Ansible-'when'不是播放的有效属性

Question

我正在尝试解决根本原因，以“消除”警告消息[WARNING]: Could not match supplied host pattern, ignoring: ps_nodes。对我来说，根本原因是当我们创建Linux机器时，ps_nodes主机将为空。因此，我试图添加block: + when: (os_type|capitalize) == "Windows"，以确保仅在os_type是Windows创建时才执行播放。

我该如何实现？因为，我要尝试的是使用when判断，但看起来不可能，而且我不确定要搜索什么。

代码示例：

    - name: "Start handling of vm specific delete scripts for Windows machines"
      block:
        hosts: ps_nodes
        any_errors_fatal: false
        gather_facts: false
        vars:
          private_ip_1: "{{ hostvars['localhost']['_private_ip_1']|default('') }}"
          scripts: "{{ hostvars['localhost']['scripts'] }}"
          sh_script_dir: "{{ hostvars['localhost']['sh_script_dir'] }}"
          cred_base_hst: "{{ hostvars['localhost']['cred_base_hst'] }}"
          cred_base_gst: "{{ hostvars['localhost']['cred_base_gst'] }}"
          newline: "\n"

        tasks:
        - import_tasks: roles/script/tasks/callWindowsScripts.yml
          when: action == 'delete'
      when: (os_type|capitalize) == "Windows"

使用“ when”播放时出错：

ERROR! 'when' is not a valid attribute for a Play

The error appears to be in '/opt/projectX/playbooks/create_vm.yml': line 265, column 3, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

##############################################################################
- name: \"Start handling of vm specific delete scripts for Windows machines\"
  ^ here

Answer 1

我认为问题是缩进。使用“和”：

  - name: "Start handling of vm specific delete scripts for Windows machines"
      block:
        hosts: ps_nodes
        any_errors_fatal: false
        gather_facts: false
        vars:
          private_ip_1: "{{ hostvars['localhost']['_private_ip_1']|default('') }}"
          scripts: "{{ hostvars['localhost']['scripts'] }}"
          sh_script_dir: "{{ hostvars['localhost']['sh_script_dir'] }}"
          cred_base_hst: "{{ hostvars['localhost']['cred_base_hst'] }}"
          cred_base_gst: "{{ hostvars['localhost']['cred_base_gst'] }}"
          newline: "\n"

        tasks:
        - import_tasks: roles/script/tasks/callWindowsScripts.yml
          when: action == 'delete' and (os_type|capitalize) == "Windows"

知道了，

如果您使用已存在的主机（如localhost），请检查ps_nodes中的主机数量并将其委托给它们？

类似这样的东西：

hosts: localhost
vars:
tasks:
 - import_tasks: roles/script/tasks/callWindowsScripts.yml
   delegate_to: ps_nodes
   when: {{ ps_nodes | length > 0}}