regionid=us-west-2

profile=default

tag_name=LT-Group

tagvalue=""

instid=""

echo "=> Fetching All EC2 Instances"

instarr=( $(aws ec2 describe-instances --profile ${profile} --region ${regionid} --query 'Reservations[*].Instances[*].{ID:InstanceId}' --output text) )

echo "=> Loop through all the EC2 Instances Found"

for instid in "${instarr[@]}"

do

printf "\n"

echo "=> Querying instance-id: " ${instid} "for tag value"

tagvalue=`aws ec2 describe-tags --profile ${profile} --region ${regionid} --filters "Name=resource-id,Values=${instid}" "Name=key,Values=${tag_name}" --query Tags[].{Value:Value} --output text`

echo "=> Fetching All EC2 Instances Attached to the Instance ${instid}"

volidarr=( $(aws ec2 describe-volumes --profile ${profile} --region ${regionid} --filters Name=attachment.instance-id,Values=${instid} --query 'Volumes[*].Attachments[*].{volid:VolumeId}' --output text) )

echo "=> Loop through all the EC2 Instances Found"

for volid in ${volidarr[@]}

do

echo "Adding tag ${tag_name} with value ${tagvalue} to volume-id: " ${volid}

aws ec2 create-tags --profile ${profile} --region ${regionid} --resources ${volid} --tags Key=${tag_name},Value="${tagvalue}"

echo "Done!"

done

done