(elasticsearch) instance type and ebs validation doesn't distinguish data and master node during domain creation.

When trying to create Elasticsearch domain with master node type c5.2xlarge.elasticsearch, data node type i3.2xlarge.elasticsearch, with ebs disabled, cdk throws exception says

throw new Error('EBS volumes are required when using instance types other than r3 or i3.');

If I enable ebs, it throws exception:

throw new Error('I3 instance types do not support EBS storage volumes.');

The version I am using is 1.76.

From API reference, the ebs suppose to be only attached to master node in my case, however the validation couldn’t distinguish data node and master node. With my instance config, it thinks c5 should have ebs, but i3 shouldn’t.

c5 is recommended for master node, and i3 for data node. With this bug, there is no way to use CDK to create Elasticsearch domain with master nodes.

[iliapolo]

@AlvinMengCao Thanks.

You’re right, seems like the console does make this distinction and your configuration is valid:

We will look into it, might indeed be a CloudFormation only validation.

Thanks for reporting!

[jamiepeloquin]

If there is a way to +1 this issue, I would like to add mine. We are using i3 for data nodes, and m5 for masters. The current ES Domain construct does not allow for this mix – and unfortunately it is one we already have in production. This was originally created without issue using the cfnDomain construct, so I am not at all sure how this construct missed that you can define data and master nodes separately. @iliapolo Thank you for your workaround, but this bug has now been around for several months, is there any update?