Sysadmin
Notes and deployment guidance under this infrastructure topic.
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VPS Security Hardening: OpenSSH Keys, UFW Firewall & Fail2ban Rules
A practical sysadmin security walkthrough for locking down production Linux virtual private servers using key-based SSH, UFW, and automated Fail2ban filters.
Read articleWordPress Multisite VPS Requirements: PHP-FPM, Nginx & Resource Sizing
A comprehensive sizing guide for running multi-domain and subdirectory WordPress networks on Linux KVM VPS instances with Nginx and PHP-FPM.
Read articleNextCloud Self-Hosted Cloud Storage on a Linux VPS: Redis, PHP-FPM & Storage Setup
A production setup guide for self-hosting NextCloud on a Linux KVM VPS, covering PHP-FPM tuning, Redis memory caching, and large file chunking.
Read articleNginx Reverse Proxy on a KVM VPS: Upstream Buffers, SSL & WebSocket Setup
A complete configuration reference for deploying Nginx as a high-performance reverse proxy on a Linux KVM VPS, covering buffer tuning, header forwarding, and SSL.
Read articleJenkins CI/CD Server Requirements: Sizing the Controller and Build Agents
Keep the Jenkins controller small and put builds on agents. How to size both.
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