Amazon OpenSearch Service Scale-up Does Not Cause Downtime

Tadashi Shigeoka ·  Sat, June 25, 2022

I’ll introduce the topic that scaling up Amazon OpenSearch Service does not cause downtime.

AWS | Amazon Web Services

Background: Request size exceeded 10485760 bytes

I hit the maximum HTTP request payload size limit for Amazon OpenSearch Service and encountered a Request size exceeded 10485760 bytes error, so I decided to temporarily scale up.

ネットワークの制限 - Amazon OpenSearch Service の制限 - Amazon OpenSearch Service

No Downtime When Scaling Amazon OpenSearch Service Domain

While the AWS official FAQ stated as follows, when I tried it in practice, no downtime occurred.

Q: Amazon OpenSearch Service ドメインをスケーリングするにはダウンタイムが必要ですか?

いいえ。インスタンスおよびストレージボリュームの追加/変更オペレーションはオンラインで行うことができ、Amazon OpenSearch Service ドメインのスケーリングにダウンタイムは必要ありません。

Quote from: Amazon OpenSearch Service に関するよくある質問 – Amazon Web Services

Above, I learned through practice that scaling up Amazon OpenSearch Service does not cause downtime.

That’s all from the Gemba.