---

- hosts: k8s-cluster

  tasks:

  - name: Empty the /etc/resolv.conf file
    shell: "echo -e 'nameserver 112.112.112.113\nsearch localhost'>/etc/resolv.conf"

  - name: Test dns resolve
    shell: "ping -c 1 www.baidu.com"
    register: ping_result
    ignore_errors: true

  - name: Make sure dns cannot be resolved
    assert:
      that: ping_result.rc|int != 0
      msg: "the ping www.baidu.com return code {{ ping_result.rc|int }} must be non-zero"