group_vars.j2

{% set name_key = 'public_dns_name' -%}
{% if use_private_host is defined  -%}
{% set name_key = 'private_dns_name' %}
{% endif %}
mongod_link_to: /mnt/data/mongodb
mongod_datadir_prefix: /var/lib/mongodb
mongod_replication: true
{% for item in ec2_instances %}
{% if loop.index == 1 %}
mongod_repl_master: {{ item.public_dns_name }}
{% endif %}
{% endfor %}
mongod_repset_members:
{% for item in ec2_info_one.instances %}
{% if loop.index == 1 %}
  "{{ item.public_dns_name }}": west1
{% endif %}
{% endfor %}
{% for item in ec2_info_two.instances %}
{% if loop.index == 1 %}
  "{{ item.public_dns_name }}": west2
{% endif %}
{% endfor %}
mongod_replset_name: {{ repset_name }} 
mongod_repl_servers: 
{% for item in ec2_instances %}
  "{{ item.public_dns_name }}": {{ item[name_key] }}
{% endfor %}
mongod_config_servers: 
{% for item in ec2_info_one.instances %}
{% if loop.index < 3 %}
  - {{ item[name_key] }}:{{ mongo_cs_port }}
{% endif %}
{% endfor %}
{% for item in ec2_info_two.instances %}
{% if loop.index == 1 %}
  - {{ item[name_key] }}:{{ mongo_cs_port }}
{% endif %}
{% endfor %}
mongos_servers:
{% for item in ec2_info_one.instances %}
{% if loop.index == 1 %}
  - {{ item[name_key] }}
{% endif %}
{% endfor %}