Crib Notes: Quick Audit of EC2 Instance-Types

Was recently working on a project for a customer who was having performance issues. Noticed the customer was using t2.* for the problematic system. Also knew that I'd seen them using pre-Nitro instance-types on some other systems they'd previously complained about performance problems with. Wanted to put a quick list of "you might want to consider updating these guys" EC2s. Ended up executing:

$ aws ec2 describe-instances \
   --query 'Reservations[].Instances[].{Name:Tags[?Key == `Name`].Value,InstanceType:InstanceType}' \
   --output text | \
sed -e 'N;s/\nNAME//;P;D'

Because the describe-instances's command-output is multi-line – even with the applied --query filter – adding the sed filter was necessary to provide a nice, table-like output:

t3.medium       ingress.dev-lab.local
t2.medium       etcd1.dev-lab.local
m5.xlarge       k8snode.dev-lab.local
m6i.large       runner.dev-lab.local
t2.small        dns1.dev-lab.local
t3.medium       k8smaster.dev-lab.local
t2.medium       bastion.dev-lab.local
t3.medium       ingress.dev-lab.local
t2.medium       etcd0.dev-lab.local
m5.xlarge       k8snode.dev-lab.local
m6i.large       runner.dev-lab.local
m5.xlarge       k8snode.dev-lab.local
t2.xlarge       workstation.dev-lab.local
t2.medium       proxy.dev-lab.local
t2.small        dns0.dev-lab.local
t3.medium       ingress.dev-lab.local
t2.medium       etcd2.dev-lab.local
m5.xlarge       k8snode.dev-lab.local
t2.medium       mail.dev-lab.local
m6i.large       runner.dev-lab.local
t2.small        dns2.dev-lab.local
t3.medium       k8smaster.dev-lab.local
t2.medium       bastion.dev-lab.local
t2.medium       proxy.dev-lab.local