75 lines
2.5 KiB
YAML
75 lines
2.5 KiB
YAML
---
|
|
# Node Ready: type = ready, status = True
|
|
# Node NotReady: type = ready, status = Unknown
|
|
- name: See if node is in ready state
|
|
shell: >-
|
|
{{ bin_dir }}/kubectl get node {{ kube_override_hostname|default(inventory_hostname) }}
|
|
-o jsonpath='{ range .status.conditions[?(@.type == "Ready")].status }{ @ }{ end }'
|
|
register: kubectl_node_ready
|
|
delegate_to: "{{ groups['kube-master'][0] }}"
|
|
failed_when: false
|
|
changed_when: false
|
|
|
|
# SchedulingDisabled: unschedulable = true
|
|
# else unschedulable key doesn't exist
|
|
- name: See if node is schedulable
|
|
shell: >-
|
|
{{ bin_dir }}/kubectl get node {{ kube_override_hostname|default(inventory_hostname) }}
|
|
-o jsonpath='{ .spec.unschedulable }'
|
|
register: kubectl_node_schedulable
|
|
delegate_to: "{{ groups['kube-master'][0] }}"
|
|
failed_when: false
|
|
changed_when: false
|
|
|
|
- name: Set if node needs cordoning
|
|
set_fact:
|
|
needs_cordoning: >-
|
|
{% if kubectl_node_ready.stdout == "True" and not kubectl_node_schedulable.stdout -%}
|
|
true
|
|
{%- else -%}
|
|
false
|
|
{%- endif %}
|
|
|
|
- name: Node draining
|
|
block:
|
|
- name: Cordon node
|
|
command: "{{ bin_dir }}/kubectl cordon {{ kube_override_hostname|default(inventory_hostname) }}"
|
|
delegate_to: "{{ groups['kube-master'][0] }}"
|
|
|
|
- name: Check kubectl version
|
|
command: "{{ bin_dir }}/kubectl version --client --short"
|
|
register: kubectl_version
|
|
delegate_to: "{{ groups['kube-master'][0] }}"
|
|
run_once: yes
|
|
changed_when: false
|
|
when:
|
|
- drain_nodes
|
|
- drain_pod_selector
|
|
|
|
- name: Ensure minimum version for drain label selector if necessary
|
|
assert:
|
|
that: "kubectl_version.stdout.split(' ')[-1] is version('v1.10.0', '>=')"
|
|
when:
|
|
- drain_nodes
|
|
- drain_pod_selector
|
|
|
|
- name: Drain node
|
|
command: >-
|
|
{{ bin_dir }}/kubectl drain
|
|
--force
|
|
--ignore-daemonsets
|
|
--grace-period {{ drain_grace_period }}
|
|
--timeout {{ drain_timeout }}
|
|
--delete-local-data {{ kube_override_hostname|default(inventory_hostname) }}
|
|
{% if drain_pod_selector %}--pod-selector '{{ drain_pod_selector }}'{% endif %}
|
|
when:
|
|
- drain_nodes
|
|
rescue:
|
|
- name: Set node back to schedulable
|
|
command: "{{ bin_dir }}/kubectl --kubeconfig /etc/kubernetes/admin.conf uncordon {{ inventory_hostname }}"
|
|
- name: Fail after rescue
|
|
fail:
|
|
msg: "Failed to drain node {{ inventory_hostname }}"
|
|
delegate_to: "{{ groups['kube-master'][0] }}"
|
|
when:
|
|
- needs_cordoning
|