Configuring Object Replication to Another S3 Bucket

Configuring Object Replication to Another S3 Bucket

In this guide, we will configure object replication from one S3 bucket to another using Pulumi. Object replication allows you to automatically replicate objects between buckets, which can be useful for backup, disaster recovery, or data distribution.

Step-by-Step Explanation

Step 1: Create Source and Destination Buckets

First, we need to create the source and destination S3 buckets. These buckets will be used for object replication.

Step 2: Configure Bucket Replication

Next, we will configure the replication rules for the source bucket. This involves specifying the destination bucket and the IAM role that will be used for replication.

Step 3: Create IAM Role for Replication

We need to create an IAM role that grants the necessary permissions for replication. This role will be assumed by the S3 service to perform the replication.

Summary

In this guide, we created two S3 buckets and configured object replication between them. We also created an IAM role to grant the necessary permissions for replication. This setup ensures that objects in the source bucket are automatically replicated to the destination bucket.

Full Code Example

import * as aws from "@pulumi/aws";

// Create the source S3 bucket
const sourceBucket = new aws.s3.Bucket("sourceBucket", {
    acl: "private",
});

// Create the destination S3 bucket
const destinationBucket = new aws.s3.Bucket("destinationBucket", {
    acl: "private",
});

// Create an IAM role for replication
const replicationRole = new aws.iam.Role("replicationRole", {
    assumeRolePolicy: aws.iam.assumeRolePolicyForPrincipal({
        Service: "s3.amazonaws.com",
    }),
});

// Attach the necessary policy to the replication role
const replicationRolePolicy = new aws.iam.RolePolicy("replicationRolePolicy", {
    role: replicationRole.id,
    policy: sourceBucket.arn.apply(arn => \`{
        "Version": "2012-10-17",
        "Statement": [
            {
                "Effect": "Allow",
                "Action": [
                    "s3:GetReplicationConfiguration",
                    "s3:ListBucket"
                ],
                "Resource": [
                    "\${arn}"
                ]
            },
            {
                "Effect": "Allow",
                "Action": [
                    "s3:GetObjectVersion",
                    "s3:GetObjectVersionAcl"
                ],
                "Resource": [
                    "\${arn}/*"
                ]
            },
            {
                "Effect": "Allow",
                "Action": [
                    "s3:ReplicateObject",
                    "s3:ReplicateDelete",
                    "s3:ReplicateTags"
                ],
                "Resource": [
                    "\${destinationBucket.arn}/*"
                ]
            }
        ]
    }\`),
});

// Configure the replication rules for the source bucket
const replicationConfig = new aws.s3.BucketReplicationConfig("replicationConfig", {
    role: replicationRole.arn,
    rules: [{
        id: "replicationRule",
        status: "Enabled",
        destination: {
            bucket: destinationBucket.arn,
        },
    }],
    bucket: sourceBucket.id,
});

export const sourceBucketName = sourceBucket.bucket;
export const destinationBucketName = destinationBucket.bucket;
export const replicationRoleArn = replicationRole.arn;
export const replicationConfigId = replicationConfig.id;