Launch instance with a new server group via horizon is failed

[Yvonne Ding]

Brief Description
-----------------
Launch instance with a new server group via horizon is failed.

Severity
--------
Major

Steps to Reproduce
------------------
1. Login as Tenant
2. Go to Project > Compute > Server Groups page
3. Create a new server group
4. Verify the group appears in server groups table
5. Launch instance with the new server group

TC-name:

Expected Behavior
-----------------
Launch instance with the new server group successfully

Actual Behavior
----------------
Launch instance with the new server group failed

Reproducibility
---------------
reproducible

System Configuration
--------------------
Regular standard 2+2

Lab-name:
wcp-7-10

Branch/Pull Time/Commit
-----------------------
BUILD_ID="20200709T013419Z"

Timestamp/Logs
--------------
[2020-07-10 15:53:11,223] 61 DEBUG MainThread conftest.update_results:: ***Failure at test call: /home/svc-cgcsauto/wassp-repos.new/testcases/cgcs/CGCSAuto/utils/horizon/pages/project/compute/instancespage.py:77: AttributeError: 'NoneType' object has no attribute 'add'
***Details: server_groups_pg = <utils.horizon.pages.project.compute.servergroupspage.ServerGroupsPage object at 0x7f7de8bcb518>
policy = 'anti-affinity'

......
        instances_pg.create_instance(instance_name,
                                     source_name=guest_img,
                                     flavor_name=flavor_name,
                                     network_names=[mgmt_net_name],
> server_group_name=group_name)

testcases/functional/horizon/test_servergroups.py:85:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
utils/horizon/pages/project/compute/instancespage.py:255: in create_instance
    instance_form.addservergrp('Name', server_group_name)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <utils.horizon.pages.project.compute.instancespage.LaunchInstanceForm object at 0x7f7de8ddb518>
column_name = 'Name', name = 'test_groups_10-07-11-52-36'

    def addservergrp(self, column_name, name):
> self.server_grp_available_table.get_row(column_name, name).add()
E AttributeError: 'NoneType' object has no attribute 'add'

logs of .tar and video
https://files.starlingx.kube.cengn.ca/launchpad/1887589

Test Activity
-------------
stx.4.0 regression

[Ghada Khalil (gkhalil)]

stx.4.0 / medium - looks to be an openstack regression. Marking as stx.4.0 gating until the openstack team has a read-out

[Lin Shuicheng (shuicheng)]

The same log url with LP1887589 "Create new instance failed via horizon"
https://bugs.launchpad.net/starlingx/+bug/1887589

Hi Yvonne,
I cannot reproduce the issue in my 2+2 system.
Here is the server group I created:

 Name ID Policy
 test 2f064608-fc88-4e47-9d32-730eea1484fb Anti Affinity
Here is the instance I created with the server group:
 Instance Name Image Name IP Address Flavor Key Pair Status Availability Zone Task Power State Age
Actions
 test_servergroup cirros 192.168.101.177 m1.tinny - Active nova None Running 2 minutes

Could you help double confirm the issue with latest build?
Or anything I missed to reproduce the issue? Thanks.

[Lin Shuicheng (shuicheng)]

Mark as duplicate since both issue share the same log in the same machine.