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https://github.com/ceph/ceph
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413 lines
12 KiB
ReStructuredText
413 lines
12 KiB
ReStructuredText
======
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Role
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======
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A role is similar to a user and has permission policies attached to it, that determine what a role can or can not do. A role can be assumed by any identity that needs it. If a user assumes a role, a set of dynamically created temporary credentials are returned to the user. A role can be used to delegate access to users, applications, services that do not have permissions to access some s3 resources.
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The following radosgw-admin commands can be used to create/ delete/ update a role and permissions associated with a role.
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Create a Role
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-------------
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To create a role, execute the following::
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radosgw-admin role create --role-name={role-name} [--path=="{path to the role}"] [--assume-role-policy-doc={trust-policy-document}]
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``role-name``
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:Description: Name of the role.
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:Type: String
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``path``
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:Description: Path to the role. The default value is a slash(/).
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:Type: String
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``assume-role-policy-doc``
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:Description: The trust relationship policy document that grants an entity permission to assume the role.
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:Type: String
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For example::
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radosgw-admin role create --role-name=S3Access1 --path=/application_abc/component_xyz/ --assume-role-policy-doc=\{\"Version\":\"2012-10-17\",\"Statement\":\[\{\"Effect\":\"Allow\",\"Principal\":\{\"AWS\":\[\"arn:aws:iam:::user/TESTER\"\]\},\"Action\":\[\"sts:AssumeRole\"\]\}\]\}
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.. code-block:: javascript
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{
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"id": "ca43045c-082c-491a-8af1-2eebca13deec",
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"name": "S3Access1",
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"path": "/application_abc/component_xyz/",
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"arn": "arn:aws:iam:::role/application_abc/component_xyz/S3Access1",
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"create_date": "2018-10-17T10:18:29.116Z",
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"max_session_duration": 3600,
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"assume_role_policy_document": "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam:::user/TESTER\"]},\"Action\":[\"sts:AssumeRole\"]}]}"
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}
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Delete a Role
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-------------
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To delete a role, execute the following::
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radosgw-admin role rm --role-name={role-name}
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``role-name``
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:Description: Name of the role.
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:Type: String
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For example::
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radosgw-admin role rm --role-name=S3Access1
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Note: A role can be deleted only when it doesn't have any permission policy attached to it.
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Get a Role
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----------
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To get information about a role, execute the following::
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radosgw-admin role get --role-name={role-name}
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``role-name``
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:Description: Name of the role.
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:Type: String
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For example::
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radosgw-admin role get --role-name=S3Access1
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.. code-block:: javascript
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{
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"id": "ca43045c-082c-491a-8af1-2eebca13deec",
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"name": "S3Access1",
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"path": "/application_abc/component_xyz/",
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"arn": "arn:aws:iam:::role/application_abc/component_xyz/S3Access1",
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"create_date": "2018-10-17T10:18:29.116Z",
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"max_session_duration": 3600,
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"assume_role_policy_document": "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam:::user/TESTER\"]},\"Action\":[\"sts:AssumeRole\"]}]}"
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}
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List Roles
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----------
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To list roles with a specified path prefix, execute the following::
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radosgw-admin role list [--path-prefix ={path prefix}]
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``path-prefix``
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:Description: Path prefix for filtering roles. If this is not specified, all roles are listed.
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:Type: String
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For example::
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radosgw-admin role list --path-prefix="/application"
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.. code-block:: javascript
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[
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{
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"id": "3e1c0ff7-8f2b-456c-8fdf-20f428ba6a7f",
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"name": "S3Access1",
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"path": "/application_abc/component_xyz/",
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"arn": "arn:aws:iam:::role/application_abc/component_xyz/S3Access1",
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"create_date": "2018-10-17T10:32:01.881Z",
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"max_session_duration": 3600,
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"assume_role_policy_document": "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam:::user/TESTER\"]},\"Action\":[\"sts:AssumeRole\"]}]}"
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}
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]
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Update Assume Role Policy Document of a role
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--------------------------------------------
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To modify a role's assume role policy document, execute the following::
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radosgw-admin role modify --role-name={role-name} --assume-role-policy-doc={trust-policy-document}
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``role-name``
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:Description: Name of the role.
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:Type: String
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``assume-role-policy-doc``
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:Description: The trust relationship policy document that grants an entity permission to assume the role.
