ITNotes - Page 11 of 142 - From Terminal to Cloud

Mastering Linux Capabilities: Fine-Grained Process Permissions with getcap and setcap as a SUID Alternative

October 8, 2026

Linux Capabilities let you replace SUID with fine-grained privilege control — giving binaries only the specific permissions they need, nothing more. This guide covers getcap and setcap with practical examples for DevOps engineers managing production Linux servers.

HomeLab

Deploy Apache Guacamole on Docker: Secure Browser-Based Gateway for RDP, SSH, and VNC

October 7, 2026

A battle-tested deployment guide for running Apache Guacamole on Docker. Access RDP, SSH, and VNC targets securely through any browser without managing VPNs or exposing direct ports.

Linux

Automated Linux Log Rotation with Logrotate: Compression, Permissions, and Disk Space Prevention

October 7, 2026

Uncontrolled log growth can fill your drives and crash production services. Learn how to set up automated log rotation with Logrotate, configure gzip compression, preserve user permissions, and prevent disk outages.

Database

Mastering DuckDB: The Fast In-Process OLAP Database for Serverless Analytics

October 7, 2026

Analyze large CSV and Parquet files instantly without spinning up database servers. This tutorial demonstrates how DuckDB provides serverless, in-process OLAP performance for fast local analytics and cross-source queries.

DevOps

Deploying Linkerd Service Mesh on Kubernetes: Lightweight Zero-Trust mTLS and Network Performance

October 7, 2026

Deploy Linkerd Service Mesh on Kubernetes to secure east-west microservices traffic. Achieve automatic Zero-Trust mTLS, sub-millisecond p99 latency, and lightweight resource usage with Linkerd's Rust-powered micro-proxy.

Linux

Master SELinux on RHEL and Rocky Linux: Managing Contexts, Booleans, and Fixing Access Denials with audit2allow

October 7, 2026

Troubleshoot and fix 2 AM SELinux permission errors on RHEL and Rocky Linux without disabling security. Learn how to diagnose AVC denials, relabel contexts, toggle booleans, and build custom policies with audit2allow.

Networking

Deploying NetBox as a Single Source of Truth: Centralized DCIM, IPAM, and Network Automation

October 7, 2026

Deploy NetBox as your authoritative network Single Source of Truth (SSoT). Master DCIM and IPAM data modeling, render switch configs with Python, and feed dynamic inventory directly into Ansible.

Database

ClickHouse on Docker: Setup and High-Performance OLAP Query Optimization

October 7, 2026

Deploy ClickHouse with Docker Compose, design high-throughput MergeTree schemas, and implement Materialized Views for sub-millisecond analytical aggregations across large datasets.

Building Large-Scale Semantic Search with Milvus and Python: Data Partitioning and Query Optimization for Millions of Vectors

October 7, 2026

Scaling semantic search to millions of vectors requires structured partitioning and tuned indexing. This guide demonstrates how to deploy Milvus with Python, implement Partition Keys, and configure HNSW graphs for low-latency queries.

Linux

Btrfs and Snapper Guide: Subvolumes, Automated Snapshots, and Fast Rollbacks

October 7, 2026

Recover Linux servers from broken updates in seconds. Learn how to configure Btrfs subvolumes, schedule automated Snapper snapshots, and execute instant rollbacks.

Mitigate DDoS with BGP Flowspec and ExaBGP on Linux: Automated Routing-Level Packet Filtering

Deploy Harbor on Docker: Self-Host a Secure Private Container Registry with Trivy and Image Signing for Your HomeLab

Building a Production-Ready Text-to-SQL Engine with Vanna.ai and Python

Deploy CrowdSec on Linux: Building a Distributed IPS to Block Brute Force and Web Attacks

Route-Based IPsec VPN with strongSwan and VTI on Linux: Secure Cloud-to-On-Premises Connectivity

Automate Kubernetes Troubleshooting with K8sGPT and Local Ollama

Mastering Outlines in Python: Guaranteed Structured LLM Output with Regex and CFGs

Mastering Cursor Rules and Context Mentions: Standardize Architecture Across Your Dev Team

Deploying HashiCorp Vault on Kubernetes: Dynamic Secrets and Sidecar Injector Guide

Deploying WPA3-Enterprise with FreeRADIUS and EAP-TLS: Mutual PKI Authentication Guide

Mastering Linux Capabilities: Fine-Grained Process Permissions with getcap and setcap as a SUID Alternative

Deploy Apache Guacamole on Docker: Secure Browser-Based Gateway for RDP, SSH, and VNC

Automated Linux Log Rotation with Logrotate: Compression, Permissions, and Disk Space Prevention

Mastering DuckDB: The Fast In-Process OLAP Database for Serverless Analytics

Master SELinux on RHEL and Rocky Linux: Managing Contexts, Booleans, and Fixing Access Denials with audit2allow

Deploying NetBox as a Single Source of Truth: Centralized DCIM, IPAM, and Network Automation

ClickHouse on Docker: Setup and High-Performance OLAP Query Optimization

Building Large-Scale Semantic Search with Milvus and Python: Data Partitioning and Query Optimization for Millions of Vectors

Btrfs and Snapper Guide: Subvolumes, Automated Snapshots, and Fast Rollbacks