New Install fails due to missing cgroup (v2)

[DonBower]

I have 4 brand new Raspberry Pi CM4s, running 64 bit Raspberry Pi OS Lite (no GUI), on the nodes, and with GUI on the master.
all 4 failed to start the service:
level=fatal msg="failed to find memory cgroup (v2)"

Your documentation should provide this as a pre-req, or add this code to your prereq/tasks/main.yml file:

- name: Enable container features
  replace:
    path: /boot/cmdline.txt
    regexp: '^([\w](?!.*\b{{ item }}\b).*)$'
    replace: '\1 {{ item }}'
  with_items:
  - "cgroup_enable=cpuset"
  - "cgroup_memory=1"
  - "cgroup_enable=memory"

- name: Reboot the Machine to have container features in affect
  ansible.builtin.reboot:
    reboot_timeout: 300

[cwayne18]

It's called out here: https://docs.k3s.io/advanced#raspberry-pi

[DonBower]

Modified: roles/raspberrypi/tasks/main.yml
Add after Set detected_distribution to Raspbian (ARM64 on Debian Buster) task:

- name: Set detected_distribution to Raspbian (ARM64 on Debian Bullseye)
  set_fact:
    detected_distribution: Raspbian
  when:
    - ansible_facts.architecture is search("aarch64")
    - raspberry_pi|default(false)
    - ansible_facts.lsb.description|default("") is match("Debian.*bullseye")

I would do a PR, but I don't have privileges...

[JoeNyland]

I've just hit this, too. It's fixed in #185 but it's been waiting to be merged for over a year 😞 It seems this project is dead.

[daugherr]

I experienced this issue yesterday installing on my Turing Pi V2 cluster. I noted that it's in the configuration but it didn't work. I manually added the configuration as the fastest way to resolve the issue.

One other thing... the last instruction in README.md didn't make sense to me. kube.cfg was copied by Ansible to the master node. What didn't make sense to me was the difference between source and target. As written, wouldn't that copy in the same folder? I didn't do that step. Haven't deployed any containers yet but kubectl get nodes sees all my nodes just fine.

[dereknola]

Resolved with #151