Dumps a CSV of EC2 instances (no pagination, up to 200 per region)

ec2-small-inventory.sh

#!/usr/bin/env bash

set -eu

dumpInstances() {
  local readonly region="$1"
  local readonly date_ts="$(date +%Y%m%d-%H%M)"

  aws ec2 describe-instances \
    --max-items 200 \
    --region "$region" \
    --page-size 200 \
    --query 'Reservations[*].Instances[*].[InstanceId,InstanceType,Placement.AvailabilityZone,Tags[?Key==`Name`].Value,Tags[?Key==`Environment`].Value]' \
    | jq -r '.[] | .[] | {"id": .[0], "type": .[1], "az": .[2] ,"name": .[3][0], "environment": .[4][0]} |  [.id, .type, .az, .name, .environment] | @csv' \
    | tee /dev/tty > "ec2-inventory-${region}-${date_ts}.csv"
}

dumpInstances "us-east-1"
dumpInstances "eu-central-1"