Ansible playbook aborts because the wrong containerd repo is related to Ubuntu 20.04

[Payback159]

Environment:

• Cloud provider or hardware configuration:

4x Raspberry Pi 4 with 8 GB

• OS (printf "$(uname -srm)\n$(cat /etc/os-release)\n"):

Linux 5.4.0-1023-raspi aarch64
NAME="Ubuntu"
VERSION="20.04.1 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.1 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

• Version of Ansible (ansible --version):

ansible --version
ansible 2.9.6
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/ubuntu/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.8.5 (default, Jul 28 2020, 12:59:40) [GCC 9.3.0]

• Version of Python (python --version):

python --version

Command 'python' not found, did you mean:

  command 'python3' from deb python3
  command 'python' from deb python-is-python3

python3 --version
Python 3.8.5

Kubespray version (commit) (git rev-parse --short HEAD):

1a491fc1

Network plugin used:

Calico

Full inventory with variables (ansible -i inventory/sample/inventory.ini all -m debug -a "var=hostvars[inventory_hostname]"):

Command used to invoke ansible:

ansible-playbook -i inventory/mycluster/hosts.yml --become cluster.yml

Output of ansible run:

TASK [container-engine/containerd : ensure containerd repository is enabled] ***************************************************
failed: [himbeere42] (item=deb https://download.docker.com/linux/debian focal stable
) => {"ansible_loop_var": "item", "changed": false, "item": "deb https://download.docker.com/linux/debian focal stable\n", "msg": "apt cache update failed"}
failed: [himbeere43] (item=deb https://download.docker.com/linux/debian focal stable
) => {"ansible_loop_var": "item", "changed": false, "item": "deb https://download.docker.com/linux/debian focal stable\n", "msg": "apt cache update failed"}
failed: [himbeere41] (item=deb https://download.docker.com/linux/debian focal stable
) => {"ansible_loop_var": "item", "changed": false, "item": "deb https://download.docker.com/linux/debian focal stable\n", "msg": "apt cache update failed"}
failed: [himbeere44] (item=deb https://download.docker.com/linux/debian focal stable
) => {"ansible_loop_var": "item", "changed": false, "item": "deb https://download.docker.com/linux/debian focal stable\n", "msg": "apt cache update failed"}

[takamori-tech]

This issue caused by there is no cluster-arm64.yml in roles/container-engine/containerd/vars.
This issue was already reported in #6987, and they work to fix this issue, please see also.
The temporarily solution is just copy cluster-amd64.yml to cluster-arm64.yml.
Ubuntu repository has both amd64 and arm64 for focal.

[Payback159]

Thank you. Now it worked perfectly fine and sorry for the double report. I have seen the issue but somehow not seen it in relation.