Best of Faun — 2025

  1. 1
    Article
    Avatar of faunFaun·1y

    Why Senior Developers Google Basic Syntax

    Senior developers often Google basic syntax not due to a lack of knowledge, but because they focus on strategic thinking and problem-solving rather than memorizing specific syntax. This approach helps manage cognitive load, allowing them to utilize external resources efficiently. The skill of efficiently finding information is a hallmark of seniority. Teaching juniors to embrace Googling as a normal practice can help reduce imposter syndrome and highlight that expertise lies in judgment and application of concepts.

  2. 2
    Article
    Avatar of faunFaun·32w

    My n8n Journey: From Zero to Building AI-Powered Tools

    A developer shares their journey learning n8n workflow automation from scratch, starting with simple weather API integrations and progressing to building Quik8n, a Chrome extension that uses AI to generate n8n workflows. The post includes practical learning resources, a step-by-step workflow creation methodology, and advice for beginners to experiment with the self-hosted version. The author emphasizes community learning, iterative development, and the value of hands-on experimentation in mastering automation tools.

  3. 3
    Article
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    Five Bash Scripts Every DevOps Must Know💡

    Explore five essential bash scripts for DevOps tasks including backup creation, system monitoring, security audits, service availability checks, and disk partitioning. These basic scripts offer powerful solutions for everyday challenges in managing IT infrastructures.

  4. 4
    Article
    Avatar of faunFaun·1y

    Hands-On AI for DevOps: A Builder’s Series

    The introduction to a series exploring AI-augmented systems in DevOps. It explains how AI is transforming traditional methods into intelligent automation, enabling systems to adapt, learn, and support workflows. The post outlines the benefits of AI in DevOps, such as summarizing alerts, generating configurations from natural language, reviewing pull requests, and debugging pipelines.

  5. 5
    Article
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    Do These 5 Ansible Projects — DevOps Job Guaranteed

    The post outlines five Ansible projects that can enhance the skills of someone pursuing a DevOps role. It describes real-life scenarios ranging from setting up a workstation to managing Docker containers and building scalable web platforms with CI/CD. Each project increases in complexity and offers practical implementations to build a portfolio, focusing on automation, security, and integration of tools like Ansible, Docker, and CI/CD pipelines.

  6. 6
    Article
    Avatar of faunFaun·1y

    Introduction Guide to RPC in Golang

    RPC (Remote Procedure Call) simplifies communication between services by allowing a procedure to be executed on a remote machine as if it was a local function. This guide explains the need for RPC in place of traditional API calls in distributed systems, provides an example of a key-value store implementation, and outlines server and client design in Golang using the rpc package. It also covers the structure of RPC functions and the practical steps to run both the server and client.

  7. 7
    Article
    Avatar of faunFaun·30w

    1/3 Hands on Kubernetes with Minikube

    Minikube provides a single-node Kubernetes cluster for local development and learning. This guide walks through installing Minikube, understanding its architecture including control plane components (API server, etcd, controller manager, scheduler, CoreDNS) and worker node components (kubelet, kube-proxy), exploring default services and namespaces, and accessing the Kubernetes Dashboard. All components run on one node while maintaining the same architecture as production Kubernetes clusters.

  8. 8
    Article
    Avatar of faunFaun·38w

    Hands on Automation with Ansible

    A practical guide to setting up a 2-node Ansible lab environment using VirtualBox with Kali Linux as the control node and Ubuntu Server as the managed node. Covers installation, SSH configuration, inventory creation, and running a sample playbook that installs and configures Apache web server. Demonstrates Ansible's agentless architecture and YAML-based automation capabilities in an isolated testing environment.

  9. 9
    Article
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    Introduction to Cloud Infrastructure Automation With Terraform

    Learn how Infrastructure as Code (IaC) and Terraform can revolutionize cloud infrastructure management by using code to automate the creation and maintenance of resources. This guide covers essential Terraform concepts such as providers, resources, variables, data sources, and output variables, with practical AWS examples to help you get started.

  10. 10
    Article
    Avatar of faunFaun·1y

    Essential Python Libraries for Data Science in 2025

    Python remains the top choice for data science due to its versatility, simplicity, and strong community support. Essential Python libraries such as NumPy, Pandas, Scikit-learn, TensorFlow, PyTorch, SciPy, Altair, XGBoost, Statsmodels, and Plotly are highlighted for their key features and use cases, all of which continue to evolve to meet the demands of data science in 2025. Staying current with these libraries is crucial for maintaining efficiency, competitiveness, and innovation in the field.

  11. 11
    Article
    Avatar of faunFaun·48w

    Why Prompting is a Core DevOps Skill

    Large language models are transforming DevOps by enabling engineers to generate infrastructure code, CI/CD pipelines, and automation scripts through natural language prompts instead of manually writing complex configurations. This shift from "Infrastructure as Code" to "Infrastructure as a Conversation" offers benefits beyond speed, including consistency, accelerated learning, and creative freedom. The author demonstrates how a simple prompt can replace hours of manual work, such as generating a complete GitHub Actions workflow in minutes rather than the traditional multi-hour process of copying, modifying, and debugging YAML files.

  12. 12
    Article
    Avatar of faunFaun·51w

    AWS Solutions Architect Professional Exam: My Experience and Tips for Success

    A comprehensive guide to passing the AWS Solutions Architect Professional (SAP-C02) exam, covering preparation strategies, recommended resources, and exam tactics. The author shares their experience after completing six AWS certifications, emphasizing the exam's difficulty and the need for deep technical knowledge, hands-on experience, and strategic preparation. Key recommendations include using Stephane Maarek's video courses and Jon Bonso's practice exams, focusing on AWS Organizations, hybrid infrastructure, and migrations, and developing a tactical approach to answering questions during the exam.

