AWS Lambda Functions

AWS Lambda functions for automating routine cloud operations including EBS volume backups, RDS cross-region disaster recovery, and snapshot lifecycle management.

Lambda Functions

Function	Description
backupvolume.py	Automated EBS volume snapshots with tag-based selection
prunevolume.py	Snapshot retention cleanup to manage storage costs
snapshot_creation.py	RDS automated snapshot creation
copy_snapshot.py	Cross-region RDS snapshot replication for DR
resotring_snapshot.py	RDS instance restoration from snapshot
pruning_snapshot.py	RDS snapshot retention and lifecycle management

Architecture

CloudWatch Events (Schedule)
        │
        ▼
   AWS Lambda ──► EBS Snapshots / RDS Snapshots
        │
        ▼
   SNS Notifications (Optional)

Project Structure

.
├── lambdafunctions/
│   ├── Automating Backups using AWS Lambda/
│   │   ├── backupvolume.py      # Create EBS snapshots
│   │   └── prunevolume.py       # Clean up old snapshots
│   └── RDS failover/
│       ├── snapshot_creation.py  # Create RDS snapshots
│       ├── copy_snapshot.py      # Cross-region copy
│       ├── resotring_snapshot.py # Restore from snapshot
│       └── pruning_snapshot.py   # Retention cleanup
├── iam/
│   ├── iam_role_ebs.json        # IAM role for EBS Lambda
│   └── iam_rds.json             # IAM role for RDS Lambda
└── images/                       # Architecture diagrams

Prerequisites

• AWS account with Lambda, EBS, RDS, CloudWatch, and IAM permissions
• Python 3.9+ runtime (AWS Lambda)
• AWS CLI configured for deployment

Quick Start

1. Create the IAM role using the policies in iam/:

   aws iam create-role --role-name LambdaEBSBackup \
     --assume-role-policy-document file://iam/iam_role_ebs.json

2. Deploy a Lambda function (example: EBS backup):

   cd "lambdafunctions/Automating Backups using AWS Lambda"
   zip backupvolume.zip backupvolume.py
   
   aws lambda create-function \
     --function-name EBSBackup \
     --runtime python3.9 \
     --handler backupvolume.lambda_handler \
     --role arn:aws:iam::YOUR_ACCOUNT:role/LambdaEBSBackup \
     --zip-file fileb://backupvolume.zip

3. Schedule with CloudWatch Events:

   aws events put-rule --name DailyEBSBackup \
     --schedule-expression "rate(1 day)"

Configuration

• EBS Backup: Tag your volumes with Backup: true to include them in automated snapshots
• RDS DR: Configure the source and destination regions in the Lambda environment variables
• Retention: Set RETENTION_DAYS environment variable to control snapshot cleanup

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

License

Apache 2.0

Author

Hammad Haqqani - DevOps Architect & Cloud Engineer

• Website: hammadhaqqani.com
• LinkedIn: linkedin.com/in/haqqani
• Email: phaqqani@gmail.com

---

Support

If you find this useful, consider buying me a coffee!