Run chef-client with AWS tags

userdata.sh

#!/bin/bash -ex

export HOME=/root
INSTANCE_ID=$(curl -s http://instance-data/latest/meta-data/instance-id)
REGION=$(curl -s http://instance-data/latest/meta-data/placement/availability-zone | sed 's/.$//')

mkdir -vp /tmp/chef ; cd $_
aws ec2 --region $REGION describe-tags --filters "Name=resource-id,Values=$INSTANCE_ID" --output=text | awk -F '\t' -v q=\' '{gsub(/:/,"_",$2); print "TAG_" $2 "=" q$5q}' > instance-tags
. instance-tags
eval $TAG_chef_init

aws s3 cp $s metadata
. metadata
TARBALL=${COOKBOOK_NAME}-${COOKBOOK_VERSION}.tar.gz
aws s3 cp $COOKBOOK_S3_URL .
tar xfz $TARBALL
LOG_PATH="/var/tmp/chef_bootstrap_`date -u +'%F_%H%M'`.log"
LOG_EMAIL=$TAG_Owner
cmd="chef-client -z -r '$r' -E '$e' -l info -L $LOG_PATH"
echo "Running: $cmd"
eval $cmd; return_code=$?
if [[ $return_code -eq 1 ]]; then
 tail -n +1 instance-tags $LOG_PATH | mail -s "(Failed) Chef run for $(hostname -f)" -- $LOG_EMAIL
fi
exit $return_code