unable to retrieve the ports

[hyunsik Yang]

Pike Master release,

When you click the compute --> Instance and try to Launch Instance, you can see the error message on the dashboard.

Error: Unable to retrieve the ports

https://review.openstack.org/#/c/504916/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/504916

[hyunsik Yang (yangun)]

Fix proposed to branch : master
review : https://review.openstack.org/#/c/504916/

[hongbin (hongbin034)]

Note: This bug affects zun-ui as well.

[Gary W. Smith (gary-w-smith)]

Although this appears to be a benign error, marking as medium since it is in such a highly used portion of the UI.

[Akihiro Motoki (amotoki)]

I cannot reproduce this even after creating a port which can be attached to a new instance. I tried to reproduce this both with stable/pike branch and master branch (queens). Could you provide a way to reproduce this?

[hyunsik Yang (yangun)]

When you click the launch instance button in the compute, you can see that error.

Before pushing the button, you should make a network first.

please check it again.

[Akihiro Motoki (amotoki)]

I investigate the detail conditions to reproduce this more. What I see are:

- This bug always occurs when 'trunk' neutron extension is not enabled.
- This occurs only for the master branch (queens). This never happens for Pike. (so the original bug report "pike master" is incorrect)

As a fix, we should check the availability of 'trunk' extension and if it is not available we should fall-back into the previous behavior (without trunk port and subport handling). At least the attached patch in #1 is not the correct approach.

[Akihiro Motoki (amotoki)]

This means we cannot launch an instance when 'trunk' extension is not enabled in neutron, so I raises the priority to Critical.

[Akihiro Motoki (amotoki)]

Changing the priority back to Medium as using 'neutron ports' is not a popular feature.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/504916
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=61ad9f69bde5180af195a254038ca8280a0ffbb9
Submitter: Jenkins
Branch: master

commit 61ad9f69bde5180af195a254038ca8280a0ffbb9
Author: Akihiro Motoki <email address hidden>
Date: Tue Sep 19 18:01:52 2017 +0000

    Fix a bug to unable to retrieve ports when no trunk ext

    When neutron trunk extension is not enabled, we cannot retrieve
    network ports for a new instance. The current version of
    port_list_with_trunk_types assumes the trunk extension is always
    available, so if it is not enabled we cannot retrieve network ports.
    This commit changes the logic to check whether the trunk extension
    is enabled and if not it does not retrieve trunk information.

    Change-Id: I2aa476790820f9512fe4728e0a806bd543021b0b
    Closes-Bug: #1717893

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/horizon 13.0.0.0b1 development milestone.