.NET 6 webapi deployed to Azure App Service, logging to AWS Cloudwatch does not work.

Question

I've got a .NET 6 webapi hosted in an Azure AppService. I am using AWS.Logger.AspNetCore to log to AWS Cloudwatch. It is working when I run locally, but when I run in the deployed Azure AppService environment, I don't see any of the log messages in Cloudwatch.

In Program.cs I configure logging like so:

builder.Logging.AddAWSProvider();  

  
// Get AWS configuration  
var awsOptions = builder.Configuration.GetSection(AWSOptions.SectionName).Get

Answer 1

check your AWS firewall rules

Answer 2

Hi, @Pete Franklin

You're specifying an IAM user access key and secret, are they the same as localhost?
I recommend checking the IAM policy first.

Permission

The simplest possible cause is that he does not have the following permissions granted to his IAM user.

   logs: CreateLogGroup  
   logs: CreateLogStream  
   logs: PutLogEvents  
   logs: DescribeLogGroups  

https://github.com/aws/aws-logging-dotnet#aspnet-core-logging

Deny Condition

If the above permission is granted, does her IAM policy restrict her IP address or anything else?

https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_examples_aws_deny-ip.html

Answer 3

Hi there,

I faced a similar issue recently with my .NET 6 webapi on Azure AppService and AWS Logger. It can be quite frustrating when logs don't appear where you expect them to.

In your case, have you checked the Cloudwatch configuration and permissions in your Azure AppService environment? Sometimes, issues like this can be related to access permissions or network configurations.

By the way, if you're interested in improving your English language skills, you might find some helpful resources on "Ways to Say" at Microsoft's English Language Learning Center.

Hope this helps!