ansible-ffibk/roles/service-prometheus/templates/node_exporter_vhost.conf.j2

server {
    listen {{ lookup('dig', inventory_hostname, 'qtype=A') }}:9100 ssl;
    listen [{{ lookup('dig', inventory_hostname, 'qtype=AAAA') }}]:9100 ssl;
    server_name {{ inventory_hostname_short }}.{{ http_domain_external }} {{ inventory_hostname_short }}.{{ http_domain_internal }};

{% if acme_server == 'zuckerwatte' %}
    ssl_certificate     /etc/nginx/ssl/{{ inventory_hostname_short }}.{{ http_domain_external }}/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/{{ inventory_hostname_short }}.{{ http_domain_external }}/privkey.pem;
{% else %}
    ssl_certificate     /etc/nginx/ssl/{{ http_domain_external }}/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/{{ http_domain_external }}/privkey.pem;
{% endif %}

    include /etc/nginx/snippets/letsencrypt-acme-challenge.conf;

    location / {
      proxy_pass http://127.0.0.1:9100;

      allow 127.0.0.0/8;
      allow ::1/128;
{% for host in groups['monitoring'] %}
      allow {{ lookup('dig', host, 'qtype=A') }};
      allow {{ lookup('dig', host, 'qtype=AAAA') }};
      deny all;
{% endfor %}
    }
}