如何在Ansible中处理每个任务在一个游戏中的不同主机？

Question

我刚接触Ansible(Ansible2.9.6)，最近开始研究一个项目的设计/目录结构。我的任务是配置测试实验室中的设备（特别是不同的思科设备）以支持测试用例。

我希望有一个site.yml文件，包含所有20+测试用例。这个想法是，用户可以根据参数，通过site.yml针对特定的供应商设备类型(Cisco4507、Cisco3850等）执行所有、多个或单个测试用例。

Ansible-Playbook-i Inventories/network_staging site.yml--tags=ntp-e type=C4507

~/site.yml

---
- name: Test Cases
  hosts: all
  gather_facts: false
  connection: local
  tasks:
    - name: ntp role
       hosts: "{{type}}_ntpTC"
       include_role:
         name: ntp
       tags:
         - ntp
    - name: vlan role
       hosts: "{{type}}_vlanTC"
       include_role:
         name: vlan
       tags:
         - vlan

我当前的site.yaml有多个播放器，每个播放器表示一个测试用例，并使用适当的主机。然而，我将需要使用不同的设备来执行任务，来自主机组，这取决于角色/测试用例。下面是一个例子：

---
- name: NTP Test Case
  hosts: "{{type}}_ntpTC"
  gather_facts: false
  connection: local

  tasks:
    - name: ntp role
      include_role:
        name: ntp
      tags:
        - ntp

- name: VLAN Test Case
  hosts: "{{type}}_vlanTC"
  gather_facts: false
  connection: local

  tasks:
    - name: vlan role
      include_role:
        name: vlan
      tags:
        - vlan

###main.yml inventory list
## IPs defined in ~/inventories/network_staging/host_vars/SW6.yml   SW7.yml and SW8.yml

##Cisco 4507 Test Cases
#NTP Test Case
[C4507_ntpTC]
SW8
#VLAN Test Case
[C4507_vlanTC]
SW7
SW6

---
# Tasking for NTP Test Case
- name: import ntp.yml
  tags:
    - ntp

~/roles/ntp/tasks/ntp.yml

---
- name: show NTP
  ios_command:
    commands:
      - <insert ntp show status commands on SW8 here….>

~/roles/vlan/tasks/main.yml

---
# Tasking for VLAN Test Case
- name: import vlan.yml
  tags:
    - vlan

~/roles/vlan/tasks/vlan.yml

---
- name: configure VLAN SW7
  ios_command:
    commands:
      - <insert vlan access switchport configuration here for SW7….>

- name: configure VLAN SW6
  ios_command:
    commands:
      - <insert vlan access switchport configuration here for SW6….>
      - <insert ping SW7 here>

Answer 1

您可以尝试包含when语句。例如：

tasks:
  - name: ntp role
    include_role:
      name: ntp
    tags:
      - ntp
    when: ansible_hostname in groups['group_name']