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pulumi / pulumi-aws

An Amazon Web Services (AWS) Pulumi resource package, providing multi-language access to AWS
Apache License 2.0
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Creating a replication group using an available Redis cache cluster #2532

Open m-ahsan-nazer opened 1 year ago

m-ahsan-nazer commented 1 year ago

Hi,

We have an existing Elasticache Redis Cluster (cluster mode disabled, single node). We want to add a second read replica node to this existing cluster. The AWS documentations https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/Replication.CreatingReplGroup.ExistingCluster.html explain that it is a two step process (1) create a replication group and pass the existing cluster via --primary-cluster-id (2) Create a new replica cluster that references the existing cluster and replication group.

The problem is we can't find a way to pass --primary-cluster-id to the ReplicationGroup in Pulumi. I found the comment " Note: We currently do not support passing a primaryClusterId in order to create the Replication Group." in https://github.com/pulumi/pulumi-aws/blob/master/sdk/nodejs/elasticache/replicationGroup.ts . I am assuming the Python version can't handle this either.

What is the solution to this? A solution that does not involve building a replication group from scratch.

mikhailshilkov commented 1 year ago

Hi @m-ahsan-nazer thank you for opening this issue.

Indeed, as you noticed, this is not currently supported, regardless of which language you use. I don't have a workaround ready for you either... I suspect you'd have to do this operation outside of Pulumi and then import the resulting resources.

The issue is tracked upstream in https://github.com/hashicorp/terraform-provider-aws/issues/20657