Sep 17, 2025 · 4 min read · Linux is the backbone of modern computing—powering servers, cloud platforms, and DevOps pipelines. In interviews for DevOps, SRE, System Administration, and Cloud roles, Linux troubleshooting questions are a favorite. But here’s the secret: interview...
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Sep 6, 2025 · 4 min read · If the phrase “paged at 3 a.m.” brings back memories of mysterious app errors and dependency timeouts, DNS issues in Kubernetes probably played a starring role. Scaling clusters introduces DNS latency, frustrating outages, and debugging marathons, es...
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Aug 29, 2025 · 48 min read · 🔎 How to Recognize the Signs of a Phone That Won’t Power On Before jumping into troubleshooting, it’s important to correctly identify the signs that your phone is truly not powering on—and not just stuck in a temporary freeze or drained battery stat...
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Aug 28, 2025 · 3 min read · Today’s server story is about a failing database connection. A web application was trying to connect to PostgreSQL 13 on one of our servers, but the connection simply wouldn’t work. Let’s walk through the problem, the investigation, and the fix. The ...
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Mar 21, 2025 · 2 min read · Spent some time in the lab fine-tuning RSVP-TE over an MPLS Core in EVE-NG. The goal? Build a fully operational LSP across the service provider backbone, ensuring label switching and TE constraints work as expected. But... I ran into a classic issue:...
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Nov 11, 2024 · 2 min read · Check Disk Usage ~ Run the following command to identify which partitions are full: df -h ~ Look for the partition with 100% usage, usually /. Clear Temporary Files ~ Free up space by clearing temporary files: sudo rm -rf /var/tmp/* sudo rm -rf...
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Nov 10, 2024 · 2 min read · When running applications on Kubernetes with auto-scaling, you may experience 502 Gateway Errors, particularly when Pods are scaling in response to sudden traffic changes. Here’s how using terminationGracePeriodSeconds and preStop hooks in your Kuber...
Join discussionAug 10, 2024 · 2 min read · Frustrated when your terminal forgets your last location? I’ve been there! After revamping my terminal, I ran into the same hiccup. Let’s sort this out with a quick fix and ensure iTerm2 always picks up right where you left off! Before we get started...
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Jun 24, 2024 · 5 min read · Have you at any point experienced the strange 127.0.0.1:62893 blunder while exploring the advanced domain? You can definitely relax; you're in good company in this techno labyrinth! In this blog entry, we'll unwind the mysteries behind this confoundi...
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Mar 23, 2024 · 3 min read · Under normal circumstances, by following the key pair, and adding the public key to the remote server's ~/.ssh/authorized_keys, you can achieve password-less login. However, there may be unexpected situations. Recently, I encountered an issue where e...
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