Signed-off-by: tu1h <lihai.tu@daocloud.io>

Signed-off-by: tu1h <lihai.tu@daocloud.io>

* 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: bo.jiang <bo.jiang@daocloud.io>

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

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

When running molecule jobs, we saw the folloing warning message:

 [DEPRECATION WARNING]: [defaults]callback_whitelist option, normalizing names
 to new standard, use callbacks_enabled instead. This feature will be removed
 from ansible-core in version 2.15. Deprecation warnings can be disabled by
 setting deprecation_warnings=False in ansible.cfg.

callbacks_enabled has been added since Ansible 2.11 and Kubespray is using
Ansible 2.12 at master branch. So we can use callbacks_enabled safely to
avoid the warning message.

* Force containerd service unmasking

Force systemd to unmask and start service when adding containerd service

* Eliminate restart and move unmasking step

Switch to start instead of restart
Move unmasking to restart handler

* Add unmasking to similar container runtimes

* Add missing service names

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

* Add epoch to docker-ce and docker-ce-cli packages to ensure docker upgrade

* Split container-engine redhat vars to support legacy RHEL 7 version management

* Support ansible_distribution_major_version when disvering vars with ansible_os_family

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

* 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

* Containerd: use cgroupsv2 where available (fedora)

* Docker: use cgroupsv2 where available (fedora)

* cri-o: use cgroupsv2 where available (fedora)

* CI: use netchecker images from quay to prevent throttling

* Molecule: use hello-world image from quay.io

Docker: replace the use of containerd_version with docker_containerd_version to avoid causing conflicts when bumping containerd_version (#8130)

* Containerd: download containerd from upstream instead of using distro specific packages

split runc download to separate role
make bootstrap-os role deploy container-selinux and seccomp libraries
clean up package manager provided containerd
move variables to docker role that are no longer common with containerd

* Containerd: make molecule testing more relevant

* replace ubuntu18 with ubuntu20
* add centos8 and debian11 to molecule tests
* run kubernetes/preinstall role to ensure relevancy
  of test including dependency packages

* CI: adjust test scenarios for downloaded containerd

Closes https://github.com/kubernetes-sigs/kubespray/issues/8028



Signed-off-by: Iago Santos <iago.santos.pardo@adfinis.com>

* Ansible: move to Ansible 3.4.0 which uses ansible-base 2.10.10

* Docs: add a note about ansible upgrade post 2.9.x

* CI: ensure ansible is removed before ansible 3.x is installed to avoid pip failures

* Ansible: use newer ansible-lint

* Fix ansible-lint 5.0.11 found issues

* syntax issues
* risky-file-permissions
* var-naming
* role-name
* molecule tests

* Mitogen: use 0.3.0rc1 which adds support for ansible 2.10+

* Pin ansible-base to 2.10.11 to get package fix on RHEL8

* Docker/Containerd: move downloads urls to containerd-common

* gVisor: initial support for gVisor container runtime

* Update docker package to 20.10.6

* Add Fedora 33 image and CI, remove Fedora 31 (EOL)

* AlmaLinux: ansible>2.9.19 is needed to know about AlmaLinux

* AlmaLinux: identify as a centos derrivative

* AlmaLinux: add AlmaLinux to checks for CentOS

* Use ansible_os_family to compare family and not distribution