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:Type: String
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For example::
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radosgw-admin role modify --role-name=S3Access1 --assume-role-policy-doc=\{\"Version\":\"2012-10-17\",\"Statement\":\[\{\"Effect\":\"Allow\",\"Principal\":\{\"AWS\":\[\"arn:aws:iam:::user/TESTER2\"\]\},\"Action\":\[\"sts:AssumeRole\"\]\}\]\}
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.. code-block:: javascript
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{
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"id": "ca43045c-082c-491a-8af1-2eebca13deec",
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"name": "S3Access1",
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"path": "/application_abc/component_xyz/",
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"arn": "arn:aws:iam:::role/application_abc/component_xyz/S3Access1",
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"create_date": "2018-10-17T10:18:29.116Z",
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"max_session_duration": 3600,
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"assume_role_policy_document": "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"arn:aws:iam:::user/TESTER2\"]},\"Action\":[\"sts:AssumeRole\"]}]}"
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}
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In the above example, we are modifying the Principal from TESTER to TESTER2 in its assume role policy document.
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Add/ Update a Policy attached to a Role
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---------------------------------------
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To add or update the inline policy attached to a role, execute the following::
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radosgw-admin role policy put --role-name={role-name} --policy-name={policy-name} --policy-doc={permission-policy-doc}
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``role-name``
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:Description: Name of the role.
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:Type: String
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``policy-name``
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:Description: Name of the policy.
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:Type: String
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``policy-doc``
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:Description: The Permission policy document.
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:Type: String
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For example::
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radosgw-admin role-policy put --role-name=S3Access1 --policy-name=Policy1 --policy-doc=\{\"Version\":\"2012-10-17\",\"Statement\":\[\{\"Effect\":\"Allow\",\"Action\":\[\"s3:*\"\],\"Resource\":\"arn:aws:s3:::example_bucket\"\}\]\}
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In the above example, we are attaching a policy 'Policy1' to role 'S3Access1', which allows all s3 actions on 'example_bucket'.
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List Permission Policy Names attached to a Role
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-----------------------------------------------
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To list the names of permission policies attached to a role, execute the following::
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radosgw-admin role policy get --role-name={role-name}
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``role-name``
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:Description: Name of the role.
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:Type: String
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For example::
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radosgw-admin role-policy list --role-name=S3Access1
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.. code-block:: javascript
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[
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"Policy1"
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]
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Get Permission Policy attached to a Role
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----------------------------------------
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To get a specific permission policy attached to a role, execute the following::
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radosgw-admin role policy get --role-name={role-name} --policy-name={policy-name}
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``role-name``
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:Description: Name of the role.
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:Type: String
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``policy-name``
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:Description: Name of the policy.
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:Type: String
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For example::
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radosgw-admin role-policy get --role-name=S3Access1 --policy-name=Policy1
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.. code-block:: javascript
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{
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"Permission policy": "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Action\":[\"s3:*\"],\"Resource\":\"arn:aws:s3:::example_bucket\"}]}"
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}
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Delete Policy attached to a Role
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--------------------------------
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To delete permission policy attached to a role, execute the following::
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radosgw-admin role policy rm --role-name={role-name} --policy-name={policy-name}
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Request Parameters
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~~~~~~~~~~~~~~~~~~
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``role-name``
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:Description: Name of the role.
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:Type: String
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``policy-name``
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:Description: Name of the policy.
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:Type: String
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For example::
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radosgw-admin role-policy get --role-name=S3Access1 --policy-name=Policy1
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REST APIs for Manipulating a Role
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=================================
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In addition to the above radosgw-admin commands, the following REST APIs can be used for manipulating a role. For the request parameters and their explanations, refer to the sections above.
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In order to invoke the REST admin APIs, a user with admin caps needs to be created.
