是否可以使用Ansible创建一个在运行每个角色之前提示的剧本？

Posted 2021-04-17

我有角色和主机的集合，这些角色是针对这些角色运行的。但我也有“自定义”主机，只需要其中一些角色，并且它会因主机需要的角色而异。我怎样才能创建一个针对特定主机组运行的剧本，并在每个角色之前询问是否应该运行该角色？

到目前为止，我创建了playbook custom.yml（这不起作用......）：

- name: Select roles
  hosts: custom
  become: yes
  roles:
  - role: custom
  - { role: common, when: run_common == "Y" or run_common == "y" }
  - { role: system, when: run_system == "Y" or run_system == "y" }
  - { role: date, when: run_date == "Y" or run_date == "y" }
  - { role: swap, when: run_swap == "Y" or run_swap == "y" }
  - { role: users, when: run_users == "Y" or run_users == "y" }

我创建了一个角色来提示是否运行特定角色 - custom / tasks / main.yml：

- include_tasks: select_roles.yml
  with_items:
  - common
  - system
  - date
  - swap
  - users

定制/任务/ select_roles.yml：

- include_vars:
  vars_prompt:
    - name: "run_{{ item }}"
      prompt: "Run {{ item }}?"
      default: "N"

  tasks:
    - set_fact:
        run_{{ item }}: "run_{{ item }}"
      when: "run_{{ item }}" == "Y"

目前我让它在一个单一的剧本中运行，但它有很多复制粘贴和编辑，看起来很难看：

- name: Run select roles on all custom nodes
  hosts: custom
  become: yes
  vars_prompt:
     - name: "run_common"
     prompt: "Run common?"
     default: "N"
     private: no
     - name: "run_system"
     prompt: "Run system?"
     default: "N"
     private: no
     - name: "run_date"
     prompt: "Run date?"
     default: "N"
     private: no
     - name: "run_swap"
     prompt: "Run swap?"
     default: "N"
     private: no
     - name: "run_users"
     prompt: "Run users?"
     default: "N"
     private: no
  roles:
  - { role: common, when: run_common == "Y" or run_common == "y" }
  - { role: system, when: run_system == "Y" or run_system == "y" }
  - { role: date, when: run_date == "Y" or run_date == "y" }
  - { role: swap, when: run_swap == "Y" or run_swap == "y" }
  - { role: users, when: run_users == "Y" or run_users == "y" }

答案

看这个解决方案。我觉得你会喜欢它。您可以将您的变量放在另一个文件中并先加载它们。

---
- name: Run Specific Role
  hosts: localhost
  connection: local
  gather_facts: false

  vars:
    mymenu:
      - common
      - system
      - date
      - swap
      - users
    allowed_items:
      - "1"
      - "2"
      - "3"
      - "4"
      - "5"

  vars_prompt:
    - name: runmenu
      prompt: "Run\n1 - {{ mymenu[0] }}\n2 - {{ mymenu[1] }}\n3 - {{ mymenu[2] }}\n4 - {{ mymenu[3] }}\n5 - {{ mymenu[4] }}\n[Enter Values with Comma as Separator]"
      private: false

  pre_tasks:

    - name: Set Fact
      set_fact:
        menu{{ item  }}: "menu{{ item  }}"
      with_items: "{{ runmenu.split(',') }}"
      when: item in allowed_items

  roles:
  - role: common
    when: menu1 is defined