DailyAMI Backup

DailyAMI.sh

#!/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/opt/aws/bin
EC2_HOME=/opt/aws/apitools/ec2-1.7.3.0/
JAVA_HOME=/usr/lib/jvm/jre
export EC2_HOME JAVA_HOME

instanceID=`curl http://169.254.169.254/latest/meta-data/instance-id`
echo "$instanceID"
region=`curl http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\" '{print $4}'`
echo "$region"

amiNamePrefix="AMI_"

# Your prefer AMI Description
amiDescription="Daily AMI backup"

# Setup AMI Name
amiName=$amiNamePrefix
# Get AMI ID
amiIDs=$(ec2-describe-images --region $region | grep 'ami-[a-z0-9]' | grep "$amiName" |cut -f 2)

# Get Snapshot ID
if [[ ! -z $amiIDs ]]; then
	snapshotIDs=$(ec2-describe-snapshots --region $region | grep $amiIDs | cut -f 2)
fi
	
if [[ ! -z $amiIDs ]]; then
    # Deregister AMI
    for amiID in $amiIDs
    do
        ec2-deregister --region $region $amiID
    done

    # Delete snapshot
    for snapshotID in $snapshotIDs
    do
        ec2-delete-snapshot --region $region $snapshotID
    done
fi

# Create AMI
ec2-create-image $instanceID --region $region --name "$amiName" -d "$amiDescription" --no-reboot