Shows metadata about the current cloud instance. For use in logon scripts or prompts.

motd.sh

#!/bin/sh

# http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html

instanceid=`curl http://169.254.169.254/latest/meta-data/instance-id -s`
amiid=`curl http://169.254.169.254/latest/meta-data/ami-id -s`
hostname=`curl http://169.254.169.254/latest/meta-data/hostname -s`
instancetype=`curl http://169.254.169.254/latest/meta-data/instance-type -s`
kernelid=`curl http://169.254.169.254/latest/meta-data/kernel-id -s`
securitygroups=`curl http://169.254.169.254/latest/meta-data/security-groups -s`
publichostname=`curl http://169.254.169.254/latest/meta-data/public-hostname -s`
availabilityzone=`curl http://169.254.169.254/latest/meta-data/placement/availability-zone -s`
userdata=`curl http://169.254.169.254/latest/user-data -s -f`

echo "
===============================================================================================
# Instance-id: 		    $instanceid
# AMI-id: 		        $amiid
#
# Public: 		        $publichostname
# Private: 		        $hostname
#
# Availability zone:	$availabilityzone
# Instance type:	    $instancetype
#
# Security groups:
# $securitygroups
================================================================================================
$userdata
"