Self Hosting
Self-Host OpenClaw: VPS Setup to Production (2026)
Self-host OpenClaw from zero to production. Server provisioning, SSH lockdown, Docker, reverse proxy, Fail2ban, performance tuning, and full backup strategy in one guide.
Linux
Linux administration, shell scripting, and systems-level knowledge for developers who want to understand what's running under their stack.
Self Hosting
Self-Hosting Prometheus and Grafana: Infrastructure Monitoring That Actually Works
Build a production-grade monitoring stack with Prometheus and Grafana from scratch. Covers architecture, Docker Compose deployment, Node Exporter, alerting with Alertmanager, PromQL from basics to advanced, pre-built dashboards, and everything CoderOasis uses to monitor its own infrastructure.
Self Hosting
Zero Trust Everything: The Complete Guide to Self-Hosting Teleport for Secure Infrastructure Access
CoderOasis runs Teleport internally for everything — admin panel access, secure database connections, Kubernetes, and zero-trust philosophy across our entire team. This is the complete technical guide to installing, configuring, and running your own self-hosted Teleport cluster from scratch.
Cybersecurity
CVE-2026-31431 "Copy Fail": How a 9-Year-Old Linux Kernel Bug Gives Any Local User Root in 732 Bytes
CVE-2026-31431 chains AF_ALG, splice(), and authencesn's ESN scratch write into a deterministic 4-byte page cache write that gives an unprivileged local user root. Full technical breakdown, exploit mechanics, detection, mitigation, and patch status per distro.
Monthly Roundup
Monthly Roundup — April 2026
The six biggest articles from CoderOasis in April 2026 — local LLMs, self-hosted stacks, Claude Mythos breaking Firefox, the r/programming AI ban, Stable Diffusion, and the sandbox escape that changed everything.
Self Hosting
How to Self-Host Your Own Email Server With Mailcow in 2026 — Complete Setup Guide
How to Self-Host Your Own Email Server With Mailcow in 2026 — Complete Setup Guide Meta Description: Stop letting Google and Microsoft read your email. This guide sets up a complete private email server with Mailcow on a NetCup VPS — DNS, SPF, DKIM, DMARC, TLS, webmail, and mobile clients.
Self Hosting
The Complete Self-Hosted Productivity Stack: Nextcloud, Vaultwarden, Immich, Jellyfin, and Paperless in 2026
Replace Google Drive, Google Photos, 1Password, Plex, and your document scanner with a self-hosted stack that runs on your hardware. Complete Docker Compose setup with Traefik, Nextcloud, Vaultwarden, Immich, Jellyfin, and Paperless-ngx.
Linux
Linux 7.1 MMC Changes Finally Land After Linus Called the 7.0 Submission "Complete Garbage"
Back in February 2026, Linus Torvalds rejected the entire MMC subsystem pull request for Linux 7.0, calling it "complete garbage" and "untested crap" because it didn't build properly and bypassed linux-next. Linux 7.1 gets it right.
Linux
Linux 7.0 RC6 Is Busier Than It Should Be, and Torvalds Isn't Happy About It
Linux 7.0 RC6 landed with more fixes than Torvalds wants to see this late in the cycle, and RC5's calm turned out to be a mirage. He's not panicking yet — but he's also not making promises about the release date, and he suspects better AI coding tools might be partly responsible for the noise.
Cybersecurity
What is Privilege Escalation? How Attackers Go From Foothold to Full Control
An attacker starts with a low-privileged shell or user account and escalates to root or Administrator using misconfigurations, SUID binaries, kernel exploits, and Active Directory attacks. Here's every technique, the tools professionals use, and how to harden against it.
Cloud Computing
What is Infrastructure as a Service? The Layer That Makes Everything Else Possible
Infrastructure as a Service gives you virtualized servers, storage, and networking on demand without owning any hardware. You rent compute and own everything that runs on it. Here is what IaaS actually is, what it demands from you.
Linux
Understanding Linux's True and False Commands
True and False are the most common concepts in all forms of computing. They’re so highly critical to Boolean logic, but did you know that true and false are also even commands on Linux? There is a simple explanation. This is that the true command generates an exit code