Kiril urbonas — Author | DevOpsNess

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Kiril urbonas

DevOps Engineer and AI Enthusiast

270 articles published

••last week

Monitoring That Actually Helps On-Call: Alerts, Dashboards, and Runbooks

How we went from 200 alerts per week (most ignored) to 15 actionable alerts with clear runbooks and useful dashboards.

Kiril urbonas

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••last week

Secrets Management in Practice: From .env Files to Vault

How we migrated from .env files checked into repos to a proper secrets management workflow with HashiCorp Vault and CI/CD integration.

Kiril urbonas

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••last week

Incident Postmortems That Actually Prevent Repeat Failures

How to write postmortems that lead to real improvements, not just documentation theater. Includes a template and real examples.

Kiril urbonas

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••last week

Terraform Modules Done Right: Lessons from Managing 50+ Services

Practical patterns for Terraform modules at scale: versioning, composition, testing, and avoiding the monolith trap.

Kiril urbonas

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••2 weeks ago

Linux Performance Troubleshooting: A Real Incident Walkthrough

Step-by-step debugging of a production Linux server hitting 100% CPU. From top to perf to the actual fix.

Kiril urbonas

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••2 weeks ago

Prompt Engineering Patterns That Actually Work in Production

Battle-tested prompt patterns from running LLM features in production: structured output, chain-of-thought, and graceful failure handling.

Kiril urbonas

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••2 weeks ago

AWS Cost Audit: 7 Things We Found Wasting Money Every Month

A real cost audit uncovered idle load balancers, oversized RDS instances, and forgotten snapshots. Here's what we found and how we fixed each one.

Kiril urbonas

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••2 weeks ago

How We Cut Our Docker Image Size by 80% and Why It Matters

A real walkthrough of shrinking bloated Docker images from 1.2GB to 240MB using multi-stage builds, Alpine, and dependency auditing.

Kiril urbonas

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••2 weeks ago

Model Fallback Policies for Customer-Facing AI: The Routing Rules That Kept SLA Intact

A real-world model fallback guide for customer-facing AI systems, covering how one team preserved response quality and support SLAs during a partial provider degradation.

Kiril urbonas

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••2 weeks ago

Artifact Promotion Instead of Rebuilds: The Release Control Pattern That Stopped Drift

A practical artifact promotion guide for CI/CD teams that were tired of hearing 'it passed in staging' after production behaved differently because the release was rebuilt.

Kiril urbonas

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••2 weeks ago

RDS Restore Drills for Busy Teams: The Recovery Workflow That Surfaced Real Gaps

A hands-on RDS restore drill guide for small cloud teams that thought backups were covered until a timed restore test exposed missing steps, DNS confusion, and stale credentials.

Kiril urbonas

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••3 weeks ago

Systemd Drop-In Overrides for Vendor Services: The Supportable Linux Ops Pattern

A practical systemd drop-in guide built from a real operations problem: vendor unit files kept changing, but the team still needed consistent restart, environment, and logging behavior.

Kiril urbonas

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