Can i configure Alerts in Opensearch Serverless, i dont get an option to do that

Amazon OpenSearch Serverless does not support the built-in alerting feature that is available in Amazon OpenSearch Service managed clusters. The alerting functionality you're looking for in the dashboards is not available for serverless collections.

However, you can still monitor your OpenSearch Serverless collections and set up alerts using Amazon CloudWatch. CloudWatch provides comprehensive monitoring capabilities where you can:

• Monitor key metrics such as IndexingOCU, SearchOCU, IngestionRequestLatency, SearchRequestLatency, IngestionRequestErrors, and SearchRequestErrors
• Create CloudWatch alarms based on these metrics with custom thresholds
• Configure notifications through Amazon SNS when alarms are triggered
• Set up CloudWatch dashboards to monitor multiple resources in a unified view

This approach gives you a proactive alerting system for your OpenSearch Serverless collections, allowing you to monitor performance, identify issues, and receive notifications when specific conditions are met. You can create these alarms through the AWS Management Console, AWS CLI, or CloudFormation templates.

While this is different from the native alerting feature in OpenSearch Service managed clusters, CloudWatch monitoring provides effective alerting capabilities for serverless collections.
Sources
Configuring alerts in Amazon OpenSearch Service - Amazon OpenSearch Service
Amazon OpenSearch Serverless monitoring: A CloudWatch setup guide | AWS Big Data Blog