* containerd docker hub registry mirror support

* add docs

* fix typo

* fix yamllint

* fix indent in sample
and ansible-playbook param in testcases_run

* fix md

* mv common vars to tests/common/_docker_hub_registry_mirror.yml

* checkout vars to upgrade tests

This new version uses the same base image as kube-proxy
(k8s.gcr.io/build-image/debian-iptables)
This allow to automatically pick iptables-legacy or iptables-nft,
and be compatible with RHEL/CentOS 8
https://github.com/kubernetes/dns/pull/367



Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Signed-off-by: zouyu <zouy.fnst@cn.fujitsu.com>

* create a wrapper script with pki options
* supports all kubespray managed container engines

Co-authored-by: Hans Feldt <hafe@users.noreply.github.com>

When https://kubespray.io/#/docs/comparisons is generated, having the link in the heading creates the following HTML. When displayed there is no space between "vs" and the link. I simply moved the link into the following paragraph.

```
<h2 id="kubespray-vs-kops"><a href="#/docs/comparisons?id=kubespray-vs-kops" data-id="kubespray-vs-kops" class="anchor"><span>Kubespray vs </span></a><a href="https://github.com/kubernetes/kops" target="_blank" rel="noopener">Kops</a></h2>
```

* Add note about changing private IP in admin.conf.

When I run kubespray, a load balancer is created which should be used instead of the ip of the controller node.

* Procedure to find load balancer and update admin.conf

When I run kubespray, a load balancer is used instead of the private ip of the controller.

* bump crio version to 1.19

* crio package name has changed for debian/ubuntu
* crio upgrade does not work, see #6757

* update crio info in docs

No longer used/supported

If no_proxy_exclude_workers is true, workers will be excluded from the no_proxy variable.  This prevents docker engine restarting when scaling workers. (#6520)

Signed-off-by: holmesb <5072156+holmesb@users.noreply.github.com>

* 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