ansible:如何在notify中使用with_items中的变量$ {item}? [英] ansible : how to use the variable ${item} from with_items in notify?

问题描述

我是Ansible的新手，我正在尝试创建多个虚拟环境(每个项目一个，在变量中定义项目列表).

I am new to Ansible and I am trying to create several virtual environments (one for each project, the list of projects being defined in a variable).

任务运行良好，我得到了所有文件夹，但是处理程序不起作用，它不会使用虚拟环境初始化每个文件夹.处理程序中的$ {item} varialbe不起作用. 使用with_items时如何使用处理程序?

The task works well, I got all the folders, however the handler does not work, it does not init each folder with the virtual environment. The ${item} varialbe in the handler does not work. How can I use an handler when I use with_items ?

  tasks:    
    - name: create virtual env for all projects ${projects}
      file: state=directory path=${virtualenvs_dir}/${item}
      with_items: ${projects}
      notify: deploy virtual env

  handlers:
    - name: deploy virtual env
      command: virtualenv ${virtualenvs_dir}/${item}

推荐答案

处理程序只是被标记"为一旦执行(无论是分项的子任务)是否要求执行(已更改:结果为是)即可执行. 那时，处理程序就像接下来的常规任务一样，并且不了解逐项循环.

Handlers are just 'flagged' for execution once whatever (itemized sub-)task requests it (had the changed: yes in its result). At that time handlers are just like a next regular tasks, and don't know about the itemized loop.

可能的解决方案不是使用处理程序，而是使用额外任务+有条件

A possible solution is not with a handler but with an extratask + conditional

类似

- hosts: all 
  gather_facts: false
  tasks:
  - action: shell echo {{item}}
    with_items:
    - 1 
    - 2 
    - 3 
    - 4 
    - 5 
    register: task
  - debug: msg="{{item.item}}"
    with_items: task.results
    when: item.changed == True

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