如何做 Ansible 条件 include_vars？答案

【问题标题】：How to do Ansible conditional include_vars?如何做 Ansible 条件 include_vars？
【发布时间】：2016-03-22 14:23:29
【问题描述】：

我正在尝试基于when 条件使用include_vars，如下所示：

- include_vars: clouderamanager.yml
  when: '{{ inventory_hostname }}' in groups['hadoop-clouderamanager']

- include_vars: hadoop-namenode.yml
  when: '{{ inventory_hostname }}' in groups['hadoop-namenode']

- include_vars: resourcemanager.yml
  when: '{{ inventory_hostname }}' in groups['hadoop-resourcemanager']

- include_vars: spark-history-server.yml
  when: '{{ inventory_hostname }}' in groups['spark-history-server']

我收到ERROR! Syntax Error while loading YAML.

The error appears to have been in '~/ansible/roles/hadoop-master/tasks/main.yml': line 4, column 36, but may be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

- include_vars: clouderamanager.yml
  when: '{{ inventory_hostname }}' in groups['hadoop-clouderamanager']
                                   ^ here

【问题讨论】：

标签： automation ansible ansible-2.x

【解决方案1】：

当条件跟随起作用时改变

when: inventory_hostname in groups['hadoop-clouderamanager']

【讨论】：

【解决方案2】：

为常规变量添加示例。

- name: including vars called secrets
  include_vars: "vars.yml"

- name: including vars called secrets
  include_vars: "another_var_file.yml"
  when: "<variable name inside vars.yml> == '<value>'"

【讨论】：