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Server Hardening and Initial Setup Before deploying any application, secure the underlying infrastructure. Configure cloud provider security groups to restrict inbound traffic strictly to required ports: SSH (22), HTTP (80), and HTTPS (443). Avoid exposing all ports via 0.0.0.0/0 in production—tighten rules to specific IPs or ranges where possi ...

Let's Encrypt provides a free, automated, and open certificate authority service operated by the Internet Security Research Group (ISRG), a California-based nonprofit organization. The project is backed by major companies including Mozilla, Cisco, Akamai, Electronic Frontier Foundation, and Google Chrome, and has grown rapidly since its launch. ...

Basic IP Whitelist Configuration To restrict access to specific IP addresses while allowing local connections: allow 100.110.15.16; allow 100.110.15.17; allow 100.110.15.18; allow 127.0.0.1; deny all; IP-Based Access Redirection Method 1: Direct IP Comparison Redirect specific client IP addresses using the $remote_addr variable: if ($remote_ad ...

When DEBUG is disabled in Django, the framework stops serving static files automatically. This causes the admin itnerface to render without CSS and JavaScript. To resolve this, you must configure a dedicated web server to handle these assets. Begin by updating your Django settigns: # config/settings.py import os from pathlib import Path BASE_D ...

Modern web applications frequently face surges in request volume—such as during flash sales, live events, or viral content spikes—making resilient, scalable API infrastructure esential. While Python offers rapid development and rich ecosystem support, its runtime characteristics (e.g., the GIL) and default synchronous I/O model can hinder throu ...

Introduction to Nginx Installation Methods I/O Models and Zero-Copy Technology Process Architecture Configuration Optimization Smooth Upgrade Procedures Introduction to Nginx Nginx is a high-performance web server developed in 2002 by Russian engineers for Rambler.ru. Acquired by F5 in 2019 for $670M, it's used by major interne ...

Proxy Pass Configuration Examples When configuring Nginx as a reverse proxy, the behavior of the proxy_pass directive can vary depending on the presence of a trailing slash in the URL. Example 1: Proxy Pass with Trailing Slash location ^~ /abc/ { proxy_pass http://192.168.1.1:8080/; } A request to http://www.a.com/abc/a.html will be forwa ...

Effective collaboration between frontend and backend services in distributed architectures requires careful configuration of request routing, especially when switching between local development, staging, and production environments. This guide outlines three common deployment scenarios using Vue.js, Spring Cloud Gateway, Kubernetes, and Nginx, ...

Prerequisites A functional Kubernetes cluster with Traefik installed as the ingress controller. Network File System (NFS) storage mounted across all nodes to ensure Jenkins configuration survives pod restarts. A private Docker registry accessible at 192.168.0.153:5000. The base environment uses an Alpine LNP stack (PHP 5.6.31 and Nginx 1.8.1) a ...

Keepalived Fundamentals Keepalived is an open-source software solution designed to monitor server health and manage failover scenarios. When a web node encounters downtime or errors, Keepalived automatically removes the affected node from the cluster and redistributes traffic to healthy servers. Once repairs are completed, the original node rej ...