[Question] - add upstream servers using inventory

[dandanknight]

Hi, I'm a relative newbie to Ansible, and would like to be able to dynamically add my upstream servers based upon the API servers defined in my Ansible inventory. I'm trying to deploy Nginx as a load balancer. My question is, I don't seem to use with_items in a playbook, so what would be the recommended way of adding this config?

Many thanks

[ei-grad]

Put your api servers into api group in inventory, and then specify something like this in your load balancer vars:

nginx_sites:
  api:
  - |
    listen 80;
    server_name example.com;
    location / {
      proxy_pass http://api/;
    }

nginx_configs:
  upstream:
  - |
    upstream api {
      {% for host in groups['api'] %}
      server {{ hostvars[host].ansible_eth0.ipv4.address }};
      {% endfor %}
    }