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ceph/doc/radosgw/admin.rst
Abhishek Lekshmanan daadff4cd0 doc: minor format fix for radosgw admin docs 
Missing backtick fixed

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
2014-07-11 18:03:54 +05:30

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=============
Admin Guide
=============
Once you have your Ceph Object Storage service up and running, you may
administer the service with user management, access controls, quotas
and usage tracking among other features.
User Management
===============
Ceph Object Storage user management refers to users of the Ceph Object Storage
service (i.e., not the Ceph Object Gateway as a user of the Ceph Storage
Cluster). You must create a user, access key and secret to enable end users to
interact with Ceph Object Gateway services.
There are two user types:
- **User:** The term 'user' reflects a user of the S3 interface.
- **Subuser:** The term 'subuser' reflects a user of the Swift interface. A subuser
is associated to a user .
.. ditaa:: +---------+
| User |
+----+----+
|
| +-----------+
+-----+ Subuser |
+-----------+
You can create, modify, view, suspend and remove users and subusers. In addition
to user and subuser IDs, you may add a display name and an email address for a
user. You can specify a key and secret, or generate a key and secret
automatically. When generating or specifying keys, note that user IDs correspond
to an S3 key type and subuser IDs correspond to a swift key type. Swift keys
also have access levels of ``read``, ``write``, ``readwrite`` and ``full``.
Create a User
-------------
To create a user (S3 interface), execute the following::
radosgw-admin user create --uid={username} --display-name="{display-name}" [--email={email}]
For example::
radosgw-admin user create --uid=johndoe --display-name="John Doe" --email=john@example.com
.. code-block:: javascript
{ "user_id": "johndoe",
"display_name": "John Doe",
"email": "john@example.com",
"suspended": 0,
"max_buckets": 1000,
"auid": 0,
"subusers": [],
"keys": [
{ "user": "johndoe",
"access_key": "11BS02LGFB6AL6H1ADMW",
"secret_key": "vzCEkuryfn060dfee4fgQPqFrncKEIkh3ZcdOANY"}],
"swift_keys": [],
"caps": [],
"op_mask": "read, write, delete",
"default_placement": "",
"placement_tags": [],
"bucket_quota": { "enabled": false,
"max_size_kb": -1,
"max_objects": -1},
"user_quota": { "enabled": false,
"max_size_kb": -1,
"max_objects": -1},
"temp_url_keys": []}
Creating a user also creates an ``access_key`` and ``secret_key`` entry for use
with any S3 API-compatible client.
.. important:: Check the key output. Sometimes ``radosgw-admin``
generates a JSON escape (``\``) character, and some clients
do not know how to handle JSON escape characters. Remedies include
removing the JSON escape character (``\``), encapsulating the string
in quotes, regenerating the key and ensuring that it
does not have a JSON escape character or specify the key and secret
manually.
Create a Subuser
----------------
To create a subuser (Swift interface) for the user, you must specify the user ID
(``--uid={username}``), a subuser ID and the access level for the subuser. ::
radosgw-admin subuser create --uid={uid} --subuser={uid} --access=[ read | write | readwrite | full ]
For example::
radosgw-admin subuser create --uid=johndoe --subuser=johndoe:swift --access=full
.. note:: ``full`` is not ``readwrite``, as it also includes the access control policy.
.. code-block:: javascript
{ "user_id": "johndoe",
"display_name": "John Doe",
"email": "john@example.com",
"suspended": 0,
"max_buckets": 1000,
"auid": 0,
"subusers": [
{ "id": "johndoe:swift",
"permissions": "full-control"}],
"keys": [
{ "user": "johndoe",
"access_key": "11BS02LGFB6AL6H1ADMW",
"secret_key": "vzCEkuryfn060dfee4fgQPqFrncKEIkh3ZcdOANY"}],
"swift_keys": [],
"caps": [],
"op_mask": "read, write, delete",
"default_placement": "",
"placement_tags": [],
"bucket_quota": { "enabled": false,
"max_size_kb": -1,
"max_objects": -1},
"user_quota": { "enabled": false,
"max_size_kb": -1,
"max_objects": -1},
"temp_url_keys": []}
Get User Info
-------------
To get information about a user, you must specify ``user info`` and the user ID
(``--uid={username}``) . ::
radosgw-admin user info --uid=johndoe
Modify User Info
----------------
To modify information about a user, you must specify the user ID (``--uid={username}``)
and the attributes you want to modify. Typical modifications are to keys and secrets,
email addresses, display names and access levels. For example::
radosgw-admin user modify --uid=johndoe --display-name="John E. Doe"
To modify subuser values, specify ``subuser modify`` and the subuser ID. For example::
radosgw-admin subuser modify --uid=johndoe:swift --access=full
User Enable/Suspend
-------------------
When you create a user, the user is enabled by default. However, you may suspend
user privileges and re-enable them at a later time. To suspend a user, specify
``user suspend`` and the user ID. ::
radosgw-admin user suspend --uid=johndoe
To re-enable a suspended user, specify ``user enable`` and the user ID. ::
radosgw-admin user enable --uid=johndoe
.. note:: Disabling the user disables the subuser.
