Managing data redundancy and disaster recovery is critical in cloud environments. I will show you how to set up S3 Cross-Region Replication (CRR) using Pulumi — a modern Infrastructure as Code tool that lets you use familiar programming languages like Python to provision cloud resources.
What is S3 Cross-Region Replication (CRR)?
S3 CRR automatically replicates objects from one S3 bucket in a specific AWS region to another bucket in a different region. This ensures:
- High availability
- Improved disaster recovery
- Regional compliance requirements
Steps to Deploy S3 CRR with Pulumi
Setup Pulumi and AWS CLI
- Ensure AWS CLI is configured with appropriate IAM permissions.
- Install Pulumi:
curl -fsSL https://get.pulumi.com | sh
Define Infrastructure with Pulumi (Python)
The core of the project includes:
- Source S3 Bucket (e.g., us-east-1)
- Destination S3 Bucket (e.g., us-west-2)
- Replication Role & Policy
- Replication Configuration Pulumi uses aws.s3.Bucket and related resources to build this.
Deploy Infrastructure
In your terminal, navigate to your project directory and run:
pulumi up
This command:
- Creates both S3 buckets
- Sets up replication configuration
- Deploys necessary IAM roles
Test the Replication
- Upload objects to your source bucket via AWS Console or CLI.
- Pulumi-enabled CRR will automatically replicate the objects to your destination bucket.
Destroy Infrastructure
To remove all deployed resources:
pulumi destroy
Final Thoughts
By using Pulumi to automate S3 CRR:
- You simplify repetitive infrastructure tasks.
- Manage multi-region replication efficiently.
Pulumi’s ability to manage AWS resources through familiar programming makes it a powerful tool for DevOps Engineers seeking flexibility.
All project files are available here: GitHub Repository
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