May 14 02:14:01 prod-web-04 sshd[14202]: Failed password for root from 192.168.1.45 port 54322 ssh2 May 14 02:14:05 prod-web-04 sshd[14202]: Accepted password for root from 192.168.1.45 port 54322 ssh2 May 14 02:14:06 prod-web-04 systemd[1]: Starting User Manager for UID 0… May 14 02:14:06 prod-web-04 systemd-logind[645]: New session 142 of user root. whoami root uname -a Linux … Read more
INCIDENT REPORT #882-B: Why our heap looks like a disaster zone. DATE: October 14, 2023 TO: Engineering Lead, CTO, and anyone else who thinks “it’s just a script” FROM: Senior Systems Engineer (Level 4, Infrastructure) SUBJECT: Post-Mortem of the Node-04 Memory Exhaustion Event (Python 3.11.4) SYSTEM INCIDENT LOG: 2023-10-12T03:14:22Z 03:14:22 – CRITICAL – kernel: [99283.12] … Read more
POST-MORTEM: THE BLACK SUNDAY CATASTROPHE TIMESTAMP: 2024-05-19 04:12:09 UTC INCIDENT DURATION: 72 Hours, 14 Minutes STATUS: Partially Restored / Total Mental Collapse OPERATOR: Senior SRE (Employee #402, currently fueled by spite and expired Ibuprofen) 1. Summary of the Carnage At 04:00 UTC on Sunday, while the rest of the world was sleeping or having a … Read more
TIMESTAMP: 03:14 AM. The pagers started screaming, and that’s when I realized nobody in this building actually knows what is devops. My eyes are vibrating. I’ve been awake for forty-eight hours, fueled by lukewarm espresso and the bitter realization that our “cloud-native” architecture is actually just three raccoons in a trench coat holding a soldering … Read more
Python 3.13 brings many new features, performance improvements, and bug fixes, making it a desirable upgrade for developers. However, upgrading Python on Ubuntu, especially on long-term support (LTS) versions like 20.04 and 22.04, requires careful steps to avoid breaking system dependencies. In this guide, we will walk you through the process of upgrade to Python … Read more
In today’s fast-paced world of cloud-native development, microservices architecture has become the standard for building scalable and maintainable applications. Managing these microservices on Kubernetes can be complex, but with Argo CD, you can simplify deployment and continuous delivery through a GitOps approach. This guide will walk you through the process of installing and configuring Argo … Read more
In today’s fast-paced development landscape, microservices architecture has become a go-to approach for building scalable and maintainable applications. However, deploying a microservices-based application can be complex, especially when considering factors like scalability, orchestration, and resilience. Kubernetes, an open-source container orchestration platform, has emerged as the preferred choice for managing microservices in production environments. In this … Read more
In the ever-evolving landscape of cloud computing, serverless architecture has emerged as a transformative approach that is reshaping how applications are developed and deployed. As businesses increasingly seek agility, scalability, and cost efficiency, serverless computing offers a compelling solution that addresses these needs while simplifying the development process. In this blog post, we’ll explore the … Read more
In this article, we will upgrade to Python 3.12 and configure it as the default version of Python in Ubuntu 20.04 and 22.04 LTS. The current stable version of Python was released on 02 October 2023. Many Ubuntu users are facing problems when upgrading Python to the latest version. Python 3.10 is available as default when we install Ubuntu 22.04 … Read more
Introduction Kubernetes has rapidly become the de facto standard for container orchestration, powering modern, scalable, and reliable applications. Managing Kubernetes clusters and workloads effectively is crucial, and one of the most essential tools in a Kubernetes administrator’s arsenal is kubectl. In this article, we will go over the Kubectl Cheat Sheet you ever need. This … Read more