prole/infrastructure/roles/k3s/tasks/main.yml
2026-01-26 18:56:17 -08:00

101 lines
3.1 KiB
YAML

---
- name: Skip k3s when state is absent
ansible.builtin.meta: end_host
when: k3s_state == "absent"
- name: Set k3s service name
ansible.builtin.set_fact:
k3s_service_name: "{{ 'k3s' if k3s_role == 'server' else 'k3s-agent' }}"
- name: Check if k3s service is installed
ansible.builtin.stat:
path: "/etc/systemd/system/{{ k3s_service_name }}.service"
register: k3s_service
- name: Check if k3s binary exists
ansible.builtin.stat:
path: /usr/local/bin/k3s
register: k3s_bin
- name: Determine if k3s needs installation
ansible.builtin.set_fact:
k3s_needs_install: "{{ not k3s_bin.stat.exists or not k3s_service.stat.exists }}"
- name: Install k3s dependencies
ansible.builtin.package:
name:
- curl
- iptables
state: present
- name: Preflight - ensure rancher mountpoint is mounted
ansible.builtin.command: "findmnt -n {{ k3s_rancher_mountpoint | default('/var/lib/rancher') }}"
register: rancher_mounted
changed_when: false
failed_when: rancher_mounted.rc != 0
- name: Guardrail - ensure rancher mountpoint is not on SD/rootfs
ansible.builtin.command: "findmnt -n -o SOURCE {{ k3s_rancher_mountpoint | default('/var/lib/rancher') }}"
register: rancher_source
changed_when: false
- name: Fail if rancher mountpoint is on SD
ansible.builtin.fail:
msg: "{{ k3s_rancher_mountpoint | default('/var/lib/rancher') }} is on SD/rootfs ({{ rancher_source.stdout }}). Refusing to proceed."
when: rancher_source.stdout is search("mmcblk0") or rancher_source.stdout is search("/dev/mmc")
- name: Validate join configuration
ansible.builtin.assert:
that:
- k3s_server_url is defined
- k3s_server_url | length > 0
- k3s_token is defined
- k3s_token | length > 0
fail_msg: "k3s_server_url and k3s_token are required for non-init nodes."
when: not k3s_cluster_init | bool
- name: Ensure k3s config directory exists
ansible.builtin.file:
path: /etc/rancher/k3s
state: directory
mode: "0755"
- name: Ensure kubeconfig group exists (server)
ansible.builtin.group:
name: "{{ k3s_kubeconfig_group }}"
state: present
when: k3s_role == "server"
- name: Ensure kubeconfig users are in group (server)
ansible.builtin.user:
name: "{{ item }}"
groups: "{{ k3s_kubeconfig_group }}"
append: true
loop: "{{ k3s_kubeconfig_users }}"
when: k3s_role == "server" and (k3s_kubeconfig_users | length) > 0
- name: Render k3s config
ansible.builtin.template:
src: config.yaml.j2
dest: /etc/rancher/k3s/config.yaml
mode: "0640"
notify: Restart k3s
- name: Install k3s
ansible.builtin.shell: |
curl -sfL https://get.k3s.io | sh -
environment:
INSTALL_K3S_EXEC: "{{ k3s_role }}"
INSTALL_K3S_VERSION: "{{ k3s_version if (k3s_version | length > 0) else omit }}"
args:
creates: /usr/local/bin/k3s
when: k3s_needs_install
- name: Ensure k3s service state
ansible.builtin.service:
name: "{{ k3s_service_name }}"
state: "{{ 'started' if k3s_state == 'present' else 'stopped' }}"
enabled: "{{ k3s_state == 'present' }}"
when: k3s_service.stat.exists or k3s_bin.stat.exists