sansagara

#!/bin/bash
# lists all EMR Clusters along with the associated EC2 Instance Ids
# Use this directly on your command shell. It will print the result in the format:
# "cluster_id | [$ec2_instance-id]... "
# depends on AWS CLI and JQ

for cluster in `aws emr list-clusters --active --query 'Clusters[].Id' --output text`; do
    instances=$(aws emr list-instances --cluster-id ${cluster}  --query 'Instances[?Status.State==`RUNNING`].[InstanceGroupId, InstanceType]' | jq -r -c '.[] | @tsv')
    echo ${cluster} '|' ${instances//$'\n'/ }
done