ashikov.ru

Roman Ashikov

DevOps Team Lead

A public engineering knowledge base.

I publish notes, guides, incident reviews, and practical approaches from my daily work.

Main topics:

Kubernetes
Linux
DevOps
CI/CD
Automation
AIOps
Engineering documentation

A Ready Node Can Still Drift from Its Baseline

A green Ready status and a correct node configuration are not the same guarantee. I ran into that distinction while standardizing kubelet settings across several node classes in a Kubernetes cluster I operated. Each class had a configuration baseline stored in Git. It defined resource reservations, eviction thresholds, and image garbage collection settings. Kubernetes reported the nodes as Ready, yet a separate check found that the local /var/lib/kubelet/config.yaml on some of them no longer matched the expected file. ...

No newline at end of file: how one byte changes a Git diff

How a final newline differs from a blank line and why one byte affects git diff and git blame.

AGENTS.md as Part of DocOps

Why AGENTS.md should be seen not only as AI instructions, but also as part of a DocOps approach to engineering context.

Why a Good AGENTS.md Is Rarely Long

Why AGENTS.md should stay short and not replace README, ADR, CHANGELOG, or project documentation.

AGENTS.md Is Short Project Memory

Why AGENTS.md is useful not only for AI, but also for returning to a project after some time.

What I Store in AGENTS.md

Which sections to keep in AGENTS.md so AI can understand the project quickly without turning it into another README.

How I Use AGENTS.md in My Projects

Why I keep AI agent instructions in the repository and how AGENTS.md helps preserve project context.

How an inotify watchers limit caused kubelet instability

Troubleshooting an unstable Kubernetes node caused by an exhausted inotify watchers limit.

Who consumes inotify watchers in Kubernetes

An overview of the processes that consume inotify watchers and why this Linux limit should be part of infrastructure capacity planning.

Roman Ashikov#

Roman Ashikov