Posted inNetwork
How to Set Up an Internal Chrony NTP Server on Linux: Accurate and Secure for Production
A hands-on guide to resolving distributed clock drift and setting up a secure, robust internal Chrony NTP server cluster on Linux.
Posted inCentos
How to Install and Configure Graylog on CentOS Stream 9: Building a Centralized Log Management System
A step-by-step guide to deploying a centralized log management system with Graylog 6.0, OpenSearch, and MongoDB on CentOS Stream 9 for effective infrastructure monitoring.
Posted inFedora
How to Install and Configure Keycloak on Fedora Server: Building Single Sign-On (SSO) and OAuth2/OIDC Systems
A comprehensive guide to installing and configuring Keycloak on Fedora Server: from OpenJDK and PostgreSQL setup to Systemd optimization, Nginx reverse proxy, and OAuth2/OIDC SSO integration.
Posted inDevelopment
A Complete Guide to Integrating Sentry into Next.js: Catching Runtime Errors and Monitoring Performance from A to Z
Learn how to set up Sentry for full-stack Next.js apps: from a 5-minute wizard setup, capturing Server Action/API errors, and measuring database latency to smart Slack alerts.
Posted inGit
Git assume-unchanged vs. skip-worktree: How to Safely Ignore Local Config Files
Understand the key differences between assume-unchanged and skip-worktree in Git. Learn how to safely ignore local config changes and prevent data overwrite on git pull.
Posted inUbuntu
How to Install and Configure Prometheus with Grafana on Ubuntu Server
A hands-on guide to installing and configuring Prometheus, Node Exporter, and Grafana on Ubuntu Server for accurate, continuous hardware monitoring.
Posted inDocker
Setting Up LocalStack with Docker Compose: Emulate AWS S3, SQS, and DynamoDB Locally
A comparison of 3 AWS emulation approaches for local development and a step-by-step guide to configuring LocalStack with Docker Compose for offline testing and cloud cost savings.
Posted inDevelopment
Building an Asynchronous REST API with FastAPI and Async SQLAlchemy 2.0: Connection Pool Optimization & Alembic Migrations
A practical guide to building asynchronous REST APIs with FastAPI and Async SQLAlchemy 2.0. Learn connection pool optimization, Alembic migrations, and high-concurrency production practices.
Posted inFedora
Getting Started with bootc on Fedora: Build and Deploy Bootable Container Operating Systems
bootc applies container packaging workflows directly to the Fedora operating system. Learn how to write Containerfiles, export QCOW2 virtual disks, and manage OS lifecycles using GitOps.
Posted inUbuntu
How to Install Tailscale on Ubuntu: Create a Mesh VPN Without Port Forwarding
A step-by-step guide to installing and configuring Tailscale on Ubuntu. Set up a secure WireGuard Mesh VPN for remote server access without opening ports or buying static IPs.