clean_aws.sh

#!/bin/bash
#
# SCRIPT:
#     clean_aws.sh
#
# FUNCTION:
#     Delete all configuration and instances from aws like ec2,rds and cloudformation
#
# AUTHOR:
#     Diego Rocha
#     diego.rocha@adtsys.com.br
#
# DATE:
#     2016-06-01
#----------------------------------------------------------------------------------------
# How to use:
# 1. You might install the aws-cli 
#  Centos/Red Hat:
#    yum install aws-cli
#  Debian/Ubuntu:
#    apt-get install aws-cli
# 2. type:
#    aws configure
#    You should inform your access key and secret key and also the region
# 3. call the script
#    ./clean_aws.sh
#
#

# This function will wait 20 seconds and show the percent from the wait from 10% till 100%
function waiting () {
   for c in `seq 1 10` 
   do
      let c*=10
      echo -ne "$c%\033[0K\r"
      sleep 2
   done
}

# This function will check if the return of a command was empty, case the return is empty meaning that the object already was deleted from amazon
function checkResult()
{
   result="$1"
   if [ "z$result" == "z" ]; then
      return 0
   else
   echo "[Result: $result]"
     waiting
     return 1
   fi 
}

echo "Excluding RDS instance"
echo "checking RDS instance name:"
for RDS_name in `aws rds describe-db-instances --query 'DBInstances[*].DBInstanceIdentifier' --output text` ; do 
  echo "Deleting: $RDS_name" 
  aws rds delete-db-instance --db-instance-identifier "$RDS_name" --skip-final-snapshot 
  waiting
done

echo "Excluding cloudformation: "
for formation in `aws cloudformation describe-stacks --query 'Stacks[*].StackId' --output text` 
do 
   aws cloudformation delete-stack --stack-name $formation
   waiting 
done

# We need make sure that the RDS instance was deleted before try delete the db-parameter-group
checkDone=1
while [ $checkDone -eq 1 ]; do
   echo "Checking if the RDS instance still exist..."
   result=`/usr/local/bin/aws rds describe-db-instances --query 'DBInstances[*].DBInstanceIdentifier' --output text`
   checkResult $result
   checkDone=$?
done

for RDS_db_param in `aws rds describe-db-parameter-groups --output text | grep -v default | awk '{print $3}'` ; do 
  echo "Deleting RDS db-parameter-group: $RDS_db_param"
  aws rds delete-db-parameter-group --db-parameter-group-name $RDS_db_param
done

#echo "é necessário deletar o snapshot antes do option-groups, já que o option group está relacionado ao snapshot"
echo "Deleting RDS Snapshots"
for snapshot in `aws rds describe-db-snapshots --query 'DBSnapshots[*].DBSnapshotIdentifier' --output text` ; do echo "deleting : $snapshot" ; aws rds delete-db-snapshot --db-snapshot-identifier $snapshot ; done
#aws rds describe-db-snapshots --query 'DBSnapshots[*].DBSnapshotIdentifier' --output text

echo 
echo "Deleting RDS option-groups:"
for optgroup in `aws rds describe-option-groups --query 'OptionGroupsList[*].OptionGroupName' --output text` ; do if [[ $optgroup != defaul* ]] ; then echo "Deleting: $optgroup" ; aws rds delete-option-group --option-group-name $optgroup ; fi ; done

echo 
echo "Deleting RDS subnet-group"
for subnet in `aws rds describe-db-subnet-groups --query "DBSubnetGroups[*].DBSubnetGroupName" --output text` ; do echo "Deleting : $subnet" ; aws rds delete-db-subnet-group --db-subnet-group-name $subnet;  done

#echo
#export VPC_name=`aws ec2 describe-vpcs --query 'Vpcs[*].VpcId' --output text`
#echo "Deleting VPC: $VPC_name"
#aws ec2 delete-vpc --vpc-id $VPC_name