[api]
api01.domain.tld max_fails=12 fail_timeout=70
api02.domain.tld max_fails=13 fail_timeout=70
api03.domain.tld max_fails=12 fail_timeout=70
api04.domain.tld max_fails=12 fail_timeout=70

{% for upstream1 in nginx_upstreams1.iteritems() %}
upstream {{ upstream1[0] }} {
{% for item in upstream1[1] %}
  {{ item }};
{% endfor %}
{% for host in groups[upstream1[0]] %}
  # {{ host }}
  server {{ hostvars[host].ansible_eth0.ipv4.address }} ;
  {{ hostvars[host].max_fails }}
{% endfor %}
}
{% endfor %}
max_fails {{ hostvars['api01.domain.tld'].max_fails }}
max_fails {{ hostvars['api02.domain.tld'].max_fails }}

hostvars['api01.domain.tld']['max_fails']

max_fails=12
fail_timeout=70

max_fails=13