Here’s a script that scans all EFS systems in several AWS accounts and regions and randomly assigns backup tags to EFS systems that are missing backup tags. This is assuming EFS is using AWS Backup service using tags to apply backup policies. If there are no backup tags, an EFS gets assigned a randomly picked backup policy.
#!/bin/bash # log file output="test.log" tmpfil="temp.txt" # empty file > $output # set random array arr[0]="efs-0000" arr[1]="efs-0400" arr[2]="efs-0800" arr[3]="efs-1200" arr[4]="efs-1600" arr[5]="efs-2000" rand=$[ $RANDOM %6 ] backup=${arr[$rand]} # set accounts and regions declare -a account=("default" "one" "two" "three" "four" "five") declare -a region=("us-east-1" "us-east-2" "us-west-1" "us-west-2") for i in "${account[@]}"; do echo "===================" >> $output echo $i >> $output echo "===================" >> $output for j in "${region[@]}"; do echo $j >> $output aws efs describe-file-systems \ --query "FileSystems[*].[FileSystemId,Tags[?Key=='aws-backup']|[0].Value]" \ --profile $i \ --region $j \ --output text > $tmpfil while read -r id tag; do if [[ $tag == "" ]]; then aws efs tag-resource \ --resource-id $id \ --tags Key="aws-backup",Value=${arr[$rand]} \ --profile $i \ --region $j >> $output echo "Added backup tag $backup to $id" >> $output elif [[ $tag == "no-backup" ]]; then echo "Backup tag is already set to no-backup on $id." >> $output else echo "No backup tag changes applied to $id." >> $output fi done < $tmpfil done done rm $tmpfil |