Ansible - 致命错误， - "stdout_lines": ["inactive"]}

Question

大家好，我正在使用 ansible 来获取我的机器上的服务状态。不幸的是，我遇到了一个致命错误，我不太确定如何修复。代码可以工作，但是这个“致命”错误确实困扰着我。

代码：

- name: Edit application.properties
  hosts: trainingShuttlesBJ
  # gather_facts: true


  tasks:
    - name: Read service name from config.yml
      include_vars:
        file: config.yml
        name: config_vars

    - name: Get service status
      command: systemctl is-active {{ config_vars.service_to_manage }}
      register: service_status_before
      changed_when: false
      ignore_errors: true

    - name: Debug service status
      debug:
        var: service_status_before.stdout
        verbosity: 2

    - name: Start service if not active
      systemd:
        name: "{{ config_vars.service_to_manage }}"
        state: started
      when: service_status_before.stdout != "active"

    - name: Get service status after starting
      command: systemctl is-active {{ config_vars.service_to_manage }}
      register: service_status_after
      changed_when: false
      ignore_errors: true

    - name: Display success message if service started
      ansible.builtin.debug:
        msg: "Table is ready for production. All steps succeeded successfully."
      when: service_status_after.stdout == "active"

错误信息：

TASK [Get service status] ****************************************************************************
fatal: [10.6.20.150]: FAILED! => {"changed": false, "cmd": ["systemctl", "is-active", "dealer-tool"], "delta": "0:00:00.011135", "end": "2023-08-31 10:07:33.137622", "msg": "non-zero return code", "rc": 3, "start": "2023-08-31 10:07:33.126487", "stderr": "", "stderr_lines": [], "stdout": "inactive", "stdout_lines": ["inactive"]}
...ignoring

Answer 1

除了使用带有

command

的

command: systemctl is-active

模块来获取

service_fact

的错误方法之外，服务状态，根据

systemctl

退出状态 的文档，它将返回

3   "program is not running"    unit is not active

如果设备未运行或未激活。因此，在这种情况下，另外定义失败是必要的

      register: status
      changed_when: false
      failed_when: status.rc > 3

但是，为了简化和降低复杂性，并避免实现开箱即用的功能，建议收集

service_facts

，如Ansible：如何禁用但运行服务？或如何从 Ansible 传递变量

service_facts

？.

进一步阅读

• systemctl

  - 服务退出代码和状态信息解释

• service_facts

  模块 – 将服务状态信息作为事实数据返回