AWS - Use Keyed Groups
Understand how to implement keyed groups in Ansible to dynamically create and assign groups based on AWS EC2 instance tags, improving inventory management for scalable infrastructure. This lesson teaches how to configure keyed groups, update hosts files, and adjust hostnames using Ansible’s inventory plugins.
We'll cover the following...
Limitation of groups
A limitation of the groups is that new hosts that don’t match the conditions are not accounted for. If a new EC2 instance is deployed with a Linux operating system and the Name tag doesn’t match it won’t be added to the correct group. Using name matching is a fairly fragile and complex solution, especially if there isn’t a naming standard.
Keyed groups
Keyed groups offer another way to define and populate groups within a dynamic inventory. Instead of specifying ...