* created variable to enable/disable reverse dns lookups in coredns

* fixed linting-error in dns-stack.md

* calico: add constant calico_min_version_required

and verify current deployed version against it.

* calico: remove upgrade support with data migration

The tool was used pre v3.0.0 and is no longer needed.

* calico: remove old version support from tasks

* calico: remove old ver support from policy ctrl

* calico: remove old ver support from node

* canal: remove old ver support

* remove unused calicoctl download checksums

calico_min_version_required is the oldest version that can be installed
Older versions can be removed.

If already deployed, get current datastore from CNI config file

* Expose offline install overrides in inventory

* Remove not recommended warning

* Fix upgrade playbook name

* Fix my fix :)

* Rotate kubelet server certificate.

* CI test kubelet server cert rotation

* Approve kubelet serving certificates in tests.

Signed-off-by: Alvaro Saurin <alvaro.saurin@gmail.com>

* Update the cilium svc proxy test to HA mode

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* Fix cilium strict kube-proxy in HA

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* Add a single global endpoint variable

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* Add cilium docs about kube-proxy replacement

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* Fix issues in docs

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

* Moved docker_dns_options to defaults so it can be overridden

* Fixed yaml indentation and markdown

* Moved docker_dns_search_domains to defaults

Signed-off-by: Kuralamudhan Ramakrishnan <kuralamudhan.ramakrishnan@intel.com>

Signed-off-by: Arthur Outhenin-Chalandre <arthur@cri.epita.fr>

Signed-off-by: Alvaro Saurin <alvaro.saurin@gmail.com>

The official word is OpenStack, not Openstack as [1].
This replaces it with OpenStack in the docs.

[1]: https://www.openstack.org/

Add additional metadata configuration options to external Openstack CCM (kubernetes-sigs#6338) (#6339)

* Add additional metadata configuration option to external Openstack CCM (kubernetes-sigs#6338)

* Set the variable external_openstack_metadata_search_order undefined by default

Support for Ambassador OSS as an Ingress Controller when
settings `ingress_ambassador_enabled: true`.

Signed-off-by: Alvaro Saurin <alvaro.saurin@gmail.com>

Now the in-tree cloud provider is deprecated and it is recommended to
the external cloud provider for OpenStack instead.
The doc described how to upgrade from the in-tree cloud provider, but
it is better to describe how to deploy the external cloud provider from
scratch instead for current situation.
This updates the OpenStack doc for this usecase.

* Install Kata Containers as additional container runtime

* Create RuntimeClasses for Kata Containers

* Updated Vagrant to optionally run without Docker as container manager

* Updated Vagrant to optionally use Libvirt nested virtualization

* Add Kata Containers documentation

* Fix lint errors

* Add kata_containers_enabled to kubespray-defaults

* Fixed typo error

* Fixed typo error

Fix the offline docs URL in README

Signed-off-by: Wang Zhen <lazybetrayer@gmail.com>

* dead link

* triggger ci

* update documentation to add and remove nodes

* add information about parameters to change when adding multiple etcd nodes

* add information about reset_nodes

* add documentation about adding existing nodes to ectd masters.