Docker tutorial - IT technology blog
Posted inDocker

Dockerize Elixir Phoenix: Multi-stage Build, OTP Releases, and Production-Ready Erlang Clustering

A detailed guide to Dockerizing Elixir Phoenix with an optimized multi-stage build that reduces image size from 1.2GB to 85MB, production-ready OTP Releases configuration, and automatic Erlang clustering via libcluster DNS in Docker Compose. Includes a real-world Dockerfile, clustering configuration, and a deploy script with safe database migrations.
Docker tutorial - IT technology blog
Posted inDocker

Advanced Docker Swarm: Rolling Updates, Placement Constraints, and Zero-Downtime Deployments

A detailed guide to configuring Docker Swarm for production: zero-downtime Rolling Updates with order: start-first, Placement Constraints for proper workload distribution, and Docker Config/Secret for secure configuration management. Written for those who already know Swarm basics and want to level up to a real production environment without deployment downtime.
Fedora tutorial - IT technology blog
Posted inFedora

Installing and Configuring MariaDB on Fedora Server: Production Database Deployment with SELinux and firewalld

A complete guide to getting MariaDB production-ready on Fedora Server: securing the installation with mysql_secure_installation, opening ports correctly with firewalld rich rules, handling SELinux context for custom datadirs, and debugging refused connections. Includes basic performance tuning and a final production checklist.
Docker tutorial - IT technology blog
Posted inDocker

Configuring Docker Compose Overrides for Multiple Environments: Effectively Separating Dev, Staging, and Production

Managing Docker applications across development, testing, and production environments often presents many challenges. Instead of duplicating configurations or using complex environment variables, Docker Compose Override offers an effective solution for separating configurations, saving resources, and simplifying the deployment process.
MySQL tutorial - IT technology blog
Posted inMySQL

Setting Up and Configuring ProxySQL: A Connection Pooler and Load Balancer Solution for MySQL Production

ProxySQL is a powerful connection pooler and load balancer that optimizes performance and stability for MySQL production. This article provides a guide to basic and advanced installation and configuration, along with practical tips for effective ProxySQL deployment, addressing connection management and load distribution issues.