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Modifying a cluster - Amazon Redshift
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, see the blog post that was published on June 30, 2025.

Modifying a cluster

When you modify a cluster, changes to the following options are applied immediately:

  • VPC security groups

  • Publicly accessible

  • Admin user password

  • HSM Connection

  • HSM Client Certificate

  • Maintenance detail

  • Snapshot preferences

Changes to the following options take effect only after the cluster is restarted:

  • Cluster identifier

    Amazon Redshift restarts the cluster automatically when you change Cluster identifier.

  • Enhanced VPC routing

    Amazon Redshift restarts the cluster automatically when you change Enhanced VPC routing.

  • Cluster parameter group

  • IP address type

    This feature is only available in the Amazon GovCloud (US-East) and Amazon GovCloud (US-West) Regions. For more information on Amazon Regions, see Regions and Availability Zones.

If you decrease the automated snapshot retention period, existing automated snapshots whose settings fall outside of the new retention period are deleted. For more information, see Amazon Redshift snapshots and backups.

For more information about cluster properties, see Additional configurations.

To modify a cluster

  1. Sign in to the Amazon Web Services Management Console and open the Amazon Redshift console at https://console.amazonaws.cn/redshiftv2/.

  2. On the navigation menu, choose Clusters.

  3. Choose the cluster to modify.

  4. Choose Edit. The Edit cluster page appears.

  5. Update the cluster properties. Some of the properties you can modify are:

    • Cluster identifier

    • Snapshot retention

    • Cluster relocation

    To edit settings for Network and security, Maintenance, and Database configurations, the console provides links to the appropriate cluster details tab.

  6. Choose Save changes.