Amazon OpenSearch Service now lets you update cluster volume without blue/green

Amazon OpenSearch Service now lets you update cluster volume size, volume type, IOPS and throughput without requiring a blue/green deployment. This makes it easier for you to make changes to your EBS settings without having to plan upfront for a blue/green deployment.

Previously, when you updated volume size, volume type, IOPS and throughput on your domain, OpenSearch Service used a blue/green deployment mechanism to make the change. While blue/green deployments are meant to avoid any disruption to your clusters, as the deployment utilizes additional resources on the domain, it is recommended that you perform them during low traffic periods. Now, you can update volume related cluster configuration without requiring a blue/green deployment, ensuring minimal performance impact to your online traffic and avoiding any potential disruption to your cluster operations.

This feature is available for OpenSearch Service domains with current generation instances, and when the volume size per data node is within 3 TiB. Decreasing storage volume size, or making storage volume changes within short intervals will still require a blue/green deployment. You can use the dry-run option to check whether your change requires a blue/green deployment.

Support for volume update without requiring blue/green is available in all AWS Commercial and the AWS GovCloud (US) Regions where OpenSearch Service is available. See here for a full listing of our Regions. Get started with the AWS CLI or AWS Management Console. To learn more about Amazon OpenSearch Service, please visit the product page.

Feb 19, 2024: This has been updated based on customer feedback to clarify that decreasing storage volume size, or making storage volume changes within short intervals will still require a blue/green deployment.