多字符串搜索，失败时为ansible

Question

团队，我不知何故是什么错误。.我正在执行多字符串搜索，因此对于未找到的每个字符串都将失败。

      - name: "Validate kubectl access and k8s node lables"
        debug:
          msg: "kubectl get nodes --show-labels -l nodeType={{item}}"
        with_items:
          - gpu
          - cpu
          - monitoring
        register: k8s_labelsresponse

      - debug:
          var: k8s_labelsresponse.stdout
        failed_when: '"nodeType=gpu" not in k8s_labelsresponse.stdout or "nodeType=cpu" not in k8s_labelsresponse.stdout or "nodeType=monitoring" not in k8s_labelsresponse.stdout'

输出：

TASK [Validate kubectl access and k8s node lables] 
ok: [target1] => (item=gpu) => {
    "msg": "kubectl get nodes --show-labels -l nodeType=gpu"
}
ok: [target1] => (item=cpu) => {
    "msg": "kubectl get nodes --show-labels -l nodeType=cpu"
}
ok: [target1] => (item=monitoring) => {
    "msg": "kubectl get nodes --show-labels -l nodeType=monitoring"
}

TASK [debug] **************************************************************************************************************************************************
fatal: [target1]: FAILED! => {"msg": "The conditional check '\"nodeType=gpu\" not in k8s_labelsresponse.stdout or \"nodeType=cpu\" not in k8s_labelsresponse.stdout or \"nodeType=monitoring\" not in k8s_labelsresponse.stdout' failed. The error was: error while evaluating conditional (\"nodeType=gpu\" not in k8s_labelsresponse.stdout or \"nodeType=cpu\" not in k8s_labelsresponse.stdout or \"nodeType=monitoring\" not in k8s_labelsresponse.stdout): Unable to look up a name or access an attribute in template string ({% if \"nodeType=gpu\" not in k8s_labelsresponse.stdout or \"nodeType=cpu\" not in k8s_labelsresponse.stdout or \"nodeType=monitoring\" not in k8s_labelsresponse.stdout %} True {% else %} False {% endif %}).\nMake sure your variable name does not contain invalid characters like '-': argument of type 'AnsibleUndefined' is not iterable"}

Answer 1

首先，您的变量k8s_labelsresponse是一个映射，因此您没有stdout。看看debug: var=k8s_labelsresponse您可以通过以下方式创建该变量：

      msg:
        - kubectl get nodes --show-labels -l nodeType=gpu
        - kubectl get nodes --show-labels -l nodeType=cpu
        - kubectl get nodes --show-labels -l nodeType=monitoring

但是此解决方案非常丑陋，因为它具有硬代码。我建议在Jinja2和set_fact的帮助下创建一个动态变量：

- hosts: localhost
  vars:
    params:
      - cpu
      - gpu
      - monitoring
  tasks:
  - set_fact:
      k8s_labelsresponse: "{% for param in params -%}
        nodeType={{ param }}

        {% endfor %}"
  - debug:
      msg: "{{ k8s_labelsresponse.splitlines() }}"
    failed_when:  '"nodeType=gpu" not in k8s_labelsresponse  or "nodeType=cpu" not in k8s_labelsresponse or "nodeType=monitoring" not in k8s_labelsresponse'