MB extents between a dedup pool and a hot base
+of the constituent 4MB extents between a dedup pool and a hot base
pool.
As such, RBD operations (including class operations and snapshots)
+---------+---------------------------+------------+---------------------------------------------------------------------------------------------------------+-------------+
| PUT | Object copy | Yes | | |
+---------+---------------------------+------------+---------------------------------------------------------------------------------------------------------+-------------+
-| PUT | Initate multipart upload | Yes | | |
+| PUT | Initiate multipart upload | Yes | | |
+---------+---------------------------+------------+---------------------------------------------------------------------------------------------------------+-------------+
| PUT | Upload Part | Yes | | |
+---------+---------------------------+------------+---------------------------------------------------------------------------------------------------------+-------------+
bytes, which would be expensive (or verbose) to express purely as a
sequence of byte operations. As such, each delta indicates the type
as well as the location of the corresponding extent. Each block
-type can therefore implement CachedExtent::apply_delta as appopriate.
+type can therefore implement CachedExtent::apply_delta as appropriate.
See src/os/crimson/seastore/cached_extent.h.
See src/os/crimson/seastore/cache.h.
the faulting module name and path as well as the exception code.
Please note that in order to analyze crash dumps, the debug symbols are required.
-We're currently buidling Ceph using ``MinGW``, so by default ``DWARF`` symbols will
+We're currently building Ceph using ``MinGW``, so by default ``DWARF`` symbols will
be embedded in the binaries. ``windbg`` does not support such symbols but ``gdb``
can be used.
-----------------------------
tracing in Ceph is disabled by default.
-it could be enabled globally, or for each entity seperately (e.g. rgw).
+it could be enabled globally, or for each entity separately (e.g. rgw).
Enable tracing globally::
BlueFS log rescue
=====================
-Some versions of BlueStore were susceptible to BlueFS log growing extremaly large -
+Some versions of BlueStore were susceptible to BlueFS log growing extremely large -
beyond the point of making booting OSD impossible. This state is indicated by
booting that takes very long and fails in _replay function.
This can be fixed by::
ceph-bluestore-tool fsck --path *osd path* --bluefs_replay_recovery=true
-It is advised to first check if rescue process would be successfull::
+It is advised to first check if rescue process would be successful::
ceph-bluestore-tool fsck --path *osd path* \
--bluefs_replay_recovery=true --bluefs_replay_recovery_disable_compact=true
override the ``$pid`` when expanding options. For example, if an option is
configured like ``/var/log/$name.$pid.log``, the ``$pid`` portion in its
- value will be substituded using the PID of **ceph-conf** instead of the
- PID of the process specfied using the ``--name`` option.
+ value will be substituted using the PID of **ceph-conf** instead of the
+ PID of the process specified using the ``--name`` option.
.. option:: -r, --resolve-search
.. option:: select_test <n>
- Select the given build-in test instance as a the in-memory instance
+ Select the given built-in test instance as the in-memory instance
of the type.
.. option:: get_features
Description
===========
-:program:`ceph-diff-sorted` is a simplifed *diff* utility optimized
+:program:`ceph-diff-sorted` is a simplified *diff* utility optimized
for comparing two files with lines that are lexically sorted.
The output is simplified in comparison to that of the standard `diff`
mount.ceph name@07fe3187-00d9-42a3-814b-72a4d5e7d5be.fs_name=/ /mnt/mycephfs -o mon_addr=1.2.3.4
Mount helper can fill in the cluster FSID by reading the ceph configuration file.
-Its recommeded to call the mount helper via mount(8) as per::
+Its recommended to call the mount helper via mount(8) as per::
mount -t ceph name@.fs_name=/ /mnt/mycephfs -o mon_addr=1.2.3.4
more than :confval:`mon_mgr_beacon_grace`, then it will be replaced
by a standby.
-If you want to pre-empt failover, you can explicitly mark a ceph-mgr
+If you want to preempt failover, you can explicitly mark a ceph-mgr
daemon as failed using ``ceph mgr fail <mgr name>``.
Using modules
Many Ceph tools return results in JSON format. We suggest that
you install the `jq <https://stedolan.github.io/jq>`_ command-line
- utility to faciliate working with JSON data.
+ utility to facilitate working with JSON data.
Accessing the Dashboard
**block (data) only**
^^^^^^^^^^^^^^^^^^^^^
If all devices are the same type, for example all rotational drives, and
-there are no fast devices to use for metadata, it makes sense to specifiy the
+there are no fast devices to use for metadata, it makes sense to specify the
block device only and to not separate ``block.db`` or ``block.wal``. The
:ref:`ceph-volume-lvm` command for a single ``/dev/sda`` device looks like::
specific partition / LV sizes that correspond to sums of L0, L0+L1, L1+L2,
etc. sizes, which with default settings means roughly 3 GB, 30 GB, 300 GB, and
so forth. Most deployments will not substantially benefit from sizing to
-accomodate L3 and higher, though DB compaction can be facilitated by doubling
+accommodate L3 and higher, though DB compaction can be facilitated by doubling
these figures to 6GB, 60GB, and 600GB.
