sh 获取EC2实例标记

Posted 2021-05-06

# See https://stackoverflow.com/a/24549602/31493 and
# https://docs.aws.amazon.com/cli/latest/reference/ec2/describe-tags.html

TAG_NAME="Name"
INSTANCE_ID=$(wget -qO- http://instance-data/latest/meta-data/instance-id)
REGION=$(wget -qO- http://instance-data/latest/meta-data/placement/availability-zone | sed -e 's:\([0-9][0-9]*\)[a-z]*\$:\\1:')
TAG_VALUE="`aws ec2 describe-tags --filters "Name=resource-id,Values=$INSTANCE_ID" "Name=key,Values=$TAG_NAME" --region $REGION --output=text | cut -f5`"