DNS-HA requires os-*-hostname to be set, but no bindings supported

[Jason Hobbs]

When deploying using DNS HA, openstack-dashboard fails with this error:

http://paste.ubuntu.com/26362264/

Here is our bundle:
http://paste.ubuntu.com/26362349/

With this overlay:
http://paste.ubuntu.com/26362416/

If I don't set any of the os-*-hostname config options, I get this error:

"DNS HA: At least one os-*-hostname(s) must be set to use DNS HA"

It looks like the openstack-dashboard doesn't support admin/public/internal bindings, and if so, I don't see how this could ever work.

This is with juju 2.3.1.

[Ante Karamatić (ivoks)]

My suggestion for this problem would be to add public binding and also os-public-network config option. I would also remove os-admin-* and os-internal-* since they have no use, but that might break some existing deployments?

[David Ames (thedac)]

I agree with Ante we should use a single hostname via os-public-hostname.

As a precaution, let's add deprecation messages to the config.yaml for os-admin-* and os-internal-* rather than removing them entirely.

Add to metadata.yaml:

extra-bindings:
  public:

Configuring DNSHA with os-public-hostname should then work.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/532915

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/532915
Committed: https://git.openstack.org/cgit/openstack/charm-openstack-dashboard/commit/?id=27e1e3be19772dfd4aa0d8636c61694b6f9cef4d
Submitter: Zuul
Branch: master

commit 27e1e3be19772dfd4aa0d8636c61694b6f9cef4d
Author: Jason Hobbs <email address hidden>
Date: Thu Jan 11 17:15:36 2018 +0000

    Add public binding to support DNS-HA.

    This binding is required so that the DNS-HA code can find the
    address to use for the hostname specified by os-public-hostname.

    This also deprecates the os-internal-hostname and os-admin-hostname
    options, as there is no binding to use them with.

    Change-Id: I57609c5ab641e2ae6377c6fbad5c9e7b8cf6495c
    Closes-Bug: #1742548