EC2 Instance backup - auto backup for prod

Did you ever wonder how to automatically create a backup to only your prod (or some other) environment on Amazon ec2?

Well this is easy, all you need to do is to add a tag to the instances and set a cron job.

Copy the following script to your manage machine and replace the EC2 certs path ….. with your

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#!/bin/bash -x

##           Created by Shavit Netzer                                                  ##

##           This script will run every XXX time depend on you            ##

##           And will start backup depend on the Backup tag                ##

if [ -z $1 ]

 then

  echo "ERROR - need to provide params $0 WHEN[h,d,m]"

  exit

fi

export EC2_HOME=/path/to/your/ec2-api-tools

export JAVA_HOME=/path/to/your/jvm/java-6-sun-1.6.0.26

export EC2_PRIVATE_KEY=/path/to/your/pk-XXXX.pem

export EC2_CERT=/path/to/your/cert-XXXX.pem

export EC2_ID='XXXX'

export EC2_SECRET='XXXX'

export AWS_ELB_HOME=/path/to/your/ElasticLoadBalancing

export AWS_AUTO_SCALING_HOME=/path/to/your/AutoScaling

export AWS_CLOUDWATCH_HOME=/path/to/your/CloudWatch

listofinstances=""

if [ "$1" == "h" ]

 then

  listofinstances=`/usr/src/ec2-api-tools-1.4.4.2/bin/ec2-describe-instances --region us-east-1 | sed "s#\t#,#g;" | grep ^TAG | grep ",Backup," | grep h$`

fi

if [ "$1" == "d" ]

 then

  listofinstances=`/usr/src/ec2-api-tools-1.4.4.2/bin/ec2-describe-instances --region us-east-1 | sed "s#\t#,#g;" | grep ^TAG | grep ",Backup," | grep d$`

fi

if [ "$1" == "m" ]

 then

  listofinstances=`/usr/src/ec2-api-tools-1.4.4.2/bin/ec2-describe-instances --region us-east-1 | sed "s#\t#,#g;" | grep ^TAG | grep ",Backup," | grep m$`

fi

if [ "$listofinstances" != "" ]

 then

  tagnames=`/usr/src/ec2-api-tools-1.4.4.2/bin/ec2-describe-instances --region us-east-1 | sed "s#\t#,#g;" | grep ^TAG | grep ",Name,"`

  for instance in $listofinstances

   do

    instanceid=`echo $instance | awk -F, '{print $3}'`

    for tname in $tagnames

     do

      instancetag=`echo $tname | grep $instanceid`

      if [ "$instancetag" != "" ]

       then

                                echo "=== start $instanceid ==="

                                DATE=`date +%Y%m%d%H`

                                instancetagname=`echo $instancetag | awk -F, '{print $5}'`

                                underline="_"

                                echo "Create backup for instance $instanceid with name $instancetagname"

                                echo "/usr/src/ec2-api-tools-1.4.4.2/bin/ec2-create-image $instanceid --name $DATE$underline$instancetagname --description $DATE$underline$instancetagname --no-reboot"

                                ami1=`/usr/src/ec2-api-tools-1.4.4.2/bin/ec2-create-image $instanceid --name $DATE$underline$instancetagname --description $DATE$underline$instancetagname --no-reboot`

                                echo $ami1 | sed -e 's/IMAGE//' -e 's/ //g'

                                ami=`echo $ami1 | sed -e 's/IMAGE//' -e 's/ //g'`

                                echo "Adding TAG for the backup"

                                echo "/usr/src/ec2-api-tools-1.4.4.2/bin/ec2-create-tags $ami --tag Name=$DATE$underline$instancetagname"

                                /usr/src/ec2-api-tools-1.4.4.2/bin/ec2-create-tags $ami --tag Name=$DATE$underline$instancetagname

                                echo "=== end $instanceid ==="

      fi

    done

  done

fi