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Create an AWS DMS replication instance – How to do

by | Aug 3, 2021

Wondering how to create an AWS DMS replication instance? We can help you!

We can create and modify a replication instance with AWS DMS console, the AWS Command Line Interface (AWS CLI), the AWS DMS API reference, or AWS CloudFormation.

Here at Bobcares, we often handle requests to create replication instance for our customers as a part of our Server Management Services.

Today let’s see how our Support Engineers do this for our customers.

How to Create an AWS DMS replication instance

Following are the steps to create an AWS DMS replication instance using the AWS DMS console:

1. Firstly,  we have to open the AWS DMS console, and go to Replication instances.

2. Then click on Create replication instance.

3. And configure the following parameters:

a) Name – Enter a name.

b) Description – Enter a description.

c) Instance class – Select the instance class.

d) Engine version – Select the engine version.

e) Allocated storage – AWS DMS doesn’t use a significant amount of storage because storage is primarily consumed by log files and cached transactions.

f) VPC – Select the virtual private cloud (VPC) that we wish the instance to be in.

g) Multi-AZ – Select Yes or No.

h) Publicly accessible – Select this option if we want the replication instance to be accessible from the internet.

4. After that go to the Advanced security and network configuration section, and configure the following:

a) Replication subnet group – Select the replication subnet group that we created.

b) Availability Zone – The Amazon Elastic Compute Cloud (Amazon EC2) Availability Zone where the replication instance will be created.

c) VPC security group(s) – Select a VPC security group that we wish to assign to the replication instance to manage the outbound traffic.

d) KMS master key – Select the encryption key to use to encrypt replication storage and connection information.

5. Next, we must go to Maintenance section and do the following:

a) Auto minor version upgrade – Select this option to apply minor engine upgrades to the replication instance automatically during the maintenance window.

b) Maintenance window – select this option to designate a weekly time range during which system maintenance can occur, in Universal Coordinated Time (UTC).

This will help us to manage when modification and software updates occur on the replication instance.

6. Finally, click on Create.

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To conclude, we saw the steps that our Support Techs follow for Creating AWS DMS replication instance.


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