c12s-kubespray/roles/remove-node/pre-remove/tasks/main.yml

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---
- name: remove-node | Set `nodes_to_drain` as empty list
set_fact:
nodes_to_drain: []
- name: remove-node | Identify nodes to drain, ignore non-cluster nodes
shell: |
set -o pipefail
{{ bin_dir }}/kubectl get nodes -o json \
| jq .items[].metadata.name \
| jq "select(. | test(\"^{{ hostvars[item]['kube_override_hostname']|default(item) }}$\"))"
loop: "{{ node.split(',') | default(groups['kube-node']) }}"
register: nodes
delegate_to: "{{ groups['kube-master']|first }}"
changed_when: false
run_once: true
- name: remove-node | Generate list of nodes to drain
set_fact:
nodes_to_drain: "{{ nodes_to_drain }} + [ '{{ item.stdout | regex_replace('\"', '') }}' ]"
loop: "{{ nodes.results }}"
when: item.stdout | length != 0
run_once: true
- name: remove-node | Drain node except daemonsets resource # noqa 301
command: >-
{{ bin_dir }}/kubectl --kubeconfig /etc/kubernetes/admin.conf drain
--force
--ignore-daemonsets
--grace-period {{ drain_grace_period }}
--timeout {{ drain_timeout }}
--delete-local-data {{ hostvars[item]['kube_override_hostname']|default(item) }}
loop: "{{ nodes_to_drain }}"
register: result
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failed_when: result.rc != 0 and not allow_ungraceful_removal
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delegate_to: "{{ groups['kube-master']|first }}"
run_once: true
until: result.rc == 0 or allow_ungraceful_removal
retries: "{{ drain_retries }}"
delay: "{{ drain_retry_delay_seconds }}"