Change variable in Ansible template based on group

Question

I\'ve got an Ansible inventory file a bit like this:

[es-masters]
host1.my-network.com

[es-slaves]
host2.my-network.com
host3.my-network.com

[es:children]
es-m         


        

Answer 1

If your inventory does not identify hosts with ansible_fqdn, ansible_hostname, etc., you can also use group_names to check if the current host has "es-masters" as one of its groups.

{% if 'es-masters' in group_names %}
node_master=true
{% else %}
node_master=false
{% endif %}

See https://docs.ansible.com/ansible/latest/user_guide/playbooks_variables.html#accessing-information-about-other-hosts-with-magic-variables