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Hiran Chaudhuri
Asked: 2021-02-18 13:11:49 +0800 CST

Ansible - 检查项目列表

  • 772

我有一个字符串列表，我期望在某些命令的输出中。如何创建一个可测试的 ansible 脚本 - 如果一个或多个条目不包含 - 执行任务？

所以我的 ansible 脚本可能看起来像：

vars:
  musthave:
    - value1
    - value2
tasks:
- name: Check the configured values
  command: "cat configfile"
  register: current_configuration
  changed_when: false

- set a variable if one or more of the musthave's are missing in current_configuration.stdout
  ...

- name: Execute task to reconfigure system
  command: "reconfigure..."
  when: true = variable

那么有没有类似的东西

variable = false
for s in musthave:
    if not s in current_configuration.stdout:
        variable |= true
ansible

1 个回答

  1. Best Answer

    虽然使用建议的社区模块可能更容易解决，但我更喜欢不意味着要安装更多库的解决方案。这是我想出的解决方案。

    我最初的请求是检查是否存在可能出现在命令输出中某处的特定值。为差异准备工作列表是一个缺点，副作用是您可以计算两个方向的差异。

    所以现在我不仅可以检查丢失的条目，还可以检查那些太多的条目。

    - name: print hostvars
  debug:
    var: hostvars[{{ ansible_host }}]['certificate_domains']

- name: print certificate
  delegate_to: silver.fritz.box
  command: "openssl x509 -in /home/hiran/homeserver.crt -noout -text"
  register: certificate

- name: grab subject's common name and alternative names
  set_fact:
    commonName: "{{ certificate.stdout | regex_search('Subject.*CN\\s=\\s([\\.a-zA-Z]+)', '\\1') }}"
    altNames: "{{ certificate.stdout | regex_findall('DNS:([\\.a-zA-Z]+)') }}"
- name: prepare the lists so they can be subtracted from each other
  set_fact:
    contained: "{{ (commonName + altNames) | unique }}"
    musthave: "{{ hostvars[{{ ansible_host }}]['certificate_domains'] | unique }}"
- name: calculate differences
  set_fact:
    missing: "{{ musthave | difference(contained) }}"
    toomuch: "{{ contained | difference(musthave) }}"

- name: show difference
  debug:
    msg: Something is wrong
  when: (missing | length)>0 or (toomuch | length)>0
    • 0

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