127 lines
4.4 KiB
YAML
127 lines
4.4 KiB
YAML
---
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# Wait for upgrade
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- name: Confirm node upgrade
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pause:
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echo: yes
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prompt: "Ready to upgrade node ?"
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when:
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- upgrade_node_confirm
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- name: Wait before upgrade node
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pause:
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seconds: "{{ upgrade_node_pause_seconds }}"
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when:
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- not upgrade_node_confirm
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- upgrade_node_pause_seconds != 0
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# Node Ready: type = ready, status = True
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# Node NotReady: type = ready, status = Unknown
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- name: See if node is in ready state
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shell: >-
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{{ bin_dir }}/kubectl get node {{ kube_override_hostname|default(inventory_hostname) }}
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-o jsonpath='{ range .status.conditions[?(@.type == "Ready")].status }{ @ }{ end }'
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register: kubectl_node_ready
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delegate_to: "{{ groups['kube_control_plane'][0] }}"
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failed_when: false
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changed_when: false
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# SchedulingDisabled: unschedulable = true
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# else unschedulable key doesn't exist
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- name: See if node is schedulable
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shell: >-
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{{ bin_dir }}/kubectl get node {{ kube_override_hostname|default(inventory_hostname) }}
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-o jsonpath='{ .spec.unschedulable }'
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register: kubectl_node_schedulable
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delegate_to: "{{ groups['kube_control_plane'][0] }}"
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failed_when: false
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changed_when: false
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- name: Set if node needs cordoning
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set_fact:
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needs_cordoning: >-
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{% if (kubectl_node_ready.stdout == "True" and not kubectl_node_schedulable.stdout) or upgrade_node_always_cordon -%}
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true
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{%- else -%}
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false
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{%- endif %}
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- name: Node draining
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block:
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- name: Cordon node
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command: "{{ bin_dir }}/kubectl cordon {{ kube_override_hostname|default(inventory_hostname) }}"
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delegate_to: "{{ groups['kube_control_plane'][0] }}"
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- name: Check kubectl version
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command: "{{ bin_dir }}/kubectl version --client --short"
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register: kubectl_version
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delegate_to: "{{ groups['kube_control_plane'][0] }}"
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run_once: yes
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changed_when: false
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when:
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- drain_nodes
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- drain_pod_selector
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- name: Ensure minimum version for drain label selector if necessary
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assert:
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that: "kubectl_version.stdout.split(' ')[-1] is version('v1.10.0', '>=')"
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when:
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- drain_nodes
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- drain_pod_selector
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- name: Drain node
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command: >-
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{{ bin_dir }}/kubectl drain
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--force
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--ignore-daemonsets
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--grace-period {{ hostvars['localhost']['drain_grace_period_after_failure'] | default(drain_grace_period) }}
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--timeout {{ hostvars['localhost']['drain_timeout_after_failure'] | default(drain_timeout) }}
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--delete-local-data {{ kube_override_hostname|default(inventory_hostname) }}
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{% if drain_pod_selector %}--pod-selector '{{ drain_pod_selector }}'{% endif %}
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when: drain_nodes
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register: result
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failed_when:
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- result.rc != 0
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- not drain_fallback_enabled
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until: result.rc == 0
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retries: "{{ drain_retries }}"
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delay: "{{ drain_retry_delay_seconds }}"
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- name: Drain fallback
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block:
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- name: Set facts after regular drain has failed
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set_fact:
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drain_grace_period_after_failure: "{{ drain_fallback_grace_period }}"
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drain_timeout_after_failure: "{{ drain_fallback_timeout }}"
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delegate_to: localhost
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delegate_facts: yes
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run_once: yes
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- name: Drain node - fallback with disabled eviction
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command: >-
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{{ bin_dir }}/kubectl drain
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--force
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--ignore-daemonsets
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--grace-period {{ drain_fallback_grace_period }}
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--timeout {{ drain_fallback_timeout }}
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--delete-local-data {{ kube_override_hostname|default(inventory_hostname) }}
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{% if drain_pod_selector %}--pod-selector '{{ drain_pod_selector }}'{% endif %}
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--disable-eviction
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register: drain_fallback_result
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until: drain_fallback_result.rc == 0
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retries: "{{ drain_fallback_retries }}"
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delay: "{{ drain_fallback_retry_delay_seconds }}"
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when:
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- drain_nodes
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- drain_fallback_enabled
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- result.rc != 0
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rescue:
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- name: Set node back to schedulable
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command: "{{ bin_dir }}/kubectl --kubeconfig {{ kube_config_dir }}/admin.conf uncordon {{ inventory_hostname }}"
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when: upgrade_node_uncordon_after_drain_failure
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- name: Fail after rescue
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fail:
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msg: "Failed to drain node {{ inventory_hostname }}"
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when: upgrade_node_fail_if_drain_fails
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delegate_to: "{{ groups['kube_control_plane'][0] }}"
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when:
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- needs_cordoning
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