I've started learning and using ansible for configuring my staging and production servers. One thing I'd like to do is configure /etc/hosts through the inventory file.
It seems that this is possible. Here is one such usage: https://gist.github.com/rothgar/8793800
However, I'm a little green to Ansible and I don't get it. Can someone please explain in plain english how I make it work in practice?
For example, if my inventory file contains.
[compute]
1.2.3.4
5.6.7.8
[db]
2.3.4.5
6.7.8.9
10.11.12.13
[all]
compute
db
[all:vars]
...
I'd like to say with consistency that my hosts file after running the playbook contained
2.3.4.5 db1
6.7.8.9 db2
10.11.12.13 db3
1.2.3.4 compute1
5.6.7.8 compute2
Is this possible?