Ansible playbook-wide variable

Question

I have a playbook with multiple hosts section. I would like to define a variable in this playbook.yml file that applies only within the file, for example:

vars:
         


        

Answer 1

I prefer to keep global variables in the inventory file, where you keep the groups and names of your hosts.

For example:

my-hosts:

[all:vars]
my_global_var="hello"

[db]
db1
db2
[web]
web1
web2

Run your playbook with:

ansible-playbook -i my-hosts playbook.yml

The variable will now be defined for all hosts.

If you are using ec2.py or some other dynamic inventory, you can put the global variables in the file group_vars/all to achieve the same result.