Remove a User
-------------
When you remove a user, the user and subuser are removed from the system.
However, you may remove just the subuser if you wish. To remove a user (and
subuser), specify ``user rm`` and the user ID. ::
radosgw-admin user rm --uid=johndoe
To remove the subuser only, specify ``subuser rm`` and the subuser ID. ::
radosgw-admin subuser rm --uid=johndoe:swift
Options include:
- **Purge Data:** The ``--purge-data`` option purges all data associated
to the UID.
- **Purge Keys:** The ``--purge-keys`` option purges all keys associated
to the UID.
Remove a Subuser
----------------
When you remove a sub user, you are removing access to the Swift interface.
The user will remain in the system. The Ceph Object Gateway To remove the subuser, specify
``subuser rm`` and the subuser ID. ::
radosgw-admin subuser rm --uid=johndoe:swift
Options include:
- **Purge Keys:** The ``--purge-keys`` option purges all keys associated
to the UID.
Create a Key
------------
To create a key for a user, you must specify ``key create``. For a user, specify
the user ID and the ``s3`` key type. To create a key for subuser, you must
specify the subuser ID and the ``swift`` keytype. For example::
radosgw-admin key create --subuser=johndoe:swift --key-type=swift --gen-secret
.. code-block:: javascript
{ "user_id": "johndoe",
"rados_uid": 0,
"display_name": "John Doe",
"email": "john@example.com",
"suspended": 0,
"subusers": [
{ "id": "johndoe:swift",
"permissions": "full-control"}],
"keys": [
{ "user": "johndoe",
"access_key": "QFAMEDSJP5DEKJO0DDXY",
"secret_key": "iaSFLDVvDdQt6lkNzHyW4fPLZugBAI1g17LO0+87"}],
"swift_keys": [
{ "user": "johndoe:swift",
"secret_key": "E9T2rUZNu2gxUjcwUBO8n\/Ev4KX6\/GprEuH4qhu1"}]}
Add / Remove Access Keys
------------------------
Users and subusers must have access keys to use the S3 and Swift
interfaces. When you create a user or subuser and you do not specify
an access key and secret, the key and secret get generated automatically.
You may create a key and either specify or generate the access key and/or
secret. You may also remove an access key and secret. Options include:
- ``--secret=<key>`` specifies a secret key (e.g,. manually generated).
- ``--gen-access-key`` generates random access key (for S3 user by default).
- ``--gen-secret`` generates a random secret key.
- ``--key-type=<type>`` specifies a key type. The options are: swift, s3
To add a key, specify the user. ::
radosgw-admin key create --uid=johndoe --key-type=s3 --gen-access-key --gen-secret
You may also specify a key and a secret.
To remove an access key, specify the user. ::
radosgw-admin key rm --uid=johndoe
Add / Remove Admin Capabilities
-------------------------------
The Ceph Storage Cluster provides an administrative API that enables users to
execute administrative functions via the REST API. By default, users do NOT have
access to this API. To enable a user to exercise administrative functionality,
provide the user with administrative capabilities.
To add administrative capabilities to a user, execute the following::
radosgw-admin caps add --uid={uid} --caps={caps}
You can add read, write or all capabilities to users, buckets, metadata and
usage (utilization). For example::
--caps="[users|buckets|metadata|usage|zone]=[*|read|write|read, write]"
For example::
radosgw-admin caps add --uid=johndoe --caps="users=*"
To remove administrative capabilities from a user, execute the following::
radosgw-admin caps remove --uid=johndoe --caps={caps}
Quota Management
================
The Ceph Object Gateway enables you to set quotas on users and buckets owned by
users. Quotas include the maximum number of objects in a bucket and the maximum
storage size in megabytes.
- **Bucket:** The ``--bucket`` option allows you to specify a quota for
buckets the user owns.
