Route53 Hostname Injection

ec2_name.sh

#!/bin/bash
#
# @c Robert Allen [email protected]
#
# /usr/bin/ec2_name

if [ -f /etc/profile.d/aws-apitools-common.sh ]; then
    . /etc/profile.d/aws-apitools-common.sh
    export PATH=/opt/aws/bin:$PATH
fi


ec2-describe-tags  -O $AWS_ACCESS_KEY_ID -W $AWS_SECRET_ACCESS_KEY \
--filter "resource-id=${1}" \
--filter "resource-type=instance" --filter "key=Name" | cut -f5

r53inject.sh

#!/bin/sh
#
# @c Robert Allen [email protected]
#
# /usr/bin/r53inject.sh

source /etc/profile.d/aws-apitools-common.sh
source /root/.credentials.txt

EC2_INSTANCE_ID=`curl -s http://169.254.169.254/latest/meta-data/instance-id`
HOSTNAME=`ec2_name ${EC2_INSTANCE_ID}`
if [ ! "$HOSTNAME" ]; then
    HOSTNAME=${EC2_INSTANCE_ID}
fi
echo $HOSTNAME
R53_ZONE="pci.aws.ifbyphone.com"
FQDN="${HOSTNAME}.${R53_ZONE}"
echo "interface "eth0" {" > /etc/dhcp/dhclient.conf
echo "        supersede host-name \"${HOSTNAME}\";" >> /etc/dhcp/dhclient.conf
echo "        supersede domain-name \"${R53_ZONE} ec2.internal\";" >> /etc/dhcp/dhclient.conf
echo "}" >> /etc/dhcp/dhclient.conf

echo "${FQDN}" > /etc/hostname
hostname --file /etc/hostname

_IPV4_TEST=`curl --write-out %{http_code} --silent --output /dev/null http://169.254.169.254/latest/meta-data/public-ipv4`
if [ ${_IPV4_TEST} -eq 200 ]; then
    R53_VAL=`curl -s http://169.254.169.254/latest/meta-data/public-ipv4`
else
    R53_VAL=`curl -s http://169.254.169.254/latest/meta-data/local-ipv4`
fi
cli53 rrcreate -x 600 -r ${R53_ZONE} ${HOSTNAME} A ${R53_VAL}