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How to Configure Azure Backup for Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Azure Backup for Windows Server 2012 R2

How to Configure Azure Backup for Windows Server 2012 R2 Azure Backup provides an enterprise-grade, cloud-hosted backup solution that extends Windows Server 2012 R2’s protection capabilities beyond the local network. Using the Microsoft Azure Recovery Services (MARS) agent, you can back up files, folders, and system state directly to Azure without requiring additional backup infrastructure. […]

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How to Set Up RADIUS Authentication with NPS on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up RADIUS Authentication with NPS on Windows Server 2012 R2

How to Set Up RADIUS Authentication with NPS on Windows Server 2012 R2 Network Policy Server (NPS) is Microsoft’s implementation of a RADIUS (Remote Authentication Dial-In User Service) server and proxy, included with Windows Server 2012 R2. NPS centralizes authentication, authorization, and accounting for network access—including VPN connections, 802.1X wired and wireless connections, dial-up connections, […]

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How to Deploy Applications with Docker Compose on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy Applications with Docker Compose on RHEL 9

Docker Compose transforms multi-container application deployment from a series of manual docker run commands into a declarative, version-controlled configuration. A production-ready Compose deployment includes health checks (to ensure services are truly ready before dependent services start), resource limits (to prevent runaway containers from consuming all host resources), restart policies (to automatically recover from failures), and […]

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How to Deploy a Ruby on Rails Application on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy a Ruby on Rails Application on RHEL 9

Ruby on Rails (Rails) is a full-stack web application framework built on Ruby that made convention-over-configuration and the MVC pattern mainstream in web development. Rails provides ActiveRecord (ORM), ActionController (routing and controllers), ActionView (templating with ERB/Haml), ActionMailer, ActiveJob (background jobs), ActionCable (WebSockets), and a comprehensive set of security defaults out of the box. A Rails […]

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How to Build and Deploy a Go Web Application on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Build and Deploy a Go Web Application on RHEL 9

Go’s standard library includes a production-ready HTTP server with support for HTTP/2, TLS, and concurrent request handling — no external framework is required for simple web applications. For more complex applications, the Gin framework adds routing, middleware, request binding, and response rendering while maintaining excellent performance. Go web applications compile to a single binary, making […]

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How to Deploy a Node.js Application with PM2 on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy a Node.js Application with PM2 on RHEL 9

PM2 is a production-grade process manager for Node.js applications. Running a Node.js app directly with node server.js has a critical limitation: if the process crashes, it stays down until someone manually restarts it. PM2 solves this and much more — it automatically restarts crashed processes, starts applications on system boot, enables zero-downtime reloads for application […]

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How to Deploy a Flask Application with Gunicorn and Nginx on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy a Flask Application with Gunicorn and Nginx on RHEL 9

Flask is a lightweight Python web microframework that provides only the essentials: URL routing, request/response handling, and Jinja2 templating. Unlike Django, Flask does not include an ORM, authentication, or admin interface by default — these are added through extensions like SQLAlchemy, Flask-Login, and Flask-Admin. This minimalism makes Flask the ideal choice for REST APIs, microservices, […]

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How to Deploy a Django Application with Gunicorn and Nginx on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy a Django Application with Gunicorn and Nginx on RHEL 9

Django is a high-level Python web framework that follows the “batteries included” philosophy — it provides an ORM, authentication, admin interface, form validation, URL routing, templating, and security middleware out of the box. This makes Django the framework of choice for data-driven applications and content management systems where rapid development and maintainability matter. Django’s ORM […]

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How to Install pgAdmin 4 on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install pgAdmin 4 on RHEL 9

pgAdmin 4 is the official, full-featured web-based administration and development platform for PostgreSQL. It provides a graphical interface for managing databases, schemas, tables, views, functions, roles, and server connections; a SQL query editor with syntax highlighting and query execution plans; a visual schema designer; backup and restore wizards; and monitoring dashboards for server statistics. pgAdmin […]

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How to Configure Nginx WebSocket Proxying on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Nginx WebSocket Proxying on RHEL 9

WebSockets provide full-duplex communication channels over a single TCP connection, enabling real-time features such as live chat, push notifications, collaborative editing, gaming, and live dashboards. Unlike standard HTTP, which is request-response, WebSocket connections are persistent and bidirectional — the server can push data to clients at any time without a client request. Nginx can act […]

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