In kops, both Kubernetes masters and nodes are running as auto-scaling groups in AWS. In kops, the concept is called instance groups (ig), which indicate the same type of instances in your cluster. Similar to nodes across zones, or masters in each availability zone, we could check it via the kops command line:
// kops get instancegroups or kops get ig
# kops get instancegroups --name k8s-cookbook.net
NAME ROLE MACHINETYPE MIN MAX ZONES
master-us-east-1a Master t2.small 1 1 us-east-1a
nodes Node t2.micro 2 2 us-east-1a,us-east-1b,us-east-1c
With kops, you can change the instance type, resize instance groups (masters and nodes), rolling-update, and upgrade cluster. Kops also supports configuration for specific AWS features, such as enable AWS detailed monitoring for the instances in the cluster.
