what would be the best way to set variable based on group

Archives Ansible Project
1 
Is it possible to have condition statement on variable? What would be the best way to assign Variable based on inventory group? Below is the basic idea. 

vars:
  epic: true
  when: inventory_hostname == groups.database or inventory_hostname == groups.apache
  
vars:
   epic: false
   when: inventory_hostname != groups.database or inventory_hostname != groups.apache
2

Put them in a separate file and use the include_vars module:

http://docs.ansible.com/include_vars_module.html

You can use when: statements with that.

3

group_vars/ directories are the best way to do this in many cases.

Create a parent group that contains ‘database’ and ‘apache’ and apply the variables there.