ansible - 我如何在ansible中计算任务成功/失败？

Question

我正在使用 ansible 来设置分布式应用程序。我正在安装节点，然后创建虚拟接口，并且虚拟接口不能多于节点。因此，如果我在 X 节点上安装，并且 Y 节点失败，我需要检查是否没有更多 (XY) 虚拟接口。

有没有办法为特定任务获取成功/失败节点数的数值，以便我以后可以使用它来检查虚拟接口的数量？

标签： ansible

Answer 1

使用ansible-runner。请特别参阅Runner Artifact Job Events和“stats”。例如 ansible-runner 和 playbook

shell> cat private3/project/test.yml
- hosts: test_01:test_02
  gather_facts: false
  tasks:
    - debug:
        var: inventory_hostname
    - fail:
        msg: Fail test_02
      when: inventory_hostname == 'test_02'

shell> ansible-runner -p test.yml -i ID01 run private3
...
ASK [fail] ********************************************************************
skipping: [test_01]

fatal: [test_02]: FAILED! => {"changed": false, "msg": "Fail test_02"}
...

在目录中创建记录private3/artifacts/ID01/job_events/。我不知道有任何公开可用的工具来分析这些事件。我创建了一个显示失败任务的剧本

shell> cat pb.yml
- hosts: localhost
  gather_facts: false

  vars:
    events_dir: private3/artifacts/ID01/job_events

  tasks:
    - find:
        paths: "{{ events_dir }}"
      register: result
    - include_vars:
        file: "{{ item }}"
        name: "{{ 'my_var_' ~ my_idx }}"
      loop: "{{ result.files|json_query('[].path') }}"
      loop_control:
        index_var: my_idx
        label: "{{ my_idx }}"
    - set_fact:
        my_events: "{{ my_events|default({})|
                       combine({my_key: lookup('vars', my_key)}) }}"
      loop: "{{ range(0, result.matched)|list }}"
      loop_control:
            index_var: my_idx
      vars:
        my_key: "{{ 'my_var_' ~ my_idx }}"
    - set_fact:
        my_list: "{{ my_events|json_query('*.{counter: counter,
                                              event: event,
                                              task: event_data.task_action,
                                              host: event_data.host}') }}"
    - debug:
        var: item
      loop: "{{ my_list|sort(attribute='counter') }}"
      loop_control:
        label: "{{ item.counter }}"
      when: item.event == 'runner_on_failed'

给

shell> ansible-playbook pb.yml
...
skipping: [localhost] => (item=11) 
ok: [localhost] => (item=12) => {
    "ansible_loop_var": "item",
    "item": {
        "counter": 12,
        "event": "runner_on_failed",
        "host": "test_02",
        "task": "fail"
    }
}
skipping: [localhost] => (item=13)
...

随意根据您的需要调整剧本。