Signed-off-by: bo.jiang <bo.jiang@daocloud.io>

Signed-off-by: hang.jiang <hang.jiang@daocloud.io>

See https://github.com/kubernetes-sigs/kubespray/issues/9693

* optimize cgroups settings for node reserved

* fix

* set cgroup slice for multi container engine

* set cgroup slice for crio

* add reserved cgroups variables to sample files

* Compatible with cgroup path for different container managers

* add cgroups doc

* fix markdown

Signed-off-by: hang.jiang <hang.jiang@daocloud.io>

Signed-off-by: hang.jiang <hang.jiang@daocloud.io>

variable

Fix wrong referenced variable on bgp_peers

Fix bgp_peeras field to be a string

Set default value for bgp_peeras

* feat: add kubelet systemd service hardening option

* refactor: move variable name to kubelet_secure_addresses

Co-authored-by: Cristian Calin <6627509+cristicalin@users.noreply.github.com>

* docs: add diagram about kubelet_secure_addresses variable

Co-authored-by: Cristian Calin <6627509+cristicalin@users.noreply.github.com>

* docs(hardening): add SeccompDefault admission plugin to kubelet feature gates

* fix(kubelet-config): enable config through kubelet_feature_gates

* feat(kubelet): add kubelet_seccomp_default variable

* extra admission controls now don't have a version in their file names
  eventratelimit.v1beta2.yaml.j2 -> eventratelimit.yaml.j2
* cri_socket variable includes the unix:// prefix to be conformat with
  upstream

[docker] use cri-dockerd instead of dockershim for any kubernetes version deployed with docker as the container_manager

This reverts commit e3756786.

The workaround of explicitly specifying root for the kubelet unit was
for pulling images from private registry. Kubernetes now have a
dedicated mechanism with imagePullSecret.

Current Kubespray supports the Kubernetes version 1.21 or upper with
`kube_version_min_required: v1.21.0`

Then kube_version v1.20- related code is not used at all.
This deletes those code for cleanup.

* add Feature synchronized time checking

* fix-invalid-kube-vip-manifest

feat: add variables to manage makeIPTablesUtilChains and streamingConnectionIdleTimeout kubelet parameters (#8796)

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

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

* Alpha-NodeSwap: allow nodes to use swap

* CI: Add Fedora 35 with experimental swap job

Author:    lmercl <lubos.mercl@gmail.com>
Date:      Wed Nov 10 15:30:04 2021 +0000

fix markdown

to remove deprecation warning:

> Flag --feature-gates has been deprecated, This parameter should be set via the config file specified by the Kubelet's --config flag.

* Feature DynamicKubeletConfig is deprecated in 1.22 and will not move to GA

* Add check for dynamic_kubelet_configuration with kube >= 1.22

* Enable Graceful Node Shutdown for Kubernetes >= 1.21.0

* Add sample graceful shutdown parameters

* rename ansible groups to use _ instead of -

k8s-cluster -> k8s_cluster
k8s-node -> k8s_node
calico-rr -> calico_rr
no-floating -> no_floating

Note: kube-node,k8s-cluster groups in upgrade CI
      need clean-up after v2.16 is tagged

* ensure old groups are mapped to the new ones

This replaces kube-master with kube_control_plane because of [1]:

  The Kubernetes project is moving away from wording that is
  considered offensive. A new working group WG Naming was created
  to track this work, and the word "master" was declared as offensive.
  A proposal was formalized for replacing the word "master" with
  "control plane". This means it should be removed from source code,
  documentation, and user-facing configuration from Kubernetes and
  its sub-projects.

NOTE: The reason why this changes it to kube_control_plane not
      kube-control-plane is for valid group names on ansible.

[1]: https://github.com/kubernetes/enhancements/blob/master/keps/sig-cluster-lifecycle/kubeadm/2067-rename-master-label-taint/README.md#motivation

* Allow configureable vni and port for flannel overlay

* additional options for azure cloud config