c12s-kubespray/roles/kubernetes/control-plane/tasks/define-first-kube-control.yml

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---
- name: Check which kube-control nodes are already members of the cluster
command: "{{ bin_dir }}/kubectl get nodes --selector=node-role.kubernetes.io/control-plane -o json"
register: kube_control_planes_raw
ignore_errors: yes
changed_when: false
- name: Set fact joined_control_panes
set_fact:
joined_control_planes: "{{ ((kube_control_planes_raw.stdout| from_json)['items'])| default([]) | map (attribute='metadata') | map (attribute='name') | list }}"
delegate_to: item
loop: "{{ groups['kube_control_plane'] }}"
when: kube_control_planes_raw is succeeded
run_once: yes
- name: Set fact first_kube_control_plane
set_fact:
first_kube_control_plane: "{{ joined_control_planes|default([]) | first | default(groups['kube_control_plane']|first) }}"