find AWS EMR on tag name/value and terminate it

terminate-emr.sh

#!/bin/bash

# Remove termination protection and terminate cluster
# params:
#   $1: clusterId cluster identifier
#
terminateCluster() {
  clusterId=$1
  aws emr modify-cluster-attributes --cluster-id ${clusterId} --no-termination-protected
  aws emr terminate-clusters --cluster-ids ${clusterId}
}


# Find clusters on tag name/value.
# params:
#   $1: tag name ('Name' per default)
#   $2: tag value ('mycluster per default)
# return a list of cluster idendentifiers
findCluster() {
  key=${1:-Name}
  value=${2:-mycluster}
  result=()
  for clusterId in $(aws emr list-clusters --active | jq -r '.Clusters | .[] | .Id')
  do
    matchedId=$(aws emr describe-cluster --cluster-id ${clusterId} | jq -r --arg key "$key" --arg value "$value" '.Cluster |  select(  (.Tags | .[] ) | .Key == $key and .Value == $value)  | .Id ')
    [ ! -z "$matchedId" ] && result+=(${matchedId})
  done
  echo ${result}
}

for clusterId in $(findCluster $1 $2)
do
  echo "Terminate cluster ${clusterId}"
  terminateCluster ${clusterId}
done