aufs-tools was required for docker.io package originally,
but Kubespray installs docker-ce package instead today.
In addition, Ubuntu 20.04 doesn't provide aufs-tools as [1].
Then this removes aufs-tools from Ubuntu requirement.

[1]: https://bugs.launchpad.net/ubuntu/+source/aufs-tools/+bug/1947004

* [etcd] ensure etcd is properly upgraded when managed by kubeadm

* [CI] add periodic job to test upgrade of etcd managed by kubeadm

* [upcloud] add upcloud csi-driver

* Option to use ansible_host as api ip for kubueconfig

Signed-off-by: Mathieu Parent <math.parent@gmail.com>

Ensure all Kubelet required kernel values are configured when enabling protectKernelDefaults (#8692)

* feat: split kube_feature_gates variable for different kubernetes components

* docs: add kube_feaute_gates componet variables

If running Kubespray on static IP environments, a task was failed like:

  TASK [kubernetes/preinstall : Configure dhclient hooks for resolv.conf (RH-only)]
  fatal: [ak8s2]: FAILED! => {
    "changed": false, "checksum": "..",
    "msg": "Destination directory /etc/dhcp/dhclient.d does not exist"}

This adds a check for dhclientconffile for running 0100-dhclient-hooks to
run the task only if dhcpclient is enabled.

* [calico] make vxlan encapsulation the default

* don't enable ipip encapsulation by default
* set calico_network_backend by default to vxlan
* update sample inventory and documentation

* [CI] pin default calico parameters for upgrade tests to ensure proper upgrade

* [CI] improve netchecker connectivity testing

* [CI] show logs for tests

* [calico] tweak task name

* [CI] Don't run the provisioner from vagrant since we run it in testcases_run.sh

* [CI] move kube-router tests to vagrant to avoid network connectivity issues during netchecker check

* service proxy mode still fails connectivity tests so keeping it manual mode

* [kube-router] account for containerd use-case

[systemd-resolved] Fix DNS configuration according to docs/dns-stack.md and during reset of cluster (#8560) (#8561)

* Update ansible-lint to 5.4.0 (#8607)

It seems that the Rich version 11.0.0 has a breaking change.
So need to update ansible-lint to 5.3.2 or later.

* Fix for ansible-lint no-changed-when rule (#8607)

this is not complete -- there are almost certainly more instances of
this issue

Signed-off-by: Mac Chaffee <me@macchaffee.com>

fix: regex

fix: wrong regex_replace usage

* change default value for Encrypting Secret Data at Rest to secretbox, remove experimental flag and add documentation

* fix MD012/no-multiple-blanks

* Add kubeadm option to etcd_deployment_type to replace the etcd_kubeadm_enabled variable

Signed-off-by: necatican <necaticanyildirim@gmail.com>

* Add etcd kubeadm deployment documentation

Signed-off-by: necatican <necaticanyildirim@gmail.com>

* Refactor warning for the deprecated 'etcd_kubeadm_enabled' variable

Signed-off-by: necatican <necaticanyildirim@gmail.com>

If kubelet is run with systemd (as it always is when using kubespray),
it starts in systemd's /system.slice/kubelet.service cgroup.

This commit prevents a creation and usage of a second unrelated cgroup.

* Use sysctl_file_path variable for all sysctl_file locations

* Add sysctl_file_path variable to kubespay-defaults

* Remove previously used sysctl file locations if present

* Use explicit filename in roles/kubernetes/node/defaults/main.yml

* Defaults: use explicit value

Signed-off-by: Cyril Corbon <corboncyril@gmail.com>

Improve first_kube_control_plane variable management to avoid installation failures due to variable overlapping (#8388)

* Add kubectl variable

* Replace kubectl usage by kubectl variable in roles

* Remove redundant --kubeconfig on kubectl usage

* Replace unecessary shell usage with command

This reverts commit 4f2e4524.

* Ensure entries for 1.23 are added for supported_versions vars

* cri-o: add support for kubernetes 1.23 but still use cri-o 1.22

* kubescheduler-config: diferentiate config versions based on kube_version

"kubeadm alpha certs" command has been promoted to "kubeadm certs" command,
and "kubeadm alpha certs" has been deprecated since Kubernetes v1.20 as [1].
In addition, Kubespray supports Kubernetes v1.20+.
This delete the deprecated command for cleanup.

[1]: https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.20.md#deprecation

* containerd: change default resolvconf_mode to host_resolvconf

* Wait for kube-apiserver to come back after pod refresh

* Handle resolv.conf gracefully

* Retain currently configured DNS entries to ensure we don't break the resolvers

* Suse uses wickedd for network management so no dhcp hooks

* Molecule: increase ansible timeout

* CI: Increase ansible timeout to 120s for Packet jobs

* Kata-Containers: add checksums for 2.3.0

* Kata-Containers: version 2.3.0 requires kubernetes 1.22.0+

* Update loadbalancers versions

* fix haproxy_config_dir mode

* Improve control plane scale flow (#13)

* Added version 1.20.10 of K8s

* Setting first_kube_control_plane to a existing one

* Setting first_kube_control_plane to a existing one

* change first_kube_master for first_kube_control_plane

* Ansible-lint changes