Cybersecurity, Linux & Infrastructure Blog
RSS FeedI hack, automate, and self-host. Posts on security, Linux, and infrastructure.
Check my Articles and CTF write-ups . They are written the way I would have liked to read them, simple and to the point, over to the point.
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The AI Becomes the "I"
Published: at 07:31 PMAn essay on AI shifting the 'I' leftward: its effect on IT careers, society, and why Asimov's science fiction is becoming reality.
The way I do productivity
Published: at 05:05 PMHow I organize my life for productivity - note-taking, todos, a calendar, a diary, plain-text accounting, and Linux.
HashiCorp Certified: Vault Associate (003) Review
Published: at 07:52 PMHashiCorp Certified: Vault Associate (003) exam review - how I studied, which resources worked, and what the exam itself is like.
Ledger CLI: Plain Text Accounting
Published: at 05:18 PMWhy I log every transaction in one plain text file with Ledger CLI: double-entry basics, the account tree, multi-currency metals and stocks, daily queries.
A NixOS Control Plane and OpenBao in HA
Updated: at 02:00 AMBuild a declarative NixOS control plane that deploys a fleet over SSH, then run OpenBao on it - single node first, then a raft HA cluster.
HashiCorp Vault Lab: Auto-unseal, LDAP Auth, and Team Policies
Published: at 03:00 PMHashiCorp Vault auto-unseal (Azure HSM + Transit), LDAP auth mapped to team policies, and a KV v2 ACL design - a hands-on three-VM lab.
Secret Management with OpenBao and GitLab CI/CD
Published: at 02:08 PMFive ways to get secrets into a deployed app with GitLab CI and OpenBao (Vault), from plain .env files to JWT/AppRole auth, a Vault Agent on the host, and live SDK fetches, plus the full self-hosted GitLab and OpenBao setup.
Access Kubernetes NodePort Services with Subdomains
Published: at 07:50 AMExpose Kubernetes NodePort services via subdomains using wildcard DNS and NGINX, without an Ingress controller.
Presenterm
Published: at 02:56 PMWhy I like Presenterm for tech talks: write slides in Markdown, keep them in git, get code highlighting, diagrams and images, and present everything directly from the terminal.
Recent Posts
Certified Kubernetes Administrator (CKA) Review
Published: at 02:22 PMAn honest CKA exam review covering what it really takes to pass - from hands-on lab practice to the resources and mindset that actually make the difference.
01 - a GNU Core Utility - ls
Published: at 06:53 PMMaster the Linux ls command with this complete guide covering basic to advanced options, hidden features, and modern alternatives to boost your terminal productivity.
Pentest Tools TLDR
Published: at 02:23 PMIn this post, there will be a set of **TLDR**s (too long; didn't read) for categorized Penetration Testing tools.
Настройка Компонентов Обеспечения Информационной Безопасности
Published: at 02:27 PMВ этом отчете изложены все шаги по настройке Компонентов Обеспечения Информационной Безопасности. Это задание было одним из этапов сореванования по Кибербезопасности на платформе "IT PLANETA".