Improvements in releases beginning with Nautilus 14.2.12 and Octopus 15.2.6
Each Ceph cluster has an internal name that is used as part of configuration
and log file names as well as directory and mountpoint names. This name
defaults to "ceph". Previous releases of Ceph allowed one to specify a custom
-name instead, for example "ceph2". This was intended to faciliate running
+name instead, for example "ceph2". This was intended to facilitate running
multiple logical clusters on the same physical hardware, but in practice this
was rarely exploited and should no longer be attempted. Prior documentation
could also be misinterpreted as requiring unique cluster names in order to
strongly recommended to deploy all new clusters with the default name "ceph".
Some Ceph CLI commands accept an optional ``--cluster`` (cluster name) option. This
-option is present purely for backward compatibility and need not be accomodated
+option is present purely for backward compatibility and need not be accommodated
by new tools and deployments.
If you do need to allow multiple clusters to exist on the same host, please use
One or more PGs has not been scrubbed recently. PGs are normally scrubbed
within every configured interval specified by
:confval:`osd_scrub_max_interval` globally. This
-interval can be overriden on per-pool basis with
+interval can be overridden on per-pool basis with
:confval:`scrub_max_interval`. The warning triggers when
``mon_warn_pg_not_scrubbed_ratio`` percentage of interval has elapsed without a
scrub since it was due.
the cache pool but have not been flushed yet to the base pool. This field is
only available when cache tiering is in use.
- **USED COMPR:** amount of space allocated for compressed data (i.e. this
- includes comrpessed data plus all the allocation, replication and erasure
+ includes compressed data plus all the allocation, replication and erasure
coding overhead).
- **UNDER COMPR:** amount of data passed through compression (summed over all
replicas) and beneficial enough to be stored in a compressed form.
ceph osd dump
You can also check view OSDs according to their position in the CRUSH map by
-using the folloiwng command:
+using the following command:
.. prompt:: bash #
and consistency. If there's a failure in your network or a loss of nodes and
you can restore service, Ceph will return to normal functionality on its own.
-But there are scenarios where you lose data availibility despite having
+But there are scenarios where you lose data availability despite having
enough servers available to satisfy Ceph's consistency and sizing constraints, or
where you may be surprised to not satisfy Ceph's constraints.
The first important category of these failures resolve around inconsistent
$ ceph mon set_location e datacenter=site3
$ ceph mon enable_stretch_mode e stretch_rule datacenter
-When stretch mode is enabled, the OSDs wlll only take PGs active when
+When stretch mode is enabled, the OSDs will only take PGs active when
they peer across data centers (or whatever other CRUSH bucket type
you specified), assuming both are alive. Pools will increase in size
from the default 3 to 4, expecting 2 copies in each site. OSDs will only
**Are you able to reach to the mon nodes?**
Doesn't happen often, but sometimes there are ``iptables`` rules that
- block accesse to mon nodes or TCP ports. These may be leftovers from
+ block access to mon nodes or TCP ports. These may be leftovers from
prior stress-testing or rule development. Try SSHing into
the server and, if that succeeds, try connecting to the monitor's ports
(``tcp/3300`` and ``tcp/6789``) using a ``telnet``, ``nc``, or similar tools.
The maximum tolerated clock skew is configurable via the
``mon-clock-drift-allowed`` option, and
although you *CAN* you almost certainly *SHOULDN'T*. The clock skew mechanism
- is in place because clock-skewed monitors are liely to misbehave. We, as
+ is in place because clock-skewed monitors are likely to misbehave. We, as
developers and QA aficionados, are comfortable with the current default
value, as it will alert the user before the monitors get out hand. Changing
this value may cause unforeseen effects on the
When OSDs peer and check heartbeats, they use the cluster (back-end)
network when it's available. See `Monitor/OSD Interaction`_ for details.
-We have tradtionally recommended separate *public* (front-end) and *private*
+We have traditionally recommended separate *public* (front-end) and *private*
(cluster / back-end / replication) networks:
#. Segregation of heartbeat and replication / recovery traffic (private)
Object modification & Limitations
----------------------------------
-The cloud storage class once configured can then be used like any other storage class in the bucket lifecyle rules. For example,
+The cloud storage class once configured can then be used like any other storage class in the bucket lifecycle rules. For example,
::
* Federation between RGW and Cloud services.
-* Support transition to other cloud provideres (like Azure).
+* Support transition to other cloud providers (like Azure).
.. _`Multisite Configuration`: ../multisite
contents, and updating and retrieving bucket statistics (e.g. for quota).
See the user-visible, encoded class 'cls_user_bucket_entry' and its
-nested class 'cls_user_bucket' for the values of these omap entires.
+nested class 'cls_user_bucket' for the values of these omap entries.
These listings are kept consistent with buckets in pool ".rgw".
