📰 Dev.to · opscanopy

Docker interview prep for DevOps: scenario-based questions, clear answers, visual explanations, and the common gotchas interviewers love to ask.

The first time I opened a Kubernetes manifest, I closed my laptop. Pods, ReplicaSets, DaemonSets,...

I've been on both sides of the table. Some years I'm the one sweating through a Docker round; other...

I once watched a developer breeze through three Docker courses and then freeze solid the first time a...

You pushed a commit, opened the Actions tab, and there's nothing there. No red X, no yellow dot — the...

You triaged the CVE. A scanner flagged CVE-2023-45853 in zlib, you read the advisory, confirmed the...

You triaged the CVE. A scanner flagged CVE-2023-45853 in zlib, you read the advisory, confirmed the...

A regular expression that parses a log line in your editor and a regular expression that survives a...

PromQL looks dense the first time you meet it. A line like histogram_quantile(0.99, sum by (le,...

If you’ve written Prometheus queries, Grafana Loki’s LogQL looks reassuringly familiar — rate(...),...

A YAML linter will tell you when your workflow won’t parse. It won’t tell you when your workflow...

A .env.example is the one file in your repo that nobody runs, nobody tests, and everybody trusts....

Cron has run the world’s scheduled jobs for forty years, and on most servers it still works fine. But...

Almost everyone who runs a backend has stared at a line like */15 9-17 * * 1-5 and half-remembered...