Introduce kolla_address filter.
Introduce put_address_in_context filter.

Add AF config to vars.

Address contexts:
- raw (default): <ADDR>
- memcache: inet6:[<ADDR>]
- url: [<ADDR>]

Other changes:

globals.yml - mention just IP in comment

prechecks/port_checks (api_intf) - kolla_address handles validation

3x interface conditional (swift configs: replication/storage)

2x interface variable definition with hostname
(haproxy listens; api intf)

1x interface variable definition with hostname with bifrost exclusion
(baremetal pre-install /etc/hosts; api intf)

neutron's ml2 'overlay_ip_version' set to 6 for IPv6 on tunnel network

basic multinode source CI job for IPv6

prechecks for rabbitmq and qdrouterd use proper NSS database now

MariaDB Galera Cluster WSREP SST mariabackup workaround
(socat and IPv6)

Ceph naming workaround in CI
TODO: probably needs documenting

RabbitMQ IPv6-only proto_dist

Ceph ms switch to IPv6 mode

Remove neutron-server ml2_type_vxlan/vxlan_group setting
as it is not used (let's avoid any confusion)
and could break setups without proper multicast routing
if it started working (also IPv4-only)

haproxy upgrade checks for slaves based on ipv6 addresses

TODO:

ovs-dpdk grabs ipv4 network address (w/ prefix len / submask)
not supported, invalid by default because neutron_external has no address
No idea whether ovs-dpdk works at all atm.

ml2 for xenapi
Xen is not supported too well.
This would require working with XenAPI facts.

rp_filter setting
This would require meddling with ip6tables (there is no sysctl param).
By default nothing is dropped.
Unlikely we really need it.

ironic dnsmasq is configured IPv4-only
dnsmasq needs DHCPv6 options and testing in vivo.

KNOWN ISSUES (beyond us):

One cannot use IPv6 address to reference the image for docker like we
currently do, see: https://github.com/moby/moby/issues/39033
(docker_registry; docker API 400 - invalid reference format)
workaround: use hostname/FQDN

RabbitMQ may fail to bind to IPv6 if hostname resolves also to IPv4.
This is due to old RabbitMQ versions available in images.
IPv4 is preferred by default and may fail in the IPv6-only scenario.
This should be no problem in real life as IPv6-only is indeed IPv6-only.
Also, when new RabbitMQ (3.7.16/3.8+) makes it into images, this will
no longer be relevant as we supply all the necessary config.
See: https://github.com/rabbitmq/rabbitmq-server/pull/1982

For reliable runs, at least Ansible 2.8 is required (2.8.5 confirmed
to work well). Older Ansible versions are known to miss IPv6 addresses
in interface facts. This may affect redeploys, reconfigures and
upgrades which run after VIP address is assigned.
See: https://github.com/ansible/ansible/issues/63227

Bifrost Train does not support IPv6 deployments.
See: https://storyboard.openstack.org/#!/story/2006689



Change-Id: Ia34e6916ea4f99e9522cd2ddde03a0a4776f7e2c
Implements: blueprint ipv6-control-plane
Signed-off-by: Radosław Piliszek <radoslaw.piliszek@gmail.com>

Use upstream Ansible modules for registration of services, endpoints,
users, projects, roles, and role grants.

Change-Id: I7c9138d422cc91c177fd8992347176bb54156b5a

After all of the discussions we had on
"https://review.opendev.org/#/c/670626/2", I studied all projects that
have an "oslo_messaging" section. Afterwards, I applied the same method
that is already used in "oslo_messaging" section in Nova, Cinder, and
others. This guarantees that we have a consistent method to
enable/disable notifications across projects based on components (e.g.
Ceilometer) being enabled or disabled. Here follows the list of
components, and the respective changes I did.

* Aodh:
The section is declared, but it is not used. Therefore, it will
be removed in an upcomming PR.

* Congress:
The section is declared, but it is not used. Therefore, it will
be removed in an upcomming PR.

* Cinder:
It was already properly configured.

* Octavia:
The section is declared, but it is not used. Therefore, it will
be removed in an upcomming PR.

* Heat:
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Ceilometer:
Ceilometer publishes some messages in the rabbitMQ. However, the
default driver is "messagingv2", and not ''(empty) as defined in Oslo;
these configurations are defined in ceilometer/publisher/messaging.py.
Therefore, we do not need to do anything for the
"oslo_messaging_notifications" section in Ceilometer

* Tacker:
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Neutron:
It was already properly configured.

* Nova
It was already properly configured. However, we found another issue
with its configuration. Kolla-ansible does not configure nova
notifications as it should. If 'searchlight' is not installed (enabled)
the 'notification_format' should be 'unversioned'. The default is
'both'; so nova will send a notification to the queue
versioned_notifications; but that queue has no consumer when
'searchlight' is disabled. In our case, the queue got 511k messages.
The huge amount of "stuck" messages made the Rabbitmq cluster
unstable.

https://bugzilla.redhat.com/show_bug.cgi?id=1478274
https://bugs.launchpad.net/ceilometer/+bug/1665449

* Nova_hyperv:
I added the same configurations as in Nova project.

* Vitrage
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Searchlight
I created a mechanism similar to what we have in AODH, Cinder, Nova,
and others.

* Ironic
I created a mechanism similar to what we have in AODH, Cinder, Nova,
and others.

* Glance
It was already properly configured.

* Trove
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Blazar
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Sahara
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Watcher
I created a mechanism similar to what we have in AODH, Cinder, Nova,
and others.

* Barbican
I created a mechanism similar to what we have in Cinder, Nova,
and others. I also added a configuration to 'keystone_notifications'
section. Barbican needs its own queue to capture events from Keystone.
Otherwise, it has an impact on Ceilometer and other systems that are
connected to the "notifications" default queue.

* Keystone
Keystone is the system that triggered this work with the discussions
that followed on https://review.opendev.org/#/c/670626/2

. After a long
discussion, we agreed to apply the same approach that we have in Nova,
Cinder and other systems in Keystone. That is what we did. Moreover, we
introduce a new topic "barbican_notifications" when barbican is
enabled. We also removed the "variable" enable_cadf_notifications, as
it is obsolete, and the default in Keystone is CADF.

* Mistral:
It was hardcoded "noop" as the driver. However, that does not seem a
good practice. Instead, I applied the same standard of using the driver
and pushing to "notifications" queue if Ceilometer is enabled.

* Cyborg:
I created a mechanism similar to what we have in AODH, Cinder, Nova,
and others.

* Murano
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Senlin
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Manila
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Zun
The section is declared, but it is not used. Therefore, it will
be removed in an upcomming PR.

* Designate
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

* Magnum
It was already using a similar scheme; I just modified it a little bit
to be the same as we have in all other components

Closes-Bug: #1838985

Change-Id: I88bdb004814f37c81c9a9c4e5e491fac69f6f202
Signed-off-by: Rafael Weingärtner <rafael@apache.org>

When integrating 3rd party component into openstack with kolla-ansible,
maybe have to mount some extra volumes to container.

Change-Id: I69108209320edad4c4ffa37dabadff62d7340939
Implements: blueprint support-extra-volumes

Because kolla-ansible not have cyborg so should add it.

Implements: blueprint add-cyborg-to-kolla-ansible

Depend-On: I497e67e3a754fccfd2ef5a82f13ccfaf890a6fcd

Change-Id: I6f7ae86f855c5c64697607356d0ff3161f91b239