kubespray/roles/upgrade/pre-upgrade/tasks/main.yml

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---
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- name: See if node is in ready state
shell: "kubectl get nodes | grep {{ inventory_hostname }}"
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register: kubectl_nodes
delegate_to: "{{ groups['kube-master'][0] }}"
failed_when: false
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- set_fact:
needs_cordoning: >-
{% if " Ready" in kubectl_nodes.stdout -%}
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true
{%- else -%}
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false
{%- endif %}
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- name: Cordon node
command: "{{ bin_dir }}/kubectl cordon {{ inventory_hostname }}"
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delegate_to: "{{ groups['kube-master'][0] }}"
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when: needs_cordoning
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- name: Drain node
command: >-
{{ bin_dir }}/kubectl drain
--force
--ignore-daemonsets
--grace-period {{ drain_grace_period }}
--timeout {{ drain_timeout }}
--delete-local-data {{ inventory_hostname }}
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delegate_to: "{{ groups['kube-master'][0] }}"
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when: needs_cordoning