Ansible 批量测试机器端口

[penglongli]

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此示例主要用到 wait_for 模块，文档参见： http://docs.ansible.com/ansible/latest/wait_for_module.html

目的： 我们需要知道几百台机器的某几个端口是否开启的时候（也可用 nc 来判断）

1. 建立 variables 文件

$ mkdir -p inventory/group_vars && touch inventory/group_vars/all.yml
$ cat nventory/group_vars/all.yml
---
ports:
  - "2000"
  - "3000"

hosts:
  - ip: "192.168.0.40"
  - ip: "192.168.0.41"
  - ip: "192.168.0.42"
  - ip: "192.168.0.43"
  - ip: "192.168.0.44"
  - ip: "192.168.0.45"

2. 在建立完变量后，建立 inventory 文件

$ touch inventory/inventory
$ cat inventory/inventory
[local]
127.0.0.1

3. 然后建立 playbook 文件

$ touch playbook.yml
$ cat playbook.yml
---
- hosts: local
  connection: local

  tasks:
    - name: Check port
      wait_for:
        host: "{{ item.0.ip }}"
        port: "{{ item.1 }}"
        state: started
        delay: 0
        timeout: 2
      ignore_errors: yes
      with_nested:
        - "{{ hosts }}"
        - "{{ ports }}"

然后执行：

$ ansible-playbook -i inventory/inventory playbook.yml

源码见： https://github.com/penglongli/ansible-sample/tree/master/sample-4