Bz1123301 nova metadata haproxy

[jguiditta]

Add listener to haproxy config

[cwolferh]

Re-enabling is causing the following issue with openstack-status for me. Not sure what the issue is yet.

[root@d1a1 ~(openstack_admin)]# openstack-status
== Nova services ==
openstack-nova-api:                     failed
openstack-nova-cert:                    inactive
openstack-nova-compute:                 inactive  (disabled on boot)
openstack-nova-network:                 inactive  (disabled on boot)
openstack-nova-scheduler:               inactive
openstack-nova-volume:                  inactive  (disabled on boot)
openstack-nova-conductor:               inactive
...
== Nova managed services ==
ERROR: HTTPConnectionPool(host='192.168.201.66', port=8774): Max retries exceeded with url: /v2/5d8d4790b5dd4360827cf18713b26b21/os-services
== Nova networks ==
ERROR: HTTPConnectionPool(host='192.168.201.66', port=8774): Max retries exceeded with url: /v2/5d8d4790b5dd4360827cf18713b26b21/os-networks
== Nova instance flavors ==
ERROR: HTTPConnectionPool(host='192.168.201.66', port=8774): Max retries exceeded with url: /v2/5d8d4790b5dd4360827cf18713b26b21/flavors/detail
== Nova instances ==
ERROR: HTTPConnectionPool(host='192.168.201.66', port=8774): Max retries exceeded with url: /v2/5d8d4790b5dd4360827cf18713b26b21/servers/detail

[cwolferh]

Further debugging:

# From nova-api.log:
014-08-05 16:03:41.894 28810 INFO nova.osapi_compute.wsgi.server [-] (28810) wsgi starting up on http://192.168.200.110:8774/
2014-08-05 16:03:41.896 28811 INFO nova.osapi_compute.wsgi.server [-] (28811) wsgi starting up on http://192.168.200.110:8774/
2014-08-05 16:03:42.005 28781 ERROR nova.wsgi [-] Could not bind to 0.0.0.0:8775
2014-08-05 16:03:42.006 28781 CRITICAL nova [-] error: [Errno 98] Address already in use

It looks like metadata_host in /etc/nova/nova.conf needs to be defined to avoid this error (i.e. bind on just the backend_ip instead of 0.0.0.0).

[cwolferh]

@jguiditta , I was able to get this PR to work with the addition of this commit: cwolferh@73a342a (the branch it is coming from is https://github.com/cwolferh/astapor/commits/bz1123301_nova-metadata-haproxy_testing) -- so maybe just cherry-pick that commit onto your branch. Note that I called out the wrong config value in my last comment; it is actually metadata_listen, not metadata_host.

Tested on nova network and neutron HA controllers, and non-HA nova network controller.

[jguiditta]

@cwolferh pulled in your commit, not sure who should merge it now though...

[cwolferh]

Merging with blessing from morazi.