Ansible:提供的主机列表为空

Question

我有下面的剧本，其中远程主机是用户输入，随后我试图收集有关远程主机的事实并将其复制到本地文件中:

---
- hosts: localhost
  vars_prompt:
      name: hostname
      prompt: "Enter Hostname"
  tasks:
    - name: Add hosts to known_hosts file
      add_host: name={{ hostname }} groups=new
    - name: Check if Host is reachable
      shell: ansible -m ping {{ hostname }}
    - name: Remove existing remote hosts
      shell: ssh-keygen -R {{ hostname }}
    - name: Setup passwordless SSH login
      shell: ssh-copy-id -i ~/.ssh/id_rsa user@{{ hostname }}
    - name: Display facts
      command: ansible {{ groups['new'] }} -m setup
      register: output
    - copy: content="{{ output }}" dest=/var/tmp/dir/Node_Health/temp
...

我在 temp 中收到以下错误文件:

Node_Health]# cat temp
{"start": "2016-06-17 09:26:59.174155", "delta": "0:00:00.279268", "cmd": ["ansible", "[udl360x4675]", "-m", "setup"], "end": "2016-06-17 09:26:59.453423", "stderr": " [WARNING]: provided hosts list is empty, only localhost is available", "stdout": "", "stdout_lines": [], "changed": true, "rc": 0, "warnings":

我也尝试了下面的剧本，它也给出了同样的错误:

---
 - hosts: localhost
  vars_prompt:
      name: hostname
      prompt: "Enter Hostname"
  tasks:
    - name: Add hosts to known_hosts file
      add_host: name={{ hostname }} groups=new
    - name: Check if Host is reachable
      shell: ansible -m ping {{ hostname }}
    - name: Remove existing remote hosts
      shell: ssh-keygen -R {{ hostname }}
    - name: Setup passwordless SSH login
      shell: ssh-copy-id -i ~/.ssh/id_rsa user@{{ hostname }}
- hosts: new
   tasks:
    - name: Display facts
      command: ansible {{ groups['new'] }} -m setup
      register: output
    - local_action: copy content="{{ output }}" dest=/var/tmp/dir/Node_Health/temp
...

任何帮助将不胜感激。

Answer 1

Ansible 假设您将所有主机都放在某个 list 文件中。
add_host仅将您的主机添加到当前运行的 Ansible，这不会传播到您调用的 Ansible 副本 .

你将不得不:

更改命令以使用内联 list 列表，例如 ansible all -i '{{ hostname }},' -m setup (更多细节使用 -i '<hostname>,' here

或将主机名写到文件中，并将其用作您的 list 文件