AWS ec2-instance-selector CLI tool

• AWS Docs: Instance Types
• Karpenter uses the price-capacity-optimized strategy. EC2 Fleet identifies the pools with the highest capacity availability for the number of instances that are launching.
• This means that we will request Spot Instances from the pools that we believe have the lowest chance of interruption in the near term.
• EC2 Fleet then requests Spot Instances from the lowest priced of these pools.
• Knowing this, it's important to give Karpenter the widest possible list of EC2 Instance Types.

Installation

• Visit ec2-instance-selector Github Repo

AWS Instance Types Summary

EC2 Instance Type	Optimized For
m5.large	General purpose
c5.large	Compute optimized
r5.large	Memory optimized
g4dn.xlarge	GPU optimized

Example CLI Commands

Export your AWS region.

export AWS_REGION="eu-central-1"

List as table

ec2-instance-selector \
    --memory 4 \
    --vcpus 2 \
    -o table-wide \
    --cpu-architecture x86_64/amd64

Interactive mode

ec2-instance-selector \
    --memory-min 2 \
    --memory-max 8 \
    --vcpus-min 2 \
    --vcpus-max 6 \
    --gpus 0 \
    --usage-class spot \
    --network-interfaces-min 2 \
    --disk-type ssd \
    --cpu-architecture "x86_64" \
    -o interactive