Beanstalk gRPC communication failure

Hello,

Please try this solution it will be helpful for you.

To set up gRPC communication on AWS Elastic Beanstalk with an Application Load Balancer (ALB), first ensure your gRPC server is correctly configured to use HTTP/2 and is listening on the appropriate port (Ex. 50051). Deploy your application to Elastic Beanstalk, then create an ALB with HTTPS listener on port 443 and, optionally, an HTTP listener on port 80 for redirection. Create a target group with HTTP protocol, port 80, and set the protocol version to gRPC. Register your EC2 instances as targets and link this target group to your ALB's HTTPS listener. Make sure security groups for both the ALB and EC2 instances allow traffic on ports 80 and 443. Configure Nginx on your Elastic Beanstalk instances to handle HTTP/2 and gRPC by creating an .ebextensions configuration file that sets up the necessary server blocks. Re-deploy your application to apply these changes. Finally, test the setup using a gRPC client to ensure proper communication, and monitor logs in the Elastic Beanstalk console to troubleshoot any issues.

Please look at AWS Document Link you will get more information.

https://aws.amazon.com/blogs/aws/new-application-load-balancer-support-for-end-to-end-http-2-and-grpc

https://docs.aws.amazon.com/whitepapers/latest/microservices-on-aws/grpc-based-communication.html

https://medium.com/swlh/running-an-http-grpc-python-server-concurrently-on-aws-elastic-beanstalk-8524d15030e5