ansible-role-k3s/tasks/pre_checks_unsupported_rootless.yml

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---
- name: Check if newuidmap is available
ansible.builtin.command:
cmd: which newuidmap
failed_when: false
changed_when: false
register: k3s_check_newuidmap_installed
- name: Check if /proc/sys/kernel/unprivileged_userns_clone exists
ansible.builtin.stat:
path: /proc/sys/kernel/unprivileged_userns_clone
register: k3s_check_unprivileged_userns_exists
- name: Get the value of /proc/sys/kernel/unprivileged_userns_clone
ansible.builtin.slurp:
src: /proc/sys/kernel/unprivileged_userns_clone
register: k3s_get_unprivileged_userns_clone
when: k3s_check_unprivileged_userns_exists.stat.exists
- name: Set the value of k3s_get_unprivileged_userns_clone
ansible.builtin.set_fact:
k3s_get_unprivileged_userns_clone:
content: "MQo="
when: not k3s_check_unprivileged_userns_exists.stat.exists
- name: Get the value of /proc/sys/user/max_user_namespaces
ansible.builtin.slurp:
src: /proc/sys/user/max_user_namespaces
register: k3s_get_max_user_namespaces
- name: Get the contents of /etc/subuid
ansible.builtin.slurp:
src: /etc/subuid
register: k3s_get_subuid
- name: Get the contents of /etc/subgid
ansible.builtin.slurp:
src: /etc/subgid
register: k3s_get_subgid
- name: Get current user subuid and subgid values
ansible.builtin.set_fact:
k3s_current_user_subuid: "{{ (k3s_get_subuid['content'] | b64decode).split('\n')
| select('search', ansible_user_id) | first | default('UserNotFound:0:0') }}"
k3s_current_user_subgid: "{{ (k3s_get_subgid['content'] | b64decode).split('\n')
| select('search', ansible_user_id) | first | default('UserNotFound:0:0') }}"
- name: Check user namespaces kernel parameters are adequate
ansible.builtin.assert:
that:
- k3s_get_unprivileged_userns_clone['content'] | b64decode | int == 1
- ((k3s_get_max_user_namespaces['content'] | b64decode | int >= 28633) or (k3s_os_family != "redhat"))
- k3s_current_user_subuid != "UserNotFound:0:0"
- k3s_current_user_subgid != "UserNotFound:0:0"
- k3s_current_user_subuid.split(':')[2] | int >= 65536
- k3s_current_user_subgid.split(':')[2] | int >= 65536
- ansible_env['XDG_RUNTIME_DIR'] is defined
- k3s_check_newuidmap_installed.rc == 0
success_msg: All kernel parameters passed
fail_msg: >-
Kernel parameters are not set correctly, please check
https://github.com/rootless-containers/rootlesskit