- **Maximum Objects:** The ``--max-objects`` setting allows you to specify
the maximum number of objects. A negative value disables this setting.
- **Maximum Size:** The ``--max-size`` option allows you to specify a quota
for the maximum number of bytes. A negative value disables this setting.
- **Quota Scope:** The ``--quota-scope`` option sets the scope for the quota.
The options are ``bucket`` and ``user``. Bucket quotas apply to buckets a
user owns. User quotas apply to a user.
Set User Quota
--------------
Before you enable a quota, you must first set the quota parameters.
For example::
radosgw-admin quota set --quota-scope=user --uid=<uid> [--max-objects=<num objects>] [--max-size=<max size>]
For example::
radosgw-admin quota set --quota-scope=user --uid=johndoe --max-objects=1024 --max-size=1024
A negative value for num objects and / or max size means that the
specific quota attribute check is disabled.
Enable/Disable User Quota
-------------------------
Once you set a user quota, you may enable it. For example::
radosgw-admin quota enable --quota-scope=user --uid=<uid>
You may disable an enabled user quota. For example::
radosgw-admin quota-disable --quota-scope=user --uid=<uid>
Set Bucket Quota
----------------
Bucket quotas apply to the buckets owned by the specified ``uid``. They are
independent of the user. ::
radosgw-admin quota set --uid=<uid> --quota-scope=bucket [--max-objects=<num objects>] [--max-size=<max size]
A negative value for num objects and / or max size means that the
specific quota attribute check is disabled.
Enable/Disable Bucket Quota
---------------------------
Once you set a bucket quota, you may enable it. For example::
radosgw-admin quota enable --quota-scope=bucket --uid=<uid>
You may disable an enabled bucket quota. For example::
radosgw-admin quota-disable --quota-scope=bucket --uid=<uid>
Get Quota Settings
------------------
You may access each user's quota settings via the user information
API. To read user quota setting information with the CLI interface,
execute the following::
radosgw-admin user info --uid=<uid>
Update Quota Stats
------------------
Quota stats get updated asynchronously. You can update quota
statistics for all users and all buckets manually to retrieve
the latest quota stats. ::
radosgw-admin user stats --uid=<uid> --sync-stats
Get User Usage Stats
--------------------
To see how much of the quota a user has consumed, execute the following::
radosgw-admin user stats --uid=<uid>
.. note:: You should execute ``radosgw-admin user stats`` with the
``--sync-stats`` option to receive the latest data.
Reading / Writing Global Quotas
-------------------------------
You can read and write quota settings in a region map. To get a
region map, execute the following. ::
radosgw-admin regionmap get > regionmap.json
To set quota settings for the entire region, simply modify the
quota settings in the region map. Then, use ``region set`` to
update the region map. ::
radosgw-admin region set < regionmap.json
.. note:: After updating the region map, you must restart the gateway.
Usage
=====
The Ceph Object Gateway logs usage for each user. You can track
user usage within date ranges too.
Options include:
- **Start Date:** The ``--start-date`` option allows you to filter usage
stats from a particular start date (**format:** ``yyyy-mm-dd[HH:MM:SS]``).
- **End Date:** The ``--end-date`` option allows you to filter usage up
to a particular date (**format:** ``yyyy-mm-dd[HH:MM:SS]``).
- **Log Entries:** The ``--show-log-entries`` option allows you to specify
whether or not to include log entries with the usage stats
(options: ``true`` | ``false``).
.. note:: You may specify time with minutes and seconds, but it is stored
with 1 hour resolution.
Show Usage
----------
To show usage statistics, specify the ``usage show``. To show usage for a
particular user, you must specify a user ID. You may also specify a start date,
end date, and whether or not to show log entries.::
radosgw-admin usage show --uid=johndoe --start-date=2012-03-01 --end-date=2012-04-01
You may also show a summary of usage information for all users by omitting a user ID. ::
radosgw-admin usage show --show-log-entries=false
Trim Usage
----------
With heavy use, usage logs can begin to take up storage space. You can trim
usage logs for all users and for specific users. You may also specify date
ranges for trim operations. ::
radosgw-admin usage trim --start-date=2010-01-01 --end-date=2010-12-31
radosgw-admin usage trim --uid=johndoe
radosgw-admin usage trim --uid=johndoe --end-date=2013-12-31
.. _radosgw-admin: ../../man/8/radosgw-admin/
.. _Pool Configuration: ../../rados/configuration/pool-pg-config-ref/
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