在Ansible中，如何将角色中的默认字典与作为参数传递给该角色的字典结合在一起？

Question

在Ansible中 ，如何将角色中的默认字典与作为参数传递给该角色的字典结合在一起 ？

Answer 1

As a solution by example, consider role nginx-reverse-proxy :

nginx-reverse-proxy/defaults/main.yml :

default_nginx:
  application_context: /{{ application_name }}-{{ application_component_name }}
  reverse_proxy:
    port: 8080

nginx-reverse-proxy/templates/reverse-proxy.conf :

{% set combined_nginx = default_nginx | combine(nginx, recursive=true) -%}
location {{ combined_nginx.application_context }} {
        proxy_pass http://localhost:{{ combined_nginx.reverse_proxy.port }};
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

my-nginx-reverse-proxy-meta/main.yml :

dependencies:
  - selfcertification-service
  - role: nginx-reverse-proxy
    nginx: { reverse_proxy: { port: 8095 } }