Delete orphaned artifacts left by packer.io

packer-kill-orphans.sh

#!/bin/bash

set -e

# Keypairs
echo "Finding Key Pairs..."
KEY_PAIRS_JSON=`aws ec2 describe-key-pairs --filters 'Name=key-name,Values=packer*'`
KEY_PAIRS=`echo "${KEY_PAIRS_JSON}" | grep 'KeyName' |sed -e 's/.*"KeyName": "//' -e 's/",* *$//'`

# Security Groups
echo "Finding Security Groups..."
SECURITY_GROUPS_JSON=`aws ec2 describe-security-groups --filters 'Name=description,Values=Temporary group for Packer'`
SECURITY_GROUPS=`echo "${SECURITY_GROUPS_JSON}" | grep 'GroupId' |sed -e 's/.*"GroupId": "//' -e 's/",* *$//'`
SECURITY_GROUPS_LEFT="${SECURITY_GROUPS}"

# Instances
INSTANCES=''
QUERY_COUNT=1
INSTANCE_QUERY_JSON="security_groups${QUERY_COUNT}.json"
while [ "${SECURITY_GROUPS_LEFT}" != "" ]; do
    echo "Finding Instances (pass ${QUERY_COUNT}, potential 200 security group limit)..."

    FILTER_COUNT=0
    REMAINING=''

    echo '[' > ${INSTANCE_QUERY_JSON}
    echo '  { "Name": "group-id", "Values":' >> ${INSTANCE_QUERY_JSON}
    echo -n '    [' >> ${INSTANCE_QUERY_JSON}
    COMMA=''
    for SECURITY_GROUP in ${SECURITY_GROUPS_LEFT}; do
        FILTER_COUNT=$((FILTER_COUNT + 1))
        if ((( $FILTER_COUNT < 200 ))); then
            echo "${COMMA}" >> ${INSTANCE_QUERY_JSON}
            echo -n "      \"${SECURITY_GROUP}\"" >> ${INSTANCE_QUERY_JSON}
            COMMA=","
        else
            REMAINING="${REMAINING} ${SECURITY_GROUP}"
        fi
    done
    echo '' >> ${INSTANCE_QUERY_JSON}
    echo '    ]' >> ${INSTANCE_QUERY_JSON}
    echo '  }' >> ${INSTANCE_QUERY_JSON}
    echo ']' >> ${INSTANCE_QUERY_JSON}
    THESE_INSTANCES_JSON=`aws ec2 describe-instances --filters file://${INSTANCE_QUERY_JSON}`
    THESE_INSTANCE_IDS=`echo "${THESE_INSTANCES_JSON}" | grep 'InstanceId' |sed -e 's/.*"InstanceId": "//' -e 's/",* *$//'`
    INSTANCES="${THESE_INSTANCE_IDS}
${INSTANCES}"
    SECURITY_GROUPS_LEFT="${REMAINING}"
    QUERY_COUNT=$((QUERY_COUNT + 1))
    rm "${INSTANCE_QUERY_JSON}"
done

KEY_PAIRS_NO_PACKER=`echo ${KEY_PAIRS} |sed -e 's/packer //g'`
INSTANCES_COMMA=`echo ${INSTANCES} |sed -e 's/ /,/g'`

echo KEYS: ${KEY_PAIRS_NO_PACKER}
echo GROUPS: ${SECURITY_GROUPS}
echo INSTANCES: ${INSTANCES_COMMA}

if [ "$1" == "--apply" ]; then
    if [ "${INSTANCES}" != "" ]; then
        echo "aws ec2 terminate-instances --instance-ids $INSTANCES"
        aws ec2 terminate-instances --instance-ids $INSTANCES |tee terminated-instances.txt
    fi

    if [ "${SECURITY_GROUPS}" != "" ]; then
        echo '# Deleting Security Groups...' | tee deleted-security-groups.txt
        for SECURITY_GROUP in ${SECURITY_GROUPS}; do
            echo "aws ec2 delete-security-group --group-id ${SECURITY_GROUP}" |tee -a deleted-security-groups.txt
            aws ec2 delete-security-group --group-id ${SECURITY_GROUP}
        done
    fi

    if [ "${KEY_PAIRS}" != "" ]; then
        echo '# Deleting Key Pairs...' | tee deleted-key-pairs.txt
        for KEY_PAIR in ${KEY_PAIRS_NO_PACKER}; do
            echo "aws ec2 delete-key-pair --key-name \"packer ${KEY_PAIR}\""
            aws ec2 delete-key-pair --key-name "packer ${KEY_PAIR}" |tee -a deleted-key-pairs.txt
        done
    fi
else
    echo "Dry run only. Run with '--apply' to ACTUALLY delete objects."
fi