# config.yaml is edited in place, not templated: the live files carry hand
# settings the template does not know. k3s reads them on its next restart,
# which stays manual so etcd members restart one at a time.

- name: Kubelet image garbage collection
  tags: kubelet_gc
  block:
    - name: Create the kubelet drop-in directory
      file:
        path: /etc/rancher/k3s/kubelet.conf.d
        state: directory
        mode: "0755"

    - name: Set the image garbage collection thresholds
      copy:
        dest: /etc/rancher/k3s/kubelet.conf.d/10-image-gc.conf
        mode: "0644"
        content: |
          apiVersion: kubelet.config.k8s.io/v1beta1
          kind: KubeletConfiguration
          imageGCHighThresholdPercent: 70
          imageGCLowThresholdPercent: 55
          imageMaximumGCAge: 168h

    - name: Declare the kubelet-arg list in the k3s config
      lineinfile:
        path: /etc/rancher/k3s/config.yaml
        regexp: '^kubelet-arg:'
        line: 'kubelet-arg:'

    - name: Point the kubelet at the drop-in directory
      lineinfile:
        path: /etc/rancher/k3s/config.yaml
        regexp: '^\s*- config-dir='
        line: '  - config-dir=/etc/rancher/k3s/kubelet.conf.d'
        insertafter: '^kubelet-arg:'