Ansible 过滤器/解析输出到 json

如何解决Ansible 过滤器/解析输出到 json

我正在尝试将 ansible-playbook 输出过滤为有效的 json 输出，以便我可以使用它。 我得到的输出是：

ok: [r-sw01] => {
    "configlets | selectattr(\"name\",\"eq\",\"r-sw01\")": [
        {
            "config": "hostname r-sw01\n\ninterface Management1\n   ip address 10.10.24.10/24\n\ninterface Port-Channel20\n   description USR\n   switchport mode trunk\n\ninterface Ethernet99-100\n   description  USR_Po20\n   speed forced 25gfull\n","containerCount": 0,"containers": [],"dateTimeInLongFormat": 1615984781483,"devices": [
                "r-sw01"
            ],"editable": true,"isAutoBuilder": "","isDefault": "no","isDraft": false,"key": "configlet_71ef71","name": "r-sw01","netElementCount": 0,"note": "","reconciled": false,"sslConfig": false,"type": "Static","typestudioConfiglet": false,"user": "chal","visible": true
        }
    ]
}

来自这个剧本：

---
- name: Playbook to demonstrate cv_container module.
  hosts: cvp_servers
  connection: local
  gather_facts: no
  collections:
    - arista.cvp
  tasks:
    - name: "Gather CVP facts from {{inventory_hostname}}"
      arista.cvp.cv_facts:
        facts:
          configlets
    - debug:
        var: configlets | selectattr("name","eq","{{ tag }}")

尝试使用 python 过滤它：

configlet_settings = subprocess.Popen(["ansible-playbook","configlets.yml","-e",tag,"-i","inventory.ini"],stdout=subprocess.PIPE,stderr=subprocess.PIPE)
out,err = configlet_settings.communicate()
out = out.decode()
out = out.split('\n')
r = re.search(r"configlets.*\[(.*?)\]",str(out))
r = r.group(1)
my_lst = re.findall(r"\w+",r)

但我只得到 (['r','sw01'],)

或“无”，当我尝试更改正则表达式时，如何获得此输出的有效 json？我只需要 | selectattr(\"name\",\"r-sw01\")" 之后的内容

编辑- 尝试将输出重定向到文件：

  ---
- name: Playbook to demonstrate cv_container module.
  hosts: cvp_servers
  connection: local
  gather_facts: no
  collections:
    - arista.cvp
  vars:
    var: var
    vars_files:
            - vars.yml
  tasks:
    - name: "Gather CVP facts from {{inventory_hostname}}"
      arista.cvp.cv_facts:
        facts:
          configlets
    - debug:
        var: configlets | selectattr("name","{{ tag }}")

    - name: write JSON to a file
      copy:
         content: "{{ var|to_nice_json }}"
         dest: somefile.json

出现错误：

Failed! => {"msg": "The task includes an option with an undefined variable. The error was: 'var' is undefined

解决方法

如果要将 Ansible 变量的 JSON 序列化写入文件，可以执行以下操作：

- name: write JSON to a file
  copy:
    content: "{{ var|to_nice_json }}"
    dest: somelog.json

然后将其导入到您的 Python 代码中：

import json

with open('somelog.json') as fd:
  data = json.load(fd)