从 json 输出中提取一个变量，然后使用 ansible 调试和注册输出 [英] extracting a variable from json output then debug and register the outout with ansible

问题描述

我在执行 curl 解析并注册回 ansible 后遇到从 json 输出中提取的变量之一的问题

Hi I have a problem of getting one of the variables extracted from a json output after doing a curl to be parsed and registered back to ansible

剧本:

- name: debug stdout
  debug: 
    msg: "{{ result.stdout | from_json }}"
  register: dataresult

- name: debug fact
  debug:
    msg: "{{ dataresult.data.start_time_string }}"

输出:

TASK [backup_api : debug stdout] 
***********************************************
task path: /home/ansible/cm-dha/roles/backup_api/tasks/main.yml:36
ok: [127.0.0.1] => {
   "msg": {
       "data": [
           {
            "backup_id": 40362,
            "certified": null,
            "instance_id": 148,
            "start_time": 1506985211,
            "start_time_string": "10/03/2017 03:00:11 am"
           }
       ],
      "timestamp": 1507022232
   }

}

错误:

致命:[127.0.0.1]:失败！=> {失败":真的，"msg": "字段 'args' 有一个无效值，它似乎包含一个未定义的变量.错误是:'dict object' 没有属性 'data'\n\n错误似乎出现在 '/home/ansible/cm-dha/roles/backup_api/tasks/main.yml':第 48 行，第 5 列，但可能\n位于文件中的其他位置，具体取决于确切的语法问题.\n\n违规行似乎是:\n\n\n - 名称:调试事实\n ^ 此处\n"

fatal: [127.0.0.1]: FAILED! => { "failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'dict object' has no attribute 'data'\n\nThe error appears to have been in '/home/ansible/cm-dha/roles/backup_api/tasks/main.yml': line 48, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: debug fact\n ^ here\n"

尝试提取值 start_time_string 时发生错误

The error is happening when trying to extract the value start_time_string

那么怎么做可能是因为我尝试了太多东西，比如使用 with_items、with_dict、模拟 data[] 输出进行调试，甚至执行 json 查询但没有成功

so how to do it probably as I tried too many things like using with_items, with_dict , simulating the data[] output to debug and even doing a json query but without success

所以这里有什么帮助吗?

so any help here?

推荐答案

不要使用 debug 来分配事实，而是使用 set_fact :

Don't use debug to assign facts, use set_fact instead:

- name: debug stdout
  set_fact: 
    dataresult: "{{ result.stdout | from_json }}"

- name: debug fact
  debug:
    msg: "{{ dataresult.data[0].start_time_string }}"

这篇关于从 json 输出中提取一个变量，然后使用 ansible 调试和注册输出的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！