Question

我有以下变量：

secureVar:
  cosmosconstr: ""
  postgresUrl: ""

它可以为空或包含数据库url，具体取决于我需要在kubernetes中有条件地创建外部服务：

- name: Get DB data
  when: (secureVars | from_json)['cosmosconstr'] | length == 0 and (secureVars | from_json)['postgresUrl'] | length == 0
  shell: ./python/db_credentials.py -dp {{ deploymentPrefix }}
  register: dbData

- name: Generate external services templates
  when: (secureVars | from_json)['cosmosconstr'] | length == 0 and (secureVars | from_json)['postgresUrl'] | length == 0
  action: template src=k8s/common/external-services.j2 dest=/tmp/k8s-external-svc.yml
  vars:
    cosmosUrl: "{{ dbData.stdout_lines[0] | urlsplit('hostname') }}"
    postgresUrl: "{{ dbData.stdout_lines[1] }}"

- name: Generate external services templates
  when: (secureVars | from_json)['cosmosconstr'] | length > 0 and (secureVars | from_json)['postgresUrl'] | length > 0
  action: template src=k8s/common/external-services.j2 dest=/tmp/k8s-external-svc.yml
  vars:
    cosmosUrl: "{{ ( secureVars | from_json )['cosmosconstr'] | urlsplit('hostname') }}"
    postgresUrl: "{{ ( secureVars | from_json )['postgresUrl'] }}"

这就是我现在正在做的事情，我想设置一个条件，以便如果跳过dbData，我将使用secureVars，如果不跳过，则我将使用dbData，问题是，我无法检查dbData.skipped是否等于true，因为如果不跳过，它就不包含skipped属性

Answer 1

您可能要使用默认的False值。

何时：dbData.skipped | default（'False'）

在OP中进行编辑：

我最终这样做：

"{% if dbData.skipped is defined %}{{ ( secureVars.stdout | from_json )['postgresUrl'] }}{% else %}{{ dbData.stdout_lines[1] }}{% endif %}"

根据条件选择变量

1 个答案: