myproject/ansible/roles/systembase/templates/hosts

# Haproxy
10.30.184.65 example.example.com

# lucene
10.30.148.4 example.example.com


# mq 
10.30.148.149 example.example.com
10.28.225.116 example.example.com


# nginx java_backend uptream
10.30.148.149 example.example.com
10.30.149.41 example.example.com
10.31.74.200 example.example.com

# elk
10.31.88.120 example.example.com

# redis
10.30.184.65 example.example.com


# temp domain for webhook
{{ ansible_eth0['ipv4']['address'] }} webhook2backend

# example.example.com
10.30.148.149 example.example.com
10.30.149.41 example.example.com
10.31.74.200 example.example.com

# example.example.com
10.30.184.65 example.example.com

# hostname
{% if ansible_hostname == "localhost" %}
127.0.0.1 {{ ansible_hostname }}
{% else %}
127.0.0.1 localhost
{{ ansible_eth0['ipv4']['address'] }} {{ ansible_hostname }}
{% endif %}