问AnsibleUndefinedVariable：“ansible.vars.hostvars.HostVarsVars object”没有特性

EN

---
- name: Set 192.168.122.4 Hostname
  hosts: 192.168.122.4
  gather_facts: false
  become: true
  tasks:
    - name : Name 4
      hostname:
        name:  ansible1.example.com

- name: Set 192.168.122.5 Hostname
  hosts: 192.168.122.5
  gather_facts: false
  become: true
  tasks:
    - name : Name 5
      hostname:
        name: ansible2.example.com

- name: Manage Hosts File
  hosts: all
  gather_facts: true
  become: true
  tasks:
    
    - name: Deploy Hosts Template
      template:
        src: hosts.j2
        dest: /etc/hosts

# Managed by Ansible
127.0.0.1 localhost
{% for host in groups['all'] %}
{{ hostvars[host]['ansible_default_ipv4']['address'] }} {{ hostvars[host]['ansible_fqdn'] }} {{ hostvars[host]['ansible_hostname'] }}
{% endfor %}