如何使用具有不同变量集的模板模块？

问题描述

我的用例如下：

我有一个模板文件，我想从该模板创建2个不同的文件，变量由每个文件使用一组不同的变量。

I have a template file, and I would like to create 2 different files from that template, with the variables being filled by a different set of variables for each file.

例如，假设我要对包含以下行的文件进行模板化：

For example, lets say I want to template the file containing the line:

mkdir -p {{myTemplateVariable}}

我想找到一种适当的方法来获取由 File1和 File2填充的变量。像这样的东西：

I would like to find a proper way to get this variable filled by "File1" and "File2". Something like :

- name: template test 1
  template:
        src=myTemplateFile
        dest=result1


- name: template test 2
  template:
        src=myTemplateFile
        dest=result2

在这里我可以为第一个模板指定要使用的变量为a = File1，为第二个模板指定b = File2。

where I could specify for the first templating that the variable to use is a = "File1" and for the second, b = "File2".

推荐答案

对于Ansible 2.x：

For Ansible 2.x:

- name: template test
  template:
    src: myTemplateFile
    dest: result1
  vars:
    myTemplateVariable: File1

- name: template test
  template:
    src: myTemplateFile
    dest: result2
  vars:
    myTemplateVariable: File2

---

对于Ansible 1.x：

---

For Ansible 1.x:

不幸的是，模板模块不支持向其传递变量，该变量可以在tem内部使用。盘子。有一个，但被拒绝了。

Unfortunately the template module does not support passing variables to it, which can be used inside the template. There was a feature request but it was rejected.

我可以想到两种解决方法：

I can think of two workarounds:

1。 Include

include 语句支持传递变量。因此，您可以将 template 任务放在一个额外的文件中，并使用适当的参数将其包含两次：

The include statement supports passing variables. So you could have your template task inside an extra file and include it twice with appropriate parameters:

my_include.yml ：

my_include.yml:

- name: template test
  template:
        src=myTemplateFile
        dest=destination

main.yml：

- include: my_include.yml destination=result1 myTemplateVariable=File1

- include: my_include.yml destination=result2 myTemplateVariable=File2

2。重新定义myTemplateVariable

另一种方法是在每个模板之前简单地重新定义myTemplateVariable。

Another way would be to simply re-define myTemplateVariable right before every template task.

- set_fact:
     myTemplateVariable: File1

- name: template test 1
  template:
        src=myTemplateFile
        dest=result1

- set_fact:
     myTemplateVariable: File2

- name: template test 2
  template:
        src=myTemplateFile
        dest=result2

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