# radosgw-admin script-package add --package='{package name} {package version}' [--allow-compilation]
-* When adding a diffrent version of a package which already exists in the list, the newly
+* When adding a different version of a package which already exists in the list, the newly
added version will override the existing one.
* When adding a package without a version specified, the latest version of the package
function print_owner(owner)
RGWDebugLog("Owner:")
- RGWDebugLog(" Dispaly Name: " .. owner.DisplayName)
+ RGWDebugLog(" Display Name: " .. owner.DisplayName)
RGWDebugLog(" Id: " .. owner.User.Id)
- RGWDebugLog(" Tenanet: " .. owner.User.Tenant)
+ RGWDebugLog(" Tenant: " .. owner.User.Tenant)
end
function print_acl(acl_type)
Prefix can be defined to filter source objects.
Tags are passed by a comma separated list of 'key=value'.
Destination owner can be set to force a destination owner of the objects. If user mode is selected, only the destination bucket owner can be set.
-Destinatino storage class can also be condfigured.
+Destination storage class can also be configured.
User id can be set for user mode, and will be the user under which the sync operation will be executed (for permissions validation).
| predicate as a projection | where address like '%new-york%'; |
+---------------------------------+-----------------+-----------------------------------------------------------------------+
| an alias to | select (_1 like "_3_") as *likealias*,_1 from s3object |
-| predicate as a prjection | where *likealias* = true and cast(_1 as int) between 800 and 900; |
+| predicate as a projection | where *likealias* = true and cast(_1 as int) between 800 and 900; |
+---------------------------------+-----------------+-----------------------------------------------------------------------+
| casting operator | select cast(123 as int)%2 from s3object; |
+---------------------------------+-----------------+-----------------------------------------------------------------------+
**Deployment:**
-Perform the followint steps on the Ansible installer node.
+Perform the following steps on the Ansible installer node.
#. As ``root``, execute the Ansible playbook:
not supported by RBD, but can be applied to the raw RBD data using compatible
tools such as cryptsetup.
-The LUKS header size can vary (upto 136MiB in LUKS2), but is usually upto
+The LUKS header size can vary (up to 136MiB in LUKS2), but is usually up to
16MiB, depending on the version of `libcryptsetup` installed. For optimal
performance, the encryption format will set the data offset to be aligned with
the image object size. For example expect a minimum overhead of 8MiB if using
client admin socket allows the collection of metrics and can be invaluable
for troubleshooting.
-This socket can be accessed on the hypvervisor (Nova compute) node::
+This socket can be accessed on the hypervisor (Nova compute) node::
ceph daemon /var/run/ceph/ceph-client.cinder.19195.32310016.asok help
Cuttlefish is the 3rd stable release of Ceph. It is named after a type
of cephalopod (order Sepiida) characterized by a unique internal shell, the
-cuttlebone, which is used for control of bouyancy.
+cuttlebone, which is used for control of buoyancy.
v0.61.9 "Cuttlefish"
====================
+------------+-------------------+-------------+--------------------------------------------+
| 2018-07-10 | `CVE-2018-1128`_ | 7.5 High | Cephx replay vulnerability |
+------------+-------------------+-------------+--------------------------------------------+
-| 2018-07-27 | `CVE-2017-7519`_ | 4.4 Medium | libradosstriper unvaliated format string |
+| 2018-07-27 | `CVE-2017-7519`_ | 4.4 Medium | libradosstriper unvalidated format string |
+------------+-------------------+-------------+--------------------------------------------+
| 2018-08-01 | `CVE-2016-9579`_ | 7.6 High | potential RGW XSS attack |
+------------+-------------------+-------------+--------------------------------------------+
- python3-dev
- python3-pip
- python3-sphinx
-- pytnon3-venv
+- python3-venv
- libxml2-dev
- libxslt1-dev
- doxygen
Notify Us
---------
-In case The PR did not got a review within in a resonable timeframe, please get in touch
+In case The PR did not got a review within in a reasonable timeframe, please get in touch
with the corresponding component lead of the :ref:`clt`.
Documentation Style Guide
=========================
One objective of the Ceph documentation project is to ensure the readability of
-the documentation in both native restructuredText format and its rendered
+the documentation in both native reStructuredText format and its rendered
formats such as HTML. Navigate to your Ceph repository and view a document in
its native format. You may notice that it is generally as legible in a terminal
as it is in its rendered HTML format. Additionally, you may also notice that
.B STANDARD FILE CONTEXT
SELinux defines the file context types for the ceph, if you wanted to
-store files with these types in a diffent paths, you need to execute the semanage command to sepecify alternate labeling and then use restorecon to put the labels on disk.
+store files with these types in a diffent paths, you need to execute the semanage command to specify alternate labeling and then use restorecon to put the labels on disk.
.B semanage fcontext -a -t ceph_exec_t '/srv/ceph/content(/.*)?'
.br
projects / ceph.git / commitdiff