Question

如果在变量yml文件中将Ansible变量设置为https: off，则应跳过以下代码。

default_setup.yml：

 # Other info
 ansible_cache_dir: /var/cache/ansible
 https: off

provision.yml：

 ---
 - hosts: webclient
   vars_files:
   - default_setup.yml

 - name: Update server.xml tomcat https conf
   template:
       src: conf_files/tomcat_server.xml
       dest: /opt/tomcat/apache-tomcat-{{ tomcat_ver }}/conf/server.xml
   become: true
   when: "{{ https }}" == "on"
   notify: restart tomcat

当我播放此Ansible provision.yml时出现以下错误，即使我已添加引号（“”）

  ERROR! Syntax Error while loading YAML.


    The error appears to have been in '/home/centos/check-tomcat/roles/nginx/tasks/main.yml': line 24, column 23, but maybe elsewhere in the file depending on the exact syntax problem.

 The offending line appears to be:

  become: true
  when: "{{ https }}" == "on"
                  ^ here
 We could be wrong, but this one looks like it might be an issue with
 missing quotes.  Always quote template expression brackets when they
 start a value. For instance:

      with_items:
         - {{ foo }}

   Should be written as:

      with_items:
         - "{{ foo }}"

Answer 1

两件事：

off是一个布尔值（false和no的同义词），所以如果保留https定义，那就足够了使用以下条件：
```
when: not https
```
如果您将https更改为字符串，即使用：
```
https: "off"
```
然后条件可能是：
```
when: https == "off"
```

Ansible：基于变量值跳过该步骤

1 个答案: