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Lambda Times Out When Getting Object from S3

 I had the issue where Lambda function launched in private network times out when trying to get object from S3 bucket. Typically, there are two solutions: Use S3 VPC endpoint (either gateway or interface) since it resolves s3 endpoint to private IP. Attach public IP. This is done using NAT Gateway with Elastic IP (EIP). The problem is, in my case, the S3 bucket is in different region, different account, than the Lambda function while the first solution, even though S3 is a global service, the VPC endpoint can't resolve to S3 in different region. In short, the first solution only works when S3 bucket and Lambda function are in the same region. That left us with solution 2 which is more expensive but works. Also I need to make sure that the S3 bucket policy allows cross account access.
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OpenSearch Container Unreachable in ECS

So, I have to launch Opensearch in ECS. And I need to add persistent storage. The container ran fine but it threw AccessDeniedException. And even though the container ran, my application was unable to connect to it.  After few tries, I found out that it is due to the permission of the directory where the data are supposed to reside. The container runs in ECS on EC2. The path, in this case, I use /usr/share/opensearch/data on EC2 is owned by root, but the container runs as ec2-user. So, I had to update the user data field on the launch template (since I used ASG) to include the following commands: mkdir -p /usr/share/opensearch/data sudo chown 1000:1000 /usr/share/opensearch/data That fixed the exception and the reachability issue.
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Sentinel One Strikes Again. No internet connection. Uninstall Sentinel One Agent.

This happened to a co-worker of mine a while back when his test application file was marked as suspicious by Sentinel One antivirus and had his internet on his laptop disabled. Today, it happened to me without any suspicious file. Probably suspicious activity, who knows. On Microsoft Edge, it says "Hmmm... your Internet access is blocked.", "Firewall or antivirus software may have blocked the connection", and "ERR_NETWORK_ACCESS_DENIED". So, I worked with my IT to uninstall the agent, but uninstalling is not without a fight. Here are the steps that I took: Since it is a Windows 11 machine with Bitlocker, I have to first get the Bitlocker key. From command prompt run: manage-bde -protectors -get C: After I verified it is the same key that the IT has, I saved the key outside of the machine. Then go to system configuration by searching for "sysconfig" or run msconfig. Under "boot" tab, check the "Safe boot" option, then click ...
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Error When Generating OpenAPI Documents: Missing required option '--project'

After I installed Microsoft.Extensions.ApiDescription.Server package, I encountered the following error message when I attempted to generate OpenAPI documents at build-time on .NET 9. Missing required option '--project' The command "dotnet "..."" exited with code 1 Apparently, it was due to end slash on my attempt to change the output directory. On my csproj file, I have the following entry: <PropertyGroup> <OpenApiDocumentsDirectory>../directory/</OpenApiDocumentsDirectory> </PropertyGroup> It works correctly after I removed the end slash: <PropertyGroup> <OpenApiDocumentsDirectory>../directory</OpenApiDocumentsDirectory> </PropertyGroup>
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Logitech Mouse and Keyboard do not Work

I found a Logitech mouse and keyboard combo on clearance. The model is MK470 and it looks returned. For the steep discounted price, I decided to give a try. Expectedly, it didn't work, so that starts my troubleshooting. Battery is fine, no on/off button on keyboard, both mouse and keyboard are not working, no sign of damage, dongle is properly inserted into the USB port. Short while later, I found that Logitech has a neat Connection Utility software . I downloaded it and ran it twice, once to reconnect the mouse and once for the keyboard. My guess is the frequency and channel somehow was not lining up between the mouse and keyboard and the dongle. The previous buyer probably returned it because they were not working. But the connection is finally restored.
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AWS Cognito Error on Sign Up

I was exploring AWS Cognito for authentication. It works great, but I got the following error message after I tested the sign up process: An error was encountered with the requested page. I found out later that I misunderstood the AutoVerifiedAttributes field in my CloudFormation. I thought it would mark an email or phone number as verified without actually verifying them. Apparently, it means it will try to verify either email or phone number. So, when I set it to email, it sent a verification email and the sign up process went without error.
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ASP.NET Application Crashed without Error Message

I encountered a strange error with ASP.NET Web API application. It runs fine locally, but when we deployed to Kubernetes cluster, it crashed as soon as it starts. And no error message was thrown. So, I pulled the application to my local and it crashed as well no matter how I run it, dotnet cli, Docker Desktop, Visual Studio debug. The only one that runs fine is the version from the repo. At this point, there are only two possibilities, either the environment is the issue or the application is the issue, so I decided to deploy it to a different environment and it's still not working, so it must be something with the application. Since it is the application, I tried to change the log level to Trace to get more information but no new error message that provides a hint on what's going on. Memory dump didn't work as the collector didn't have enough time to collect before the application crashed. At the end, I decided to approach this the hard way. So, in my local, there are ...
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