ansible include_vars文件，其名称为os和版本

Question

我现在有多个角色来加载一些特定于os版本的变量：

- name: load CentOS 7 variable
  include_vars: "CentOS-7.yml"
  when:
    - ansible_facts['distribution'] == "CentOS"
    - ansible_facts['distribution_major_version'] == "7"

- name: load Ubuntu 18 variables
  include_vars: "Ubuntu-18.yml"
  when:
    - ansible_facts['distribution'] == "Ubuntu"
    - ansible_facts['distribution_major_version'] == "18"

我想扮演一个通用角色；如何加载操作系统名称和版本的vars文件？像

- name: load OS specific variables
  include_vars: "{{distribution}}-{{distribution_major_version}}.yml"

Answer 1

您快到了：

- name: load OS specific variables
  include_vars: "{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yml"

这与使用ansible_facts哈希相同，但更为紧凑。这是等效的：

- name: load OS specific variables
  include_vars: "{{ ansible_facts['distribution'] }}-{{ ansible_facts['distribution_major_version'] }}.yml"

请注意，如果需要，可以使用first_found query来更具体地加载var。示例：

- name: look for the most specific os vars and drop to default
  include_vars: "{{ item }}"
  loop: "{{ query('first_found', { 'files': myfiles, 'paths': mypaths }) }}"
  vars:
    myfiles:
      - "{{ ansible_distribution }}-{{ ansible_distribution_version }}.yml"
      - "{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yml"
      - "{{ ansible_distribution }}.yml"
      - "default.yml"
    mypaths:
      - vars
      - someother/vars/dir