如何使用Ansible将EC2实例的IP存储在主机文件中？

Question

我尝试了以下操作，但出现以下错误：

  

任务[向主机组添加新实例]

     

---

     

致命：[localhost]：失败！ => {“ msg”：“该任务包含带有未定义变量的选项。错误是：'item'未定义\ n \ n错误似乎出在'/root/site_mini_yarn.yaml'中：第29行，列7，但根据确切的语法问题，\ n可能不在文件的其他位置。\ n \ n出现问题的行似乎是：\ n \ n调试：var = ec2 \ n-名称：将新实例添加到主机组\ n ^ \ n \ nexception类型：\ nexception：'item'未定义“}

以下是yaml文件：

---
  # Talk to all hosts just so we can learn about them...
- name: Create a sandbox instance
  hosts: localhost
  gather_facts: False
  vars:
    keypair: mynewkeypair
    instance_type: t2.micro
    image: ami-05868579
    region: ap-southeast-1
    security_group: mywebDM
  tasks:
    - name: Launch instance
      ec2:
         key_name: "{{ keypair }}"
         group: "{{ security_group }}"
         instance_type: "{{ instance_type }}"
         image: "{{ image }}"
         instance_tags:
            Name: ansibleclient1
         wait: true
         region: "{{ region }}"
         aws_access_key: AKIAJMZ4QEDNMFRGOKIQ
         aws_secret_key: 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

      register: ec2
    - name: Print all ec2 variables
      debug: var=ec2
    - name: Add new instance to host group
      add_host:
         hostname: "{{ item.public_ip }}"
         with_items: ec2.instances