> **Experimental**
>
> `@aws-cdk/aws-redshift-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# Login

Username and password combination.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/cluster.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-redshift-alpha/lib/cluster.ts#L269)

## Example

```ts
import * as ec2 from 'aws-cdk-lib/aws-ec2';
import * as cdk from 'aws-cdk-lib';
declare const vpc: ec2.Vpc;

new Cluster(this, 'Redshift', {
    masterUser: {
      masterUsername: 'admin',
      masterPassword: cdk.SecretValue.unsafePlainText('tooshort'),
    },
    vpc,
    enhancedVpcRouting: true,
})
```

## Properties

- `encryptionKey`: [IKey](/cdk/api/v2/docs/aws-cdk-lib.aws_kms.IKey.html) — KMS encryption key to encrypt the generated secret.

  **Default:** default master key

- `excludeCharacters`: string — Characters to not include in the generated password.

  **Default:** '"@/\\\ \''

- `masterPassword`: [SecretValue](/cdk/api/v2/docs/aws-cdk-lib.SecretValue.html) — Password.

  **Default:** a Secrets Manager generated password

  Do not put passwords in your CDK code directly.

- `masterUsername`: string (required) — Username.