---
- hosts: all
  # gather_facts: no

  vars_files: 
    - vars.yml

  tasks:

    - name: test1
      debug:
        msg: "{{ foo }}"

  # 不加双引号会报错
    # - name: test2
    #   debug:
    #     msg: {{ foo }}

    - name: test3
      debug:
        msg: "{{ foo3_list[1] }}"

    - name: test4
      debug:
        msg: "{{ foo3_list|first }}"

    - name: test4
      debug:
        msg: "{{ foo4_dict.xiaoming }}"

    - name: test5
      debug:
        msg: "{{ foo4_dict['xiaoli'] }}"

    - name: test6
      debug:
        msg: "{{ ansible_eth0['ipv4']['address'] }}"

# ansible-playbook main1.yml  --limit 192.168.31.100