Script to cleanup failed CloudFormation change sets

change-sets-cleanup.sh

#!/bin/bash
# Takes args in this order: region, prefix, profile
# Example: bash change-sets-cleanup.sh eu-west-1 kbc- AWS-profile-foo-bar-eu-west-1-AWSAdministratorAccess

# Setting AWS_PROFILE variable to be super safe
export AWS_PROFILE=$3

stacks=$(aws cloudformation list-stacks --stack-status-filter CREATE_COMPLETE UPDATE_COMPLETE --query "StackSummaries[?starts_with(StackName, \`$2\`) == \`true\`].StackName" --output text --region "$1" --profile "$3")
for stack in $stacks; do
  echo "${stack}: cleaning up change sets"
  changesets=$(aws cloudformation list-change-sets --stack-name "${stack}" --query 'Summaries[?Status==`FAILED`].ChangeSetId' --output text --region "$1" --profile "$3")
  for changeset in $changesets; do
    echo "${stack}: deleting change set ${changeset}"
    aws cloudformation delete-change-set --change-set-name "${changeset}" --region "$1" --profile "$3"
  done
done