The smell of ozone didn’t come from a short circuit. It came from the laser printer in the corner of the NOC, churning out five hundred pages of stack traces because some “architect” decided that Kubernetes v1.16 was the perfect time to finally delete the extensions/v1beta1 API group without checking our legacy Helm 2.14 charts. … Read more
Incident Timestamp: 03:14:22 UTC Location: Primary Inference Cluster – Zone US-East-1 Status: Critical System Failure / Data Exfiltration Confirmed [03:14:22] WARN: Rate limit exceeded for API_KEY: ICARUS_PROD_092 (1500 requests/sec) [03:14:23] INFO: Vector DB Query: "SELECT * FROM internal_docs WHERE similarity > 0.1 AND metadata.access == ‘public’" [03:14:24] ERROR: Kernel Panic – OOM Kill on PID … Read more
INCIDENT REPORT #882-B: Why our migration to the ‘Modern Stack’ nearly bankrupted the company. DATE: October 14, 2023 TO: Executive Steering Committee, Engineering Leads FROM: Lead Architect (Recovery Team) SUBJECT: Post-Mortem of “Project Phoenix” (The Great Migration) TOTAL LOSS: $50,420,000 USD (Estimated) TIMELINE: January 2022 – June 2023 1. Incident Report Summary Project Phoenix was … Read more
text [ 2592.148203] NVRM: GPU at PCI:0000:01:00: GPU-8d7f4a2b-3c1e-4f5d-9a8b-7c6d5e4f3a2b [ 2592.148210] NVRM: Xid (PCI:0000:01:00): 31, GPU memory page fault in isolation [ 2592.148215] nvidia-nvlink: Unregistered the Nvlink Core, major device number 234 [ 2592.148222] NVRM: os_schedule: Attempted to yield the CPU while holding a spinlock! [ 2592.148230] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 2592.148235] … Read more
text Uncaught Error: Hydration failed because the initial UI does not match what was rendered on the server. at makeError (react-dom.development.js:22839:1) at validateDOMNesting (react-dom.development.js:10842:1) at attemptHydration (react-dom.development.js:12344:1) at mountHydratableComponent (react-dom.development.js:14522:1) … [48 more lines of minified agony] … at Page (./src/app/dashboard/page.tsx:42:11) Node v20.11.0 React 18.3.1 Next.js 14.2.3 I’m sitting here at 4:14 AM, staring at … Read more
INCIDENT REPORT #882-ALPHA. Status: Resolved (Barely). Subject: Why your ‘artificial intelligence’ strategy is a ticking time bomb. TIMESTAMP LOG: THE 72 HOURS OF RADIOLOGICAL FALLOUT T-Minus 03:14:00 (Friday, 18:00): Deployment of “Project Prometheus” (the internal name for our ‘artificial intelligence’ recommendation engine v4.2) goes live. Data Science team leaves for a “celebratory happy hour.” T-00:00:00 … Read more
Stop Building Pipelines and Start Building Systems: A Decade of DevOps Regrets It was 3:15 AM on a Tuesday in 2017. I was staring at a Grafana dashboard that looked like a heart monitor for a patient in cardiac arrest. We had just “automated” our deployment pipeline using a series of nested Jenkins Groovy scripts … Read more
text May 14 03:12:04 web-prod-01 sshd[29481]: Invalid user admin from 193.161.193.193 port 54228 May 14 03:12:06 web-prod-01 sshd[29483]: Invalid user support from 193.161.193.193 port 54230 May 14 03:12:09 web-prod-01 sshd[29485]: Accepted password for jdoe from 193.161.193.193 port 54232 ssh2 May 14 03:12:09 web-prod-01 systemd-logind[652]: New session 482 of user jdoe. May 14 03:12:10 web-prod-01 sudo: … Read more
AWS Best Practices: Why Your Infrastructure is a Money Pit and How to Stop the Bleeding I once worked at a fintech startup where we “followed the docs” to the letter. We set up a multi-AZ deployment for a high-traffic microservice, thinking we were being smart about availability. Three days later, the Head of Engineering … Read more
HTTP/2 200 content-type: text/html; charset=UTF-8 vary: Accept-Encoding server: cloudflare cf-ray: 892349823498234-SJC cache-control: max-age=0, no-cache, no-store, must-revalidate x-frame-options: DENY x-xss-protection: 1; mode=block content-security-policy: default-src ‘self’; script-src ‘self’ ‘unsafe-inline’ ‘unsafe-eval’ https://cdn.segment.com https://www.google-analytics.com; style-src ‘self’ ‘unsafe-inline’ https://fonts.googleapis.com; set-cookie: _session_id=89234jksdf89234; path=/; expires=Tue, 19 Jan 2038 03:14:07 GMT; secure; HttpOnly; SameSite=Lax strict-transport-security: max-age=31536000; includeSubDomains; preload x-content-type-options: nosniff content-length: 842903 Look … Read more