Posts

Introducing AWS Nuke! In this post I will give you a quick introduction to AWS Nuke, a tool developed in Golang that aims to delete all resources in an AWS account. This tool helped me a lot. Use Cases Cleaning Free Tier AWS Account This was a personal use-case, I created a free tier AWS Account some months ago and I’ve been using it for different purposes, some of the resources I created were via Terraform which made it simpler to delete the resources I created after using them, on the other hand, I created other resources manually without tracking them, some of them were costing me money!. So I prefered to delete everything in this account as I use it for learning purposes only. AWS Nuke is a great fit for this task. ...

In this post, I will present a solution (one I personally find quite tidy) to a problem I encountered with AWS SSO and the Serverless Framework. Serverless Framework is one of my favorite tools when I need to work with AWS Lambda and other serverless services, it is an alternative to AWS SAM, but personally, I prefer Serverless Framework due to its support for various cloud providers and plugins. Previously, I had used Serverless to access AWS API by configuring my ~/.aws/credentials file. However this time I was using AWS Single Sign-On to access AWS API from my local computer. Unfortunately, when I wanted to deploy some Lambda functions using the sls CLI, I was not able to do it, it shows a message saying the AWS profile I was using was not configured, even I logged in successfully a couple minutes ago. ...

Some time ago I was working on creating a local docker-based development environment for some microservices at work so developers can have the necessary infra components on their machines and that will help them with their daily tasks. Initially, the business logic of some microservices were a black box to me. After containerizing the applications and creating the docker-compose setup, some of them started failing and after checking the logs it turns out that the applications were using AWS SDK to get ec2 instance metadata. ...

It is possible when you are writing code, at some point you might need to pause the execution of a process by calling the sleep(NUMBER_OF_SECONDS) function depending on the problem you are solving. In this post, I will share what I learned so far while investigating the internal kernel mechanisms that make the sleep function work the way it does. I appreciate your feedback. I am not an expert on this topic as Linux Kernel’s internals are new for me, it was just my curiosity that drove me to get into kernel’s source code, and wanted to share what I learned. If you find something incorrect in this post, please let me know by opening an issue on this blog’s Github repository. I will really appreciate it!. ...

Hello, during the months of October and November different social and political conflicts occurred in Bolivia, this entry is not so much to discuss the political issue, it will be a 100% technical entry but it is related to those events. The previous week a large number of clients from a local ISP received an SMS with a link bit.ly to an MP4 video in Dropbox that was later deleted. ...