check_info.yaml

---
- name: Check Kubernetes Version
  hosts: controlplanes:workers
  tags: kubernetes
  roles:
    - variables
  tasks:
  - name: Get Kubelet Minor Version
    shell: "if [ ! -z $(which kubelet) ]; then kubelet --version | awk '{ print $2 }' | grep -oP '([0-9].[0-9]+)'; fi"
    become: yes
    args:
      executable: "/bin/bash"
    register: kubelet_minor_version
    changed_when: false

  - name: Get Kubelet Revision
    shell: "if [ ! -z $(which kubelet) ]; then kubelet --version | awk '{ print $2 }' | grep -oP '(?!\\.)([0-9]+)$'; fi"
    become: yes
    args:
      executable: "/bin/bash"
    register: kubelet_revision
    changed_when: false

  - debug:
      msg:
        - "Current Kubelet Version: {{ kubelet_minor_version.stdout }}.{{ kubelet_revision.stdout }}"
        - "Would install Kubelet Version: {{ kubernetes_minor_version }}.{{ kubernetes_revision }}"
    when:
    - kubelet_minor_version.stdout != ""
    - kubelet_revision.stdout != ""

- name: Check CNI Version (Calico for now)
  hosts: controlplanes
  tags: cni
  roles:
    - variables
  tasks:
  - name: Check for existing Calico DaemonSet
    shell: "kubectl --kubeconfig {{ kube_user_config }} get daemonset -A | grep -ic calico-node"
    become: no
    failed_when: "calico_ds_count == 2"
    register: calico_ds_count
    changed_when: false
    run_once: true

  - name: Check for Calico version
    shell: "kubectl --kubeconfig {{ kube_user_config }} get ds -n calico-system calico-node -o yaml | grep -m 1 'image:' | sed -nr 's/.+v([0-9.]+)/\\1/p'"
    become: no
    register: calico_version_found
    changed_when: false
    when: "( calico_ds_count.stdout|int > 0 )"
    run_once: true

  - debug:
      msg:
        - "Calico Version Found {{ calico_version_found.stdout }}"
        - "Calico Version to be installed {{ calico_version }}"
    when: "( calico_ds_count.stdout|int > 0 )"
    run_once: true

- name: Check MetalLB Version
  hosts: controlplanes
  tags: metallb
  roles:
    - variables
  tasks:
    - name: Check for existing Metallb Controller
      shell: "kubectl --kubeconfig {{ kube_user_config }} get pods -A | grep metallb | grep -c controller"
      become: no
      failed_when: "metallb_controller_count == 2"
      register: metallb_controller_count
      changed_when: false

    - name: Check for existing version
      shell: "kubectl --kubeconfig {{ kube_user_config }} get deployment -n metallb-system controller -o jsonpath=\"{.spec.template.spec.containers[0].image}\" | awk -F ':v' '{print $2}'"
      become: no
      register: metallb_current_version
      when: "( metallb_controller_count.stdout|int > 0 )"

    - name: Current Version of Metallb Deployment on host
      debug:
        msg: 
        - "current version {{ metallb_current_version.stdout }}"
        - "version to be applied {{ metallb_version }}"
      when: "( metallb_controller_count.stdout|int > 0 )"

- name: Check Longhorn Version
  hosts: controlplanes
  tags: longhorn
  roles:
    - variables
  tasks:
    - name: Check for existing version
      shell: "kubectl --kubeconfig {{ kube_user_config }} get daemonset -n longhorn-system longhorn-manager -o jsonpath=\"{.spec.template.spec.containers[0].image}\" | awk -F ':v' '{print $2}'"
      become: no
      register: longhorn_current_version
      changed_when: false

    - name: Current Version of Longhorn Deployment on host
      debug:
        msg: 
        - "current version {{ longhorn_current_version.stdout }}"
        - "version to be applied {{ longhorn_version }}"
      when: longhorn_current_version.stdout != ""