이 콘텐츠는 선택한 언어로 제공되지 않습니다.
Chapter 14. Configure RBAC
Role-based Access Control (RBAC) policies in OpenStack Networking allows granular control over shared neutron networks. Previously, networks were shared either with all tenants, or not at all. OpenStack Networking now uses a RBAC table to control sharing of neutron networks among tenants, allowing an administrator to control which tenants are granted permission to attach instances to a network.
As a result, cloud administrators can remove the ability for some tenants to create networks and can instead allow them to attach to pre-existing networks that correspond to their project.
14.1. Create a new RBAC policy
This example procedure demonstrates how to use a RBAC policy to grant a tenant access to a shared network.
View the list of available networks:
# neutron net-list +--------------------------------------+-------------+-------------------------------------------------------+ | id | name | subnets | +--------------------------------------+-------------+-------------------------------------------------------+ | fa9bb72f-b81a-4572-9c7f-7237e5fcabd3 | web-servers | 20512ffe-ad56-4bb4-b064-2cb18fecc923 192.168.200.0/24 | | bcc16b34-e33e-445b-9fde-dd491817a48a | private | 7fe4a05a-4b81-4a59-8c47-82c965b0e050 10.0.0.0/24 | | 9b2f4feb-fee8-43da-bb99-032e4aaf3f85 | public | 2318dc3b-cff0-43fc-9489-7d4cf48aaab9 172.24.4.224/28 | +--------------------------------------+-------------+-------------------------------------------------------+
View the list of tenants:
# openstack project list +----------------------------------+----------+ | ID | Name | +----------------------------------+----------+ | 4b0b98f8c6c040f38ba4f7146e8680f5 | auditors | | 519e6344f82e4c079c8e2eabb690023b | services | | 80bf5732752a41128e612fe615c886c6 | demo | | 98a2f53c20ce4d50a40dac4a38016c69 | admin | +----------------------------------+----------+
Create a RBAC entry for the
web-serversnetwork that grants access to the auditors tenant (4b0b98f8c6c040f38ba4f7146e8680f5):# neutron rbac-create fa9bb72f-b81a-4572-9c7f-7237e5fcabd3 --type network --target-tenant 4b0b98f8c6c040f38ba4f7146e8680f5 --action access_as_shared Created a new rbac_policy: +---------------+--------------------------------------+ | Field | Value | +---------------+--------------------------------------+ | action | access_as_shared | | id | 314004d0-2261-4d5e-bda7-0181fcf40709 | | object_id | fa9bb72f-b81a-4572-9c7f-7237e5fcabd3 | | object_type | network | | target_tenant | 4b0b98f8c6c040f38ba4f7146e8680f5 | | tenant_id | 98a2f53c20ce4d50a40dac4a38016c69 | +---------------+--------------------------------------+
As a result, users in the auditors project are able to connect instances to the web-servers network.
14.2. Review your configured RBAC policies
Use
neutron rbac-listto retrieve the ID of your existing RBAC policies:# neutron rbac-list +--------------------------------------+-------------+--------------------------------------+ | id | object_type | object_id | +--------------------------------------+-------------+--------------------------------------+ | 314004d0-2261-4d5e-bda7-0181fcf40709 | network | fa9bb72f-b81a-4572-9c7f-7237e5fcabd3 | | bbab1cf9-edc5-47f9-aee3-a413bd582c0a | network | 9b2f4feb-fee8-43da-bb99-032e4aaf3f85 | +--------------------------------------+-------------+--------------------------------------+
Use
neutron rbac-showto view the details of a specific RBAC entry:# neutron rbac-show 314004d0-2261-4d5e-bda7-0181fcf40709 +---------------+--------------------------------------+ | Field | Value | +---------------+--------------------------------------+ | action | access_as_shared | | id | 314004d0-2261-4d5e-bda7-0181fcf40709 | | object_id | fa9bb72f-b81a-4572-9c7f-7237e5fcabd3 | | object_type | network | | target_tenant | 4b0b98f8c6c040f38ba4f7146e8680f5 | | tenant_id | 98a2f53c20ce4d50a40dac4a38016c69 | +---------------+--------------------------------------+
14.3. Delete a RBAC policy
Use
neutron rbac-listto retrieve the ID of your existing RBACs:# neutron rbac-list +--------------------------------------+-------------+--------------------------------------+ | id | object_type | object_id | +--------------------------------------+-------------+--------------------------------------+ | 314004d0-2261-4d5e-bda7-0181fcf40709 | network | fa9bb72f-b81a-4572-9c7f-7237e5fcabd3 | | bbab1cf9-edc5-47f9-aee3-a413bd582c0a | network | 9b2f4feb-fee8-43da-bb99-032e4aaf3f85 | +--------------------------------------+-------------+--------------------------------------+
Use
neutron rbac-deleteto delete the RBAC, using its ID value:# neutron rbac-delete 314004d0-2261-4d5e-bda7-0181fcf40709 Deleted rbac_policy: 314004d0-2261-4d5e-bda7-0181fcf40709
14.4. RBAC for external networks
You can grant RBAC access to external networks (networks with gateway interfaces attached) using the --action access_as_external parameter
For example, this procedure creates a RBAC for the web-servers network and grants access to the engineering tenant (c717f263785d4679b16a122516247deb):
1. Create a new RBAC policy using --action access_as_external:
# neutron rbac-create 6e437ff0-d20f-4483-b627-c3749399bdca --type network --target-tenant c717f263785d4679b16a122516247deb --action access_as_external Created a new rbac_policy: +---------------+--------------------------------------+ | Field | Value | +---------------+--------------------------------------+ | action | access_as_external | | id | ddef112a-c092-4ac1-8914-c714a3d3ba08 | | object_id | 6e437ff0-d20f-4483-b627-c3749399bdca | | object_type | network | | target_tenant | c717f263785d4679b16a122516247deb | | tenant_id | c717f263785d4679b16a122516247deb | +---------------+--------------------------------------+
2. As a result, users in the Engineering tenant are able to view the network or connect instances to it:
$ neutron net-list +--------------------------------------+-------------+------------------------------------------------------+ | id | name | subnets | +--------------------------------------+-------------+------------------------------------------------------+ | 6e437ff0-d20f-4483-b627-c3749399bdca | web-servers | fa273245-1eff-4830-b40c-57eaeac9b904 192.168.10.0/24 | +--------------------------------------+-------------+------------------------------------------------------+
