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skwp/read-tags.sh

Created October 2, 2018 16:12
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AWS instance reads its own tags
Raw
read-tags.sh
# Magic AWS ip that gives you metadata about the instance
METADATA="http://169.254.169.254/latest"
# Read the AWS tag for the netmagic value that will control which
# Test network this instance will join
INSTANCE_ID="$(curl -s $METADATA/meta-data/instance-id)"
REGION="$(curl -s $METADATA/dynamic/instance-identity/document | grep region | awk -F\" '{print $4}')"
AWS_ACCOUNT="$(curl -s $METADATA/dynamic/instance-identity/document | grep accountId | awk -F\" '{print $4}')"
ECR_REGION=us-east-1
MY_IP=$(curl -s $METADATA/meta-data/public-ipv4)
# Grab all the tags on the instance and turn them into a list that looks like
# TAG_key=value
INSTANCE_TAGS=$(/usr/local/bin/aws ec2 describe-tags --filters "Name=resource-id,Values=$INSTANCE_ID" --region=$REGION | jq -r '.Tags[] | "TAG_\(.Key)=\"\(.Value)\""')
# Now load the tags into the environment so we can use them as variables below
eval $INSTANCE_TAGS
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