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.. code-block:: javascript
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radosgw-admin --uid TESTER --display-name "TestUser" --access_key TESTER --secret test123 user create
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radosgw-admin caps add --uid="TESTER" --caps="roles=*"
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Create a Role
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-------------
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Example::
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POST "<hostname>?Action=CreateRole&RoleName=S3Access&Path=/application_abc/component_xyz/&AssumeRolePolicyDocument=\{\"Version\":\"2012-10-17\",\"Statement\":\[\{\"Effect\":\"Allow\",\"Principal\":\{\"AWS\":\[\"arn:aws:iam:::user/TESTER\"\]\},\"Action\":\[\"sts:AssumeRole\"\]\}\]\}"
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.. code-block:: XML
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<role>
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<id>8f41f4e0-7094-4dc0-ac20-074a881ccbc5</id>
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<name>S3Access</name>
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<path>/application_abc/component_xyz/</path>
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<arn>arn:aws:iam:::role/application_abc/component_xyz/S3Access</arn>
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<create_date>2018-10-23T07:43:42.811Z</create_date>
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<max_session_duration>3600</max_session_duration>
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<assume_role_policy_document>{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":{"AWS":["arn:aws:iam:::user/TESTER"]},"Action":["sts:AssumeRole"]}]}</assume_role_policy_document>
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</role>
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Delete a Role
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-------------
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Example::
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POST "<hostname>?Action=DeleteRole&RoleName=S3Access"
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Note: A role can be deleted only when it doesn't have any permission policy attached to it.
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Get a Role
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----------
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Example::
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POST "<hostname>?Action=GetRole&RoleName=S3Access"
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.. code-block:: XML
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<role>
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<id>8f41f4e0-7094-4dc0-ac20-074a881ccbc5</id>
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<name>S3Access</name>
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<path>/application_abc/component_xyz/</path>
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<arn>arn:aws:iam:::role/application_abc/component_xyz/S3Access</arn>
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<create_date>2018-10-23T07:43:42.811Z</create_date>
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<max_session_duration>3600</max_session_duration>
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<assume_role_policy_document>{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":{"AWS":["arn:aws:iam:::user/TESTER"]},"Action":["sts:AssumeRole"]}]}</assume_role_policy_document>
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</role>
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List Roles
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----------
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Example::
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POST "<hostname>?Action=ListRoles&RoleName=S3Access&PathPrefix=/application"
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.. code-block:: XML
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<role>
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<id>8f41f4e0-7094-4dc0-ac20-074a881ccbc5</id>
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<name>S3Access</name>
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<path>/application_abc/component_xyz/</path>
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<arn>arn:aws:iam:::role/application_abc/component_xyz/S3Access</arn>
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<create_date>2018-10-23T07:43:42.811Z</create_date>
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<max_session_duration>3600</max_session_duration>
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<assume_role_policy_document>{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":{"AWS":["arn:aws:iam:::user/TESTER"]},"Action":["sts:AssumeRole"]}]}</assume_role_policy_document>
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</role>
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Update Assume Role Policy Document
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----------------------------------
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Example::
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POST "<hostname>?Action=UpdateAssumeRolePolicy&RoleName=S3Access&PolicyDocument=\{\"Version\":\"2012-10-17\",\"Statement\":\[\{\"Effect\":\"Allow\",\"Principal\":\{\"AWS\":\[\"arn:aws:iam:::user/TESTER2\"\]\},\"Action\":\[\"sts:AssumeRole\"\]\}\]\}"
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Add/ Update a Policy attached to a Role
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---------------------------------------
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Example::
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POST "<hostname>?Action=PutRolePolicy&RoleName=S3Access&PolicyName=Policy1&PolicyDocument=\{\"Version\":\"2012-10-17\",\"Statement\":\[\{\"Effect\":\"Allow\",\"Action\":\[\"s3:CreateBucket\"\],\"Resource\":\"arn:aws:s3:::example_bucket\"\}\]\}"
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List Permission Policy Names attached to a Role
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-----------------------------------------------
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Example::
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POST "<hostname>?Action=ListRolePolicies&RoleName=S3Access"
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.. code-block:: XML
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<PolicyNames>
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<member>Policy1</member>
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</PolicyNames>
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Get Permission Policy attached to a Role
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----------------------------------------
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Example::
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POST "<hostname>?Action=GetRolePolicy&RoleName=S3Access&PolicyName=Policy1"
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.. code-block:: XML
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<GetRolePolicyResult>
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<PolicyName>Policy1</PolicyName>
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<RoleName>S3Access</RoleName>
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<Permission_policy>{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:CreateBucket"],"Resource":"arn:aws:s3:::example_bucket"}]}</Permission_policy>
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</GetRolePolicyResult>
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Delete Policy attached to a Role
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--------------------------------
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Example::
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POST "<hostname>?Action=DeleteRolePolicy&RoleName=S3Access&PolicyName=Policy1"
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