ec2-backup-v1

#!/bin/bash

phelp () {
    echo -e "NAME\n\tec2-backup-v1 -- backup a directory into Elastic Block Storage (EBS)\n"
    echo -e "USAGE\n\tec2-backup-v1 [-h] -v <volume-id>\n"
    echo -e "OPTIONS\n\tec2-backup-v1 accepts the following command-line flags:"
    echo -e "\t-h            Print a usage statement and exit."
    echo -e "\t-v volume-id  Use the given volume instead of creating a new one."
    if [ -z $1 ]; then
	exit 1
    fi
    exit $1
}

dothething () {
    VOLUME=$1
    # Where is the volume?
    REGION=""
    ZONE=""

    declare -a regions=("us-east-1" "us-west-1" "us-west-2" "eu-central-1" "eu-west-1" "ap-southeast-1" "ap-southeast-2" "ap-northeast-1" "sa-east-1")

    # Iterate over all possible regions
    for region in "${regions[@]}"
    do
	ZONE=`aws ec2 describe-volumes --filter "Name=volume-id,Values=$VOLUME" --query Volumes[].AvailabilityZone --output text --region $region`
	if [[ ! -z "$ZONE" ]]; then
	    REGION=$region
	    break
	fi
    done

    # Did we get it?
    if [ -z $REGION ]; then
	# Nope
	echo "ERROR: $VOLUME is not in a supported region."
	echo "Should be in ${regions[*]}"
	exit 1
    fi
    
    # What ami should we use?
    AMI=''
    case "$ZONE" in
	us-east-1* )      AMI='ami-bc8fc8d6';;
	us-west-1* )      AMI='ami-7b0b621b';;
	us-west-2* )      AMI='ami-9c9f8ffd';;
	eu-central-1* )   AMI='ami-32e6f45e';;
	eu-west-1* )      AMI='ami-ac983ddf';;
	ap-southeast-1* ) AMI='ami-c8ea2bab';;
	ap-southeast-2* ) AMI='ami-8a89d0e9';;
	ap-northeast-1* ) AMI='ami-d7eeccb9';;
	sa-east-1* )      AMI='ami-51d0553d';;
	*) echo "ERROR: No AMI for zone $ZONE"
	   exit 1;;
    esac
    
    # Create an Instance
    INSTANCE=`aws ec2 run-instances --image $AMI --placement "AvailabilityZone=$ZONE" --count 1 --instance-type t1.micro --key-name ec2-backup --output text --region $REGION | awk -F '[\t]' '/INSTANCES/{print $8}'`
    sleep 40
    DNS=`aws ec2 describe-instances --filter "Name=instance-id,Values=$INSTANCE" --query "Reservations[*].Instances[*].PublicDnsName" --output text --region $REGION`
    
    # Attach the Volume
    OUTPUT=`aws ec2 attach-volume --device "/dev/sdz" --instance-id $INSTANCE --volume-id $VOLUME --output text --region $REGION | grep error`
    if [ -z "$OUTPUT" ]; then
	sleep 40
	# SSH There & Display Disk Label
	ssh -q $DNS "/sbin/disklabel /dev/xbd2"

	#d_disk_label=mount | grep -Eo "^/dev/(\w+)" | grep -Eo "\w+$" | xargs -L 1 disklabel
    else
	echo "ERROR: Failed to attach Volume $ to instance $"
	RES=`aws ec2 terminate-instances --instances-ids $INSTANCE --region $REGION --output text`
	exit 1
    fi
    
}

if [ -z $1 ]; then
    phelp 1
fi

case "$1" in
    "-h" ) phelp 0;;
    "-v" )
	if [ -z $2 ]; then
	    echo "ERROR: No volume id provided. Please Provide a volume id"
	    phelp 1
	fi
	dothething $2
	;;
    *) echo "ERROR: Unrecognized Parameter $1."
       phelp 1;;
esac