On 06/26/2017 12:58 PM, Jose Renato Santos wrote:
Hi
I am accessing the nova api using the gophercloud SDK
https://github.com/rackspace/gophercloud
I am running Openstack Newton installed with Openstack Ansible
I am accessing the “List Servers” call of the nova Api with the
Changes-Since parameters for efficient polling
https://developer.openstack.org/api-guide/compute/polling_changes-since_parameter.html
However, the API is not working as I expected.
When I stop or start a server instance, the API successfully detects the
change in the server state and returns the server in the next call to
ListServers with the Changes-Since parameter, as expected.
But when I attach a new security group to the server, the API does not
detect any change in the state of the server and does not return the
server in the next call to ListServers with the Changes-Since parameter.
I would expect that changing the list of security groups attached to a
server would be considered a change in the server state and reported
when using the Changes-Since parameter, but that is not the behavior
that I am seeing.
Can someone please let me know if this is a known bug?
Changes to an instance's security group rules are not considered when
listing servers by updated_at field value. This is mostly because the
security group [rules] are Neutron objects and are not one-to-one
associated with a Nova instance.
I'm not sure it's a bug per-se, but I suppose we could entertain a
feature request to set the updated_at timestamp column for all instances
associated with a security group when that security group's rules are
changed.
But that would probably open up a can of worms that Nova developers may
not be willing to deal with. For instance, should we update the
instances.update_at table every time a volume is changed? a network port
that an instance is associated with? A heat stack that launched the
volume? etc etc.
Best,
-jay
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