  13. 13
    Article
    Avatar of faunFaun·46w

    The Platform Engineer Starter Kit

    Platform engineering teams build and operate Internal Developer Platforms (IDPs) that serve as self-service infrastructure for development teams. They focus on developer experience by creating golden paths, abstracting complexity, providing reusable building blocks, and measuring success through developer happiness and velocity. Unlike traditional ops roles, platform engineers act as product managers for internal tools, designing feedback loops and working closely with SREs while maintaining the balance between abstraction and flexibility.

  14. 14
    Article
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    AI Agent / Agentic : beyond the buzzword

    AI agents are software systems that act autonomously to achieve goals by perceiving situations, making decisions, and adapting to changes. They are used in areas where tasks are complex or continuous, requiring real-time adjustments. While they can help in various domains, they still need structured oversight and clear goals to function optimally. The technology continues to evolve, integrating more into both work and home environments.

  15. 15
    Article
    Avatar of faunFaun·43w

    Serverless Cost-Efficient CI/CD with Jenkins on AWS Fargate: Dynamic Agents and Persistent Storage with EFS

    A comprehensive guide for setting up Jenkins on AWS Fargate with dynamic agent provisioning and persistent storage using EFS. The tutorial covers creating ECS clusters, configuring task definitions for both Jenkins master and agents, setting up dual load balancers (ALB for web UI and NLB for agent communication), and implementing cost-efficient CI/CD pipelines that automatically scale agents based on workload demand.

  16. 16
    Article
    Avatar of faunFaun·32w

    My Kubestronaut journey

    A developer shares their experience completing all five CNCF Kubernetes certifications (KCNA, CKA, KCSA, CKAD, and CKS) over three months to become a Kubestronaut. The post details exam scores, preparation strategies, study resources used, and technical challenges encountered during the certification process, particularly with the PSI Secure Browser on Mac. Includes a GitHub repository with study notes, course recommendations, and practical tips for each certification exam.

  17. 17
    Article
    Avatar of faunFaun·34w

    OWASP Top 10 for Appliction Programming Interfaces

    Explores the OWASP API Security Top 10, detailing critical vulnerabilities like broken object level authorization, broken authentication, and SSRF. Each vulnerability is explained with practical code examples showing how attackers exploit these weaknesses and what defenses developers should implement. Includes guidance on authorization checks, rate limiting, input validation, configuration hardening, and API inventory management to prevent data breaches and system compromises.

  18. 18
    Article
    Avatar of faunFaun·34w

    Deploying a Complete RAG Ecosystem with a Single Command: My Ultimate Docker Stack

    A comprehensive Docker Compose stack that deploys a complete RAG (Retrieval-Augmented Generation) infrastructure with a single command. The setup includes Ollama for local LLM execution, Qdrant for vector search, MongoDB for document storage, Redis for caching, Neo4j for knowledge graphs, Keycloak for authentication, and n8n for workflow automation. The stack can be configured for CPU-only, GPU-accelerated, or external API usage, with automated setup scripts that handle dependencies and provide instant access to all services. Neo4j integration enables advanced relationship mapping between documents and entities, enriching context beyond traditional vector search.

  19. 19
    Article
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    How To Integrate Security Into Ansible? 🔒

    Integrating security into Ansible is straightforward and can be enjoyable. Key methods include using SSH keys for secure connections, managing user permissions with Ansible modules, encrypting sensitive information with Ansible Vault, configuring firewall rules, and ensuring regular package updates. These practices enhance security while maintaining efficiency in managing infrastructure.

  20. 20
    Article
    Avatar of faunFaun·30w

    API-First or AI-First? The New Strategic Dilemma

    Explores the strategic shift from API-first to AI-first architecture, examining trade-offs between determinism and adaptability, control and development speed. Argues that most organizations need a hybrid approach: robust APIs for critical operations combined with AI orchestration layers for intelligent user-facing features. Provides a decision framework based on criticality, input variability, rate of change, ecosystem ambitions, and team capabilities to determine which architectural approach fits different system components.

  21. 21
    Article
    Avatar of faunFaun·46w

    How to Implement Robust WAF Protection for Web Applications: Block SQL Injection, XSS, and DDoS Attacks

    A comprehensive guide to implementing AWS WAF protection for web applications, covering deployment of a vulnerable test application (DVWA) on EC2, CloudFront distribution setup, and WAF configuration with managed rules for SQL injection and XSS protection. Includes custom rate limiting rules, S3 logging setup, and practical testing methods to verify protection against common web attacks.

  22. 22
    Article
    Avatar of faunFaun·43w

    How We Built Our First Golden Path: A Platform Engineering Story

    A practical guide to building the first golden path in platform engineering, focusing on creating a streamlined backend service deployment process. The story emphasizes starting with developer journeys rather than tools, treating the platform as a product with feedback loops, and scaling through trust rather than mandates. Key lessons include choosing principles before technology, building one perfect path before scaling, and maintaining simplicity while gathering continuous feedback from development teams.

  23. 23
    Article
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    How to check whether the particular port is in use : Java

    When facing issues with a REST-based web service installation in WIX, it was discovered that the application couldn't start because the specified port was already in use. To check port usage, the Socket class in Java was utilized to validate if a specified port is in use on the localhost.

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