kubeasz/playbooks/33.delmaster.yml

# WARNNING:  this playbook will clean the kube_master node {{ NODE_TO_DEL }}

- hosts: localhost
  tasks:
  - fail: msg="you CAN NOT delete the last member of kube_master!"
    when: "groups['kube_master']|length < 2 and NODE_TO_DEL in groups['kube_master']"

  - name: run kubectl drain @{{ NODE_TO_DEL }}
    shell: "{{ base_dir }}/bin/kubectl drain {{ NODE_TO_DEL }} --ignore-daemonsets --delete-emptydir-data --force" 
    #ignore_errors: true

  - name: clean node {{ NODE_TO_DEL }}
    shell: "cd {{ base_dir }} && ansible-playbook -i clusters/{{ CLUSTER }}/hosts \
              roles/clean/clean_node.yml \
              -e NODE_TO_CLEAN={{ NODE_TO_DEL }} \
              -e DEL_MASTER=yes \
              -e DEL_NODE=yes \
              -e DEL_LB=yes >> /tmp/ansible-`date +'%Y%m%d%H%M%S'`.log 2>&1 \
            || echo 'data not cleaned on {{ NODE_TO_DEL }}'"
    register: CLEAN_STATUS

  - debug: var="CLEAN_STATUS"

  - name: run kubectl delete node {{ NODE_TO_DEL }}
    shell: "{{ base_dir }}/bin/kubectl delete node {{ NODE_TO_DEL }}"
    ignore_errors: true

  # lineinfile is inadequate to delete lines between some specific line range
  - name: remove the master's entry in hosts
    shell: 'sed -i "/^\[kube_master/,/^\[harbor/ {/^{{ NODE_TO_DEL }}[^0-9].*$/d}" {{ base_dir }}/clusters/{{ CLUSTER }}/hosts'
    args:
      warn: false