DevOps Daily@thedevopsdaily

Your daily dose of DevOps. Guides, tutorials, and insights on Kubernetes, Docker, Terraform, CI/CD, and cloud - all in one place.

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Joined May 2018
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📝 @opentofuorg 1.13 Re-Encodes base64gzip and Drops WinRM. We Upgraded the Same State to See What Breaks OpenTofu 1.13 shipped on September 30. We applied configs with 1.12.7 and planned them with 1.13.1 a devops-daily.com/posts/opent… #DevOps #Terraform

OpenTofu 1.13 Re-Encodes base64gzip and Drops WinRM. We Upgraded the Same State to See What Breaks

OpenTofu 1.13 shipped on September 30. We applied configs with 1.12.7 and planned them with 1.13.1 against the same state.

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Interviewer: Your Postgres disk is 95% full at 3 AM and growing 1% every 10 minutes. What do you do in the next 30 minutes?
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📝 How Shopify Survives Black Friday: The Flash-Sale Playbook Shopify load tests at 150% of last year's peak, queues buyers at the edge and reserves stock during devops-daily.com/posts/how-s… #DevOps

How Shopify Survives Black Friday: The Flash-Sale Playbook

Shopify load tests at 150% of last year's peak, queues buyers at the edge and reserves stock during payment. We rebuilt checkout with k6 and measured it.

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🔓 Mistral's new model tried to escape its test environment, and in three weeks anyone can download it. If you plan to self-host open models, treat them like untrusted code: sandbox them, limit network access, and watch what they do.
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Oct 6
Interviewer: A load test passes at 10,000 requests per second, and production falls over at 3,000. What is different?
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📝 GITHUB_TOKEN Is Now 377 Characters Long. We Tested Which Redaction Rules Still Catch It @github finished moving App installation tokens, including the Actions GITHUB_TOKEN, to a new ghs_<ap devops-daily.com/posts/githu… #DevOps #Security

GITHUB_TOKEN Is Now 377 Characters Long. We Tested Which Redaction Rules Still Catch It

GitHub finished moving App installation tokens, including the Actions GITHUB_TOKEN, to a new ghs__ format on October 2.

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📰 DevOps Weekly Digest - Week 40, 2026 ⚡ Curated updates from @kubernetesio, cloud native tooling, CI/CD, IaC, observability, and security - h devops-daily.com/news/2026-w… #DevOps #News

DevOps Weekly Digest - Week 40, 2026

⚡ Curated updates from Kubernetes, cloud native tooling, CI/CD, IaC, observability, and security - handpicked for DevOps professionals!

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📝 Knowing What Your AI Feature Costs Before Finance Does The model invoice has one line per model, and finance wants one line per feature. We ran three featu devops-daily.com/posts/ai-fe… #DevOps #FinOps

Knowing What Your AI Feature Costs Before Finance Does

The model invoice has one line per model, and finance wants one line per feature. We ran three features on one key and recorded every usage block: a...

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Interviewer: How do you make a webhook endpoint safe when it receives the same event twice?
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Interviewer: A pod is Running and Ready, but users get 502s through the ingress. Where do you start?
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What is the longest you have been blocked on another team without anyone on that team knowing? #DevOps #question
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📝 A Poisoned .git/config Runs Code on git status. We Tested Which Commands and Copies Carry It On October 2 @gitlab disclosed ConfigPoisoning: a repo that brings its own .git/config makes an AI co devops-daily.com/posts/poiso… #DevOps #Git

A Poisoned .git/config Runs Code on git status. We Tested Which Commands and Copies Carry It

On October 2 GitLab disclosed ConfigPoisoning: a repo that brings its own .git/config makes an AI coding tool run attacker commands when it shows a diff.

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Interviewer: How do you tell if a slow request is slow in your code, in the network, or in the database?
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📝 We Took Down Our Mesh VPN Control Plane. Here Is What Kept Working Replacing the VPN with a WireGuard mesh moves the single point of failure from the VPN gateway to th devops-daily.com/posts/mesh-… #DevOps #Networking

We Took Down Our Mesh VPN Control Plane. Here Is What Kept Working

Replacing the VPN with a WireGuard mesh moves the single point of failure from the VPN gateway to the coordination server.

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📝 A Repo per Agent: What @Cloudflare Artifacts Changes About Git Cloudflare Artifacts gives every agent, session or task its own Git repository. We measured how push devops-daily.com/posts/cloud… #DevOps #Git

A Repo per Agent: What Cloudflare Artifacts Changes About Git

Cloudflare Artifacts gives every agent, session or task its own Git repository. We measured how push contention grows when agents share one branch, walked...

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Interviewer: What is the first thing you do when you join a team that has no monitoring at all?
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🧠 SMTP and Email Deliverability Quiz 15 questions to test your skills. devops-daily.com/quizzes/smt… #DevOps #Networking

SMTP and Email Deliverability Quiz - DevOps Daily

Test yourself on the parts of email that actually break: envelope versus header senders, SPF and DKIM alignment, what DMARCbis changed, bounce handling...

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We built a tiny Hacktoberfest challenge for people who keep saying: "i want to contribute to open source, but i don't know where to start" 7 days. 5-15 mins a day. no coding required. one real PR each day. start here 👇 devops-daily.com/hacktoberfe…
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📝 CVE-2026-80521: The Ubuntu Container Escape Is Not Just an Ubuntu Problem A public exploit breaks out of default @Docker and @kubernetesio containers through a bug in the AF_UNIX devops-daily.com/posts/af-un… #DevOps #Linux

CVE-2026-80521: The Ubuntu Container Escape Is Not Just an Ubuntu Problem

A public exploit breaks out of default Docker and Kubernetes containers through a bug in the AF_UNIX garbage collector, and Ubuntu 24.04 and 26.04 still...

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