AWS CDK Redshift Alpha

2.250.0a0 · active · verified Fri Apr 17

The `aws-cdk-aws-redshift-alpha` library provides AWS Cloud Development Kit (CDK) constructs for defining AWS Redshift resources. As an 'alpha' module, it's under active development, offering early access to features not yet available in the stable `aws-cdk-lib`. The current version is `2.250.0a0`, aligning with the main CDK v2 release train, with frequent updates corresponding to new CDK core versions.

Common errors

```
ModuleNotFoundError: No module named 'aws_cdk.aws_redshift'
```
cause Attempting to import a stable L2 construct for Redshift when only the alpha version is available, or forgetting the `_alpha` suffix.

fix Use the correct alpha import path: `from aws_cdk import aws_redshift_alpha as redshift_alpha`.
```
AttributeError: module 'aws_cdk.aws_redshift_alpha' has no attribute 'Cluster'
```
cause The `Cluster` class might have been renamed or removed in a breaking alpha release, or you're using an outdated version of the library.

fix Consult the latest `aws-cdk-aws-redshift-alpha` API documentation for the current class names and update your `aws-cdk-aws-redshift-alpha` package to the newest version via `pip install --upgrade aws-cdk-aws-redshift-alpha`.
```
Error: The stack named 'MyRedshiftStack' failed to deploy: CREATE_FAILED (ResourceAlreadyExistsException)
```
cause A Redshift cluster with the same identifier already exists in your account/region, preventing CDK from creating a new one.

fix Change the `id` of your `redshift_alpha.Cluster` construct or manually delete the existing Redshift cluster that conflicts with your stack's logical ID.

Warnings

breaking As an 'alpha' module, `aws-cdk-aws-redshift-alpha` APIs are subject to change without notice, even in minor CDK releases. Avoid using it for production workloads requiring stable APIs.
Fix: Be prepared for frequent updates and refactoring. For production, consider using `CfnCluster` (L1 construct) from `aws-cdk-lib.aws_redshift` for stability, or wait for a stable L2 construct.
gotcha Redshift cluster creation and deletion can take a significant amount of time (15-30+ minutes). Be mindful of this during development and testing cycles.
Fix: Plan your deployment and deletion windows accordingly. For rapid iteration, consider simpler, less resource-intensive services or use `SINGLE_NODE` clusters.
gotcha Redshift clusters can incur significant costs, especially with multi-node and larger instance types. Ensure you understand the pricing model and remember to delete clusters when no longer needed.
Fix: Always use `cdk destroy` to tear down resources after testing. Monitor your AWS billing. For quick tests, use `SINGLE_NODE` and `DC2_LARGE` node types.
gotcha Correct VPC, subnet group, and security group configurations are critical for Redshift. Misconfigurations often lead to cluster creation failures or connectivity issues.
Fix: Ensure your VPC has sufficient subnets in multiple AZs. Verify security group rules allow ingress from intended sources (e.g., your IP, EC2 instances). Ensure your cluster subnet group spans private subnets if `publicly_accessible` is false.

Install

pip install aws-cdk-aws-redshift-alpha aws-cdk-lib Install library and core CDK

Imports

Cluster
wrong:
```
from aws_cdk.aws_redshift import Cluster
```
correct:
```
from aws_cdk import aws_redshift_alpha as redshift_alpha
# ... then use redshift_alpha.Cluster
```
Alpha modules live under `aws_cdk.aws_MODULENAME_alpha`. There is no direct `aws_cdk.aws_redshift` L2 construct in the main library yet, only L1 (CfnCluster).
Login
wrong:
```
from aws_cdk.aws_redshift_alpha import Login as RedshiftLogin
```
correct:
```
from aws_cdk import aws_redshift_alpha as redshift_alpha
# ... then use redshift_alpha.Login
```
While directly importing `Login` is technically possible, the idiomatic CDK alpha import pattern is to alias the entire `aws_redshift_alpha` module.

Quickstart

This quickstart defines a basic AWS CDK stack that provisions an AWS Redshift cluster within a new VPC. It uses single-node, DC2.LARGE instance types for a low-cost, quick-to-provision example. After saving this code to a file (e.g., `app.py`), you can run `python app.py` to synthesize the CloudFormation template, and then `cdk deploy` to provision the resources in your AWS account.

from aws_cdk import (
    App, Stack,
    aws_ec2 as ec2,
    aws_redshift_alpha as redshift_alpha,
)
from constructs import Construct

class RedshiftAlphaQuickstartStack(Stack):
    def __init__(self, scope: Construct, construct_id: str, **kwargs) -> None:
        super().__init__(scope, construct_id, **kwargs)

        # Create a VPC for the Redshift cluster
        vpc = ec2.Vpc(self, "RedshiftQuickstartVPC", max_azs=1)

        # Create an AWS Redshift Cluster using the alpha construct
        cluster = redshift_alpha.Cluster(self, "MyRedshiftQuickstartCluster",
            vpc=vpc,
            cluster_type=redshift_alpha.ClusterType.SINGLE_NODE, # Use SINGLE_NODE for a quicker, cheaper example
            node_type=redshift_alpha.NodeType.DC2_LARGE, # Use a smaller node type for example
            master_user=redshift_alpha.Login("admin"),
            db_name="quickstartdb",
            publicly_accessible=False
        )

# Instantiate the CDK App and synthesize the stack
app = App()
RedshiftAlphaQuickstartStack(app, "RedshiftAlphaQuickstartStack")
app.synth()
print("CDK Redshift Alpha quickstart stack synthesized successfully.")
# To deploy this stack: cdk deploy RedshiftAlphaQuickstartStack

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