Question

请帮助设置其他主机的变量：

例如：

---
- name: host1  - varaible from  vars_prompt
  hosts: '{{ host }}'
  become: yes
  vars_prompt:
   - name: "host"
     prompt: "Enter host:"
     default: 'Aubuntu'

  tasks:
  - name:
    set_fact:
     monitip: "{{ansible_host}}"


- name: host2 - static host
  hosts: 'host2'

  tasks:
  - name: Добавляем в мониторинг
    shell: echo {{monitip}}

如何将{{monitip}}发送到host2？我需要基于vars_prompt {{ host }}从host1获取ip，并在host2中使用它

fatal: [host2]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'monitip' is undefined

UPD：

感谢您的答复，但是我自己将变量保存到文件中

---
- name: host1  - varaible from  vars_prompt
  hosts: '{{ host }}'
  become: yes
  vars_prompt:
   - name: "host"
     prompt: "Enter host:"
     default: 'Aubuntu'

  tasks:

  - lineinfile : >
     dest=/tmp/s_ip.txt
     create=yes
     line='{{ansible_host}}'
    delegate_to: localhost


- name: host2 - static host
  hosts: 'host2'

  tasks:

  - command: cat /tmp/s_ip.txt
    register: monitip
    delegate_to: localhost

  - name: Добавляем в мониторинг
    shell: echo {{monitip.stdout}}

Answer 1

您可以按名称引用其他主机的hostvars：

- hosts: host2
  tasks:
  - name: copy over monitip from the other host
    set_fact:
      monitip: '{{ hostvars[the_first_host].monitip }}'
    vars:
      the_first_host: '{{ groups.all | difference([inventory_hostname]) | first }}'

当然，如果host2代表其中的一组是行不通的，但这还是一般的想法

虽然这是您的问题的答案，但您也可能会不必要地跳过很多麻烦，因为您始终可以在同一本书中直接访问该hostvar：

- hosts: host2
  vars_prompt:
  - # as before
  tasks:
  - set_fact:
      monitip: '{{ hostvars[host].ansible_host }}'
  # tada, drama free

Answer 2

有趣的请求，我想我设法通过其他方法使它起作用。库存文件，例如：

$ cat inv
[myhosts]
host1.example.com
host2.example.com

然后是类似的剧本：

---
- hosts: myhosts
  become: yes
  vars_prompt:
    - name: "myhost"
      prompt: "Enter host:"
      default: localhost

  tasks:

    - name: Use it
      debug:
        msg: "IP used on  {{ ansible_fqdn }} is {{ hostvars[myhost]['ansible_default_ipv4']['address'] }}"
      when: ansible_fqdn == myhost

另一台主机的ansible设置变量

2 个答案: