devops Archives

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

October 19, 2026

Say goodbye to Docker Hub rate limits. Deploy Project Harbor on Docker Compose with automated Trivy vulnerability scanning and Cosign image signing for your HomeLab.

Security

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

October 19, 2026

Tired of isolated log parsers missing distributed brute-force sweeps? Here is how to deploy CrowdSec on Linux to shut down coordinated SSH and web attacks using collaborative, crowd-sourced threat intelligence.

Automate Kubernetes Troubleshooting with K8sGPT and Local Ollama

October 19, 2026

Learn how to combine K8sGPT and local Ollama models to build an offline, privacy-focused diagnostic engine for your Kubernetes clusters without sending telemetry to external APIs.

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

October 19, 2026

Standardize code architecture across your engineering team with Cursor Rules (.cursorrules, .cursor/rules) and symbol mentions. Eliminate model drift, reduce PR cycles, and enforce clean conventions at scale.

DevOps

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

October 19, 2026

Learn how to deploy HashiCorp Vault on Kubernetes using Helm. This guide walks through configuring Kubernetes authentication, issuing ephemeral PostgreSQL credentials, and injecting secrets using Vault Agent sidecars.

Database

MySQL Replication with GTID: Master-Slave Setup and Safe Production Failover

October 18, 2026

Discover how switching to GTID-based MySQL replication eliminates fragile binary log coordinates during production incidents. Follow this real-world guide to configure master-slave clusters and execute zero-data-loss failover safely.

Database

PostgreSQL Autovacuum Optimization: Diagnose I/O Bottlenecks, Prevent Wraparound, and Tune Production

October 18, 2026

Eliminate disk I/O bottlenecks and resolve dead tuple bloat through practical PostgreSQL autovacuum tuning. Learn how to configure cost limits, tune high-churn tables individually, and safeguard production clusters from transaction ID wraparound outages.

Database

Real-Time SQLite Backup to S3 with Litestream: Step-by-Step Guide for Zero-RPO Recovery

October 17, 2026

Learn how to continuously replicate SQLite databases to AWS S3 using Litestream. This step-by-step tutorial covers WAL streaming, sub-second RPO recovery, and production Docker setups.

Database

Data Masking with PostgreSQL Anonymizer: Sanitizing Sensitive Data for Staging Environments

October 17, 2026

Learn how to use PostgreSQL Anonymizer to mask sensitive PII before syncing production databases to staging, covering declarative security labels, deterministic masking, and CI/CD validation.

Linux

Master Rsync on Linux: SSH Sync, Bandwidth Tuning, and Incremental Backups

October 17, 2026

Learn how to use rsync for reliable SSH file syncing, bandwidth management, and automated incremental backups using hard links. Includes a ready-to-use production bash script and I/O tuning tips.