在变量使用变量时出现语法错误

Question

我正在使用Ansile 2.0.1.0。

在我main.yml我有这样的任务：

- name: hoge 
    hosts: hoge2 
    connection: docker 
    become: yes 
    become_user: {{ansible_user}} 

在执行我收到此错误信息：

ERROR! Syntax Error while loading YAML. 


The error appears to have been in '/Users/fuga/Docker/ansible/main.yml': line 16, column 17, but may 
be elsewhere in the file depending on the exact syntax problem. 

The offending line appears to be: 

    become: yes 
    become_user: {{ansible_user}} 
       ^here 

我如何修正这个错误？

Answer 1

在YAML a {中启动字典。因此你需要引用表达式。

become_user: "{{ansible_user}}" 

请参阅Gotchas in the Ansible YAML docs。