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Using Backbeat

Manually Set Up Replication

This guide walks through the steps to set up replication manually on a source and target environment.

It assumes:

  • A source environment at http://node1
  • A target environment at http://node6
  • An AWS profile backbeat-source in the 'us-east-1' region
  • An AWS profile backbeat-target in the 'us-east-1' region
  • That we want to set up a bucket source-bucket to replicate to another bucket target-bucket

Create Roles

Create a file, backbeat-role-trust-policy.json, with the following content:

{
    "Version":"2012-10-17",
    "Statement":[
        {
            "Effect":"Allow",
            "Principal":{
                "Service":"backbeat"
            },
            "Action":"sts:AssumeRole"
        }
    ]
}

The next steps use the Amazon Resource Name (ARN) value from each command's output.

Create the role on the source environment:

aws iam create-role \
--role-name SourceRoleForS3Replication \
--assume-role-policy-document file://backbeat-role-trust-policy.json \
--endpoint http://node1:8600 \
--profile backbeat-source

The output will resemble:

{
    "Role": {
        "AssumeRolePolicyDocument": {...},
        "RoleId": "...",
        "CreateDate": "...",
        "RoleName": "...",
        "Path": "...",
        "Arn": "arn:aws:iam::668546647514:role/SourceRoleForS3Replication"
    }
}

Create the role on the target environment:

aws iam create-role \
--role-name TargetRoleForS3Replication \
--assume-role-policy-document file://backbeat-role-trust-policy.json \
--endpoint http://node6:8600 \
--profile backbeat-target

This output will resemble:

{
    "Role": {
        "AssumeRolePolicyDocument": {...},
        "RoleId": "...",
        "CreateDate": "...",
        "RoleName": "...",
        "Path": "...",
        "Arn": "arn:aws:iam::779657758625:role/TargetRoleForS3Replication"
    }
}

Save each role's ARN value from the above commands' output (the field Arn). These are required to set up the replication configuration on a bucket in a later step. In this example, the source role ARN is arn:aws:iam::668546647514:role/SourceRoleForS3Replication and the target role ARN is arn:aws:iam::779657758625:role/TargetRoleForS3Replication.

Create and Attach Policies

Create an S3-role-permissions-policy.json file with the following content:

{
   "Version":"2012-10-17",
   "Statement":[
        {
            "Effect":"Allow",
            "Action":[
                "s3:GetObjectVersion",
                "s3:GetObjectVersionAcl"
            ],
            "Resource":[
                "arn:aws:s3:::source-bucket/*"
            ]
        },
        {
            "Effect":"Allow",
            "Action":[
                "s3:ListBucket",
                "s3:GetReplicationConfiguration"
            ],
            "Resource":[
                "arn:aws:s3:::source-bucket"
            ]
        },
        {
            "Effect":"Allow",
            "Action":[
                "s3:ReplicateObject",
                "s3:ReplicateDelete"
            ],
            "Resource":"arn:aws:s3:::target-bucket/*"
        }
   ]
}

The next steps use the Amazon Resource Name (ARN) value from each command's output.

Create the policy on the source environment:

aws iam create-policy \
--policy-name SourcePolicyForS3Replication  \
--policy-document file://S3-role-permissions-policy.json \
--endpoint http://node1:8600 \
--profile backbeat-source

The output will resemble:

{
    "Policy": {
        "PolicyName": "...",
        "CreateDate": "...",
        "AttachmentCount": ...,
        "IsAttachable": ...,
        "PolicyId": "...",
        "DefaultVersionId": "...",
        "Path": "...",
        "Arn": "arn:aws:iam::668546647514:policy/SourcePolicyForS3Replication",
        "UpdateDate": "..."
    }
}

Use the policy's ARN (in the Arn field) to attach the policy to the source role:

aws iam attach-role-policy \
--role-name SourceRoleForS3Replication \
--policy-arn arn:aws:iam::668546647514:policy/SourcePolicyForS3Replication \
--endpoint http://node1:8600 \
--profile backbeat-source

Create the policy on the target environment:

aws iam create-policy \
--policy-name TargetPolicyForS3Replication  \
--policy-document file://S3-role-permissions-policy.json \
--endpoint http://node6:8600 \
--profile backbeat-target

The output will resemble:

{
    "Policy": {
        "PolicyName": "...",
        "CreateDate": "...",
        "AttachmentCount": ...,
        "IsAttachable": ...,
        "PolicyId": "...",
        "DefaultVersionId": "...",
        "Path": "...",
        "Arn": "arn:aws:iam::779657758625:policy/TargetPolicyForS3Replication",
        "UpdateDate": "..."
    }
}

Use the policy's ARN (the Arn field) to attach the policy to the target role:

aws iam attach-role-policy \
--role-name TargetRoleForS3Replication \
--policy-arn arn:aws:iam::779657758625:policy/TargetPolicyForS3Replication \
--endpoint http://node6:8600 \
--profile backbeat-target

Create and Configure Buckets

Create the buckets:

aws s3api create-bucket \
--bucket source-bucket \
--endpoint http://node1 \
--profile backbeat-source && \
aws s3api create-bucket \
--bucket target-bucket \
--endpoint http://node6 \
--profile backbeat-target

Enable versioning on the buckets:

aws s3api put-bucket-versioning \
--bucket source-bucket \
--versioning-configuration Status=Enabled \
--endpoint http://node1 \
--profile backbeat-source && \
aws s3api put-bucket-versioning \
--bucket target-bucket \
--versioning-configuration Status=Enabled \
--endpoint http://node6 \
--profile backbeat-target

Define a replication configuration for the source bucket using role ARNs, formatting the Role field as a comma-separated string: "<source-role-ARN>,<target-role-ARN>". See the example below.

Create a replication-configuration.json file with the following content:

{
    "Role": "arn:aws:iam::668546647514:role/SourceRoleForS3Replication,arn:aws:iam::779657758625:role/TargetRoleForS3Replication",
    "Rules": [
        {
            "Prefix": "",
            "Destination": {
                "Bucket": "arn:aws:s3:::target-bucket"
            },
            "Status": "Enabled"
        }
    ]
}

Set the replication configuration on the source bucket:

aws s3api put-bucket-replication \
--bucket source-bucket \
--replication-configuration file://replication-configuration.json \
--endpoint http://node1 \
--profile backbeat-source

Replicate an Object

Put an object to replicate:

aws s3api put-object \
--bucket source-bucket \
--key object-to-replicate \
--endpoint http://node1 \
--profile backbeat-source

After some time, the object's ReplicationStatus will be 'COMPLETED'.

Confirm that the object has been replicated:

aws s3api head-object \
--bucket source-bucket \
--key object-to-replicate \
--endpoint http://node1 \
--profile backbeat-source

Confirm that the target object's ReplicationStatus is 'REPLICA':

aws s3api head-object \
--bucket target-bucket \
--key object-to-replicate \
--endpoint http://node6 \
--profile backbeat-target