* node: fix default kubelet/runtime cgroups when kube_reserved is false (default)

Commit 1c4db613 introduced a notion of
kube_reserved. This introduced a breaking change defaulting to use
kube.slice for the container_manager and the kubelet as if kube_reserved
was always enabled whereas it is disabled by default.

This commit fixes this by bringing back system.slice whenever
kube_reserved is disabled.

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>

* inventory/sample: change false for kube_reserved as its the default

Changing the commented value in sample inventory to the actual default
value.

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>

---------

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@proton.ch>

Signed-off-by: panguicai008 <1121906548@qq.com>

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

* [cri-o] use cri-o from upstream instead of kubic/OBS

* [cri-o] add proper molecule coverage

* [skopeo] download skopeo from upstream build

* [cri-o] clean up legacy deployments

* disable cri-o per-distribution variables

* 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>

* fix-kube-vip-strict-arp

* fix-kube-vip-strict-arp

* 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

* Fix: set fallback value of kubelet ip6 (#8858)

* Prune the spurious comma in the end of kubelet_address

- Update `roles/kubernetes/node/defaults/main.yml`

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

* Fix: set fallback value of kubelet ip6 (#8858)

- Apply the lint: https://github.com/kubernetes-sigs/kubespray/pull/8926/commits/132606368e31bdb992fe45df80bd74d524b8ed89



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

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>

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