kubeasz/tools/12.delnode.yml

# WARNNING:  this playbook will clean the node {{ NODE_TO_DEL }}
# USAGE:     easzctl del-node 1.1.1.1

- 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: "{{ bin_dir }}/kubectl drain {{ NODE_TO_DEL }} --ignore-daemonsets --delete-local-data"
    ignore_errors: true

  - name: clean node {{ NODE_TO_DEL }} if possible
    shell: "ansible-playbook {{ base_dir }}/roles/clean/clean_node.yml \
              -e NODE_TO_CLEAN={{ NODE_TO_DEL }} \
              -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.stdout"

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

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