在變量使用變量時出現語法錯誤

Question

我正在使用Ansile 2.0.1.0。

在我main.yml我有這樣的任務：

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

在執行我收到此錯誤信息：

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 

我如何修正這個錯誤？

Answer 1

在YAML a {中啓動字典。因此你需要引用表達式。

become_user: "{{ansible_user}}" 

請參閱Gotchas in the Ansible YAML docs。