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Merge "[Docs] Add info about how to use shared SG with VMs"

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Zuul 2021-09-17 16:35:06 +00:00 committed by Gerrit Code Review
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commit 79445f12be
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doc/source/admin/config-rbac.rst
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@ -284,6 +284,26 @@ This process can be repeated any number of times to share a security-group
with an arbitrary number of projects.
Creating an instance which uses a security group shared through RBAC, but only
specifying the network ID when calling Nova will not work currently. In such
cases Nova will check if the given security group exists in Neutron before it
creates a port in the given network. The problem with that is that Nova asks
only for the security groups filtered by the project_id thus it will not get
the shared security group back from the Neutron API. See `bug 1942615
<https://bugs.launchpad.net/neutron/+bug/1942615>`__ for details.
To workaround the issue, the user needs to create a port in Neutron first, and
then pass that port to Nova:
.. code-block:: console
$ openstack port create --network net1 --security-group
5ba835b7-22b0-4be6-bdbe-e0722d1b5f24 shared-sg-port
$ openstack server create --image cirros-0.5.1-x86_64-disk --flavor m1.tiny
--port shared-sg-port vm-with-shared-sg
Sharing an address scope with specific projects
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~