containerd support (#4664)

* Add limited containerd support

Containerd support for Ubuntu + Calico

* Added CRI-O support for ubuntu

* containerd support.

* Reset  containerd support.

* fix lint.

* implemented feedback

* Change task name cri xx instead of cri-o in reset task and timeout condition.

* set crictl to fixed version

* Use docker-ce's container.io package for containerd.

* Add check containerd is installable or not.

* Avoid stop docker when use containerd and optimize retry for reset.

* Add config.toml.

* Fixed containerd for kubelet.env.

* Merge PR #4629

* Remove unused ubuntu variable for containerd

* Polish code for containerd and cri-o

* Refactoring cri socket configuration.

* Configurable conmon.

* Remove unused crictl/runc download

* Now crictl and runc is downloaded by common crictl.yml.

* fixed yamllint error

* Fixed brokenfiles by conflict.

* Remove commented line in config.toml

* Remove readded v1.12.x version

* Fixed broken set_docker_image_facts

* Fix yamllint errors.

* Remove unused apt source

* Fix crictl could not be installed

* Add containerd config from skolekonov's PR #4601

roles/container-engine/containerd/tasks/crictl.yml

@@ -0,0 +1,26 @@
+---
+- name: crictl | Download crictl
+  include_tasks: "roles/download/tasks/download_file.yml"
+  vars:
+    download: "{{ download_defaults | combine(downloads.crictl) }}"
+
+- name: Install crictl config
+  template:
+    src: ../templates/crictl.yaml.j2
+    dest: /etc/crictl.yaml
+    owner: bin
+    mode: 0644
+
+- name: Copy crictl binary from download dir
+  synchronize:
+    src: "{{ local_release_dir }}/crictl"
+    dest: "{{ bin_dir }}/crictl"
+    compress: no
+    perms: yes
+    owner: no
+    group: no
+  delegate_to: "{{ inventory_hostname }}"
+
+- name: Install crictl completion
+  shell: /usr/local/bin/crictl completion >/etc/bash_completion.d/crictl
+  ignore_errors: True

roles/container-engine/containerd/tasks/main.yml

@@ -0,0 +1,50 @@
+---
+- name: Fail containerd setup if distribution is not supported
+  fail:
+    msg: "{{ ansible_distribution }} is not supported by containerd."
+  when:
+    - not ansible_distribution in ["CentOS","RedHat", "Ubuntu", "Debian"]
+
+- name: Install Docker
+  include_role:
+    name: container-engine/docker
+
+- name: Install config.toml
+  template:
+    src: config.toml.j2
+    dest: /etc/containerd/config.toml
+    owner: bin
+    mode: 0644
+
+- name: Stop and disabled Docker
+  systemd:
+    name: docker
+    state: stopped
+    enabled: no
+
+- name: Restart containerd
+  systemd:
+    name: containerd
+    state: restarted
+
+- name: Install crictl config
+  template:
+    src: crictl.yaml.j2
+    dest: /etc/crictl.yaml
+    owner: bin
+    mode: 0644
+
+- name: Install crictl completion
+  shell: /usr/local/bin/crictl completion >/etc/bash_completion.d/crictl
+  ignore_errors: True
+  when: ansible_distribution in ["CentOS","RedHat", "Ubuntu", "Debian"]
+
+- name: Enable containerd
+  systemd:
+    name: containerd.service
+    state: started
+    enabled: yes
+    daemon-reload: yes
+
+- name: flush handlers so we can wait for containerd to come up
+  meta: flush_handlers