In this series of articles, I will attempt to solve scenarios from the website "Sad Servers" and provide detailed explanations of the tasks and solutions. The website is described as "Like LeetCode for Linux", offering opportunities to train and improve debugging and operating skills with Linux.
Part 1 includes scenarios 1 to 11 (scenario 10 is locked behind a paywall and will be discussed in another article).
A few days ago, AWS open-sourced1 its Secrets Manager Agent, which is designed to help us users fetch secrets more easily and securely. Let's take a look at what it is, compare it with existing solutions, discuss its potential applications and limitations and how it may help us (or not) in our day-to-day operations.
Terraform, apart from being an incredible tool overall, is very good for managing IAM policies: it's straightforward, easy to maintain, and very flexible. I've seen a lot of guides on using Terraform for managing infrastructure in general and IAM specifically, but I haven't seen any implementing an important but not very common feature — validating IAM policy length. So I decided to create one.
Yet another reason why I love Linux is the ability to shoot myself in the leg and still be able to do something about it (or not). This approach allows very deep configuration and understanding of the system, but at the same time, it teaches users to be cautious of their actions. Today, I would like to tell a story about how I locked myself out of root access (easy) and fixed it afterward (not easy).
We all use git. We all are familiar with pull, push and commit commands and we don't give them too much thought apart from that. Like, what can possibly be complicated about a commit? But is it actually this simple and straightforward? Let's find out!
Yet another reason why I love Linux: everything is a file. Today I would like to talk about the files that help us to understand the health of our accumulator batteries.
To certify or not to certify? That is a complicated question. In this post, I will speculate on the topic and share my personal thoughts on certifications in general, specifically focusing on the CKA.
Git hooks are a very handy feature in development. However, because of their local nature, configuring them from a centralized repository perspective can be challenging. In this note, I aim to find a convenient solution to this problem.
There are a lot of posts in the internet regarding which program or tool does what in Linux systems. Usually it's a brief overview of the program's functionality, a few examples, and that's it. All from the objective point of view: what we want to achieve. But there aren't so many posts discussing the algorithms in which these programs can be used. So I decided to write a quick guide you can follow to determine whether there's a problem with a server and where it is.
I love bash. A tool as trivial as command line interface (CLI, or just console) holds so many secrets, that even after 9 years of experience I still sometime find something wonderful. But today I want to talk a bit about one of my favourite tricks — aliases.