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How Kubernetes Calculates Access Permissions Using RBAC Rules

RBAC in Kubernetes defines access control by determining who can perform actions on resources.
Authentication in Kubernetes involves validating requests using various methods like client certificates, bearer tokens, or OIDC tokens.
Authorization in Kubernetes is executed by the RBAC authorizer by evaluating identities against Roles and ClusterRoles defined in the cluster.
RBAC authorizer matches rules based on verbs, resources, and namespaces to determine access permissions.

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Why I Built hawk - A CLI Tool That Brings pandas-Like Operations to JSON/YAML/CSV

An AWS engineer developed hawk, a CLI tool for JSON/YAML/CSV data analysis.
Hawk simplifies data extraction and analysis tasks with a unified query language.
It combines the strengths of awk, jq, and pandas, providing flexibility and speed.
Hawk offers instant structure understanding and supports multiple formats like JSON, YAML, and CSV.

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What Makes a System Truly Fault-Tolerant?

A truly fault-tolerant system is one that expects failures and gracefully recovers while maintaining a seamless user experience.
Key steps to achieve fault tolerance include eliminating single points of failure, using circuit breakers to prevent cascading failures, enabling self-healing mechanisms, ensuring idempotency to avoid duplicate side effects, and implementing graceful degradation strategies.
Monitoring relevant metrics and alerting actionable events, testing for resilience under stress conditions, preparing for regional outages, and fostering a culture that anticipates failures are vital components of building a fault-tolerant system.
By following guidelines such as removing SPOFs, utilizing circuit breakers, supporting self-healing processes, maintaining idempotency, handling graceful degradation, and promoting a resilient culture, a truly fault-tolerant system can be developed.

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Dev

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Why Your Development Team Is 40% Slower Than Your Competitors (And How to Fix It)

Your development team might be 40% slower than competitors due to productivity gaps.
Inefficient workflows, communication chaos, and technical debt contribute to slower feature delivery.
Implementing focused work blocks, streamlining communication, and automating tasks can boost productivity.

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Dev

123

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Optimizing Cloud Storage for Global Content Delivery and Recovery

Cloud storage optimization for global content delivery and recovery on Azure involves setting up a robust storage strategy.
Steps include creating a highly available storage account named 'publicwebsite' with read-access geo-redundancy and anonymous public access for web content.
Organizing content in a blob storage container, configuring anonymous read access, practicing file uploads, enabling soft delete for easy file recovery, and setting up blob versioning are critical elements of the optimization process.
The article provides detailed instructions on implementing these key features to ensure data accessibility, security, and historical integrity for websites hosted on Azure cloud storage.

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Dev

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How to Secure SSH Access with Short-Lived Certificates

SSH keys provide a secure way to access remote servers without passwords but do not have expiration dates, posing a security risk if compromised.
Signing Certificate Authority allows for creating short-lived certificates to enforce expiration dates on SSH access for enhanced security.
Steps to create expiring SSH keys involve setting up a CA key on the server, configuring the local device, and generating and signing user SSH keys.
Using expiring SSH keys enhances security by minimizing potential damage if keys are compromised and fits well with Just-in-Time access tools for increased server security.

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Dev

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The Hidden Realities of Cloud Migration: Lessons from the Trenches

In theory, cloud migration seems straightforward with assessment, planning, and execution.
Real-world cloud migration poses challenges like dependency gaps and unexpected issues.
Lessons learned include cost optimization, handling legacy systems, and collaboration insights.
Recommendations stress validating tools, pre-migration reboots, and thorough documentation for success.
Cloud migration is a complex process requiring adaptability, planning, and collaboration for success.

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Serve Static React Files with NGINX in a Multi-Stage Docker Build

The article discusses how to serve a React app, specifically a custom build, using a multi-stage Docker build and NGINX to efficiently serve static files.
The process involves building the app in a Docker container, extracting the static files, such as SSR output, and configuring NGINX to serve these files at a specific path.
The multi-stage Dockerfile includes stages for building the app and serving it with NGINX. The NGINX config specifies how to serve the static output, mapping paths, and ensuring strict routing.
This setup is recommended for deploying custom SSR builds, serving lightweight screens, isolating app parts to different subpaths, and eliminating the need for Node.js to run in production, resulting in smaller images and faster starts.

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Dev

124

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Kubernetes Feels Complicated. It's Time To Fix That.

Kubernetes is a powerful tool but can feel complex and overwhelming for beginners in the tech community.
A new series, 'Kubernetes: From Zero to Hero,' aims to simplify Kubernetes learning by providing clear, practical, and accessible guidance.
The series will focus on hands-on exercises, include all necessary resources in each post, and build knowledge progressively.
The series roadmap includes topics from basic concepts to advanced topics, with the goal of becoming a comprehensive Kubernetes resource.

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Medium

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Docker and the Moment the World Needed It

Shipping software before Docker was challenging and time-consuming, requiring manual configurations and custom tools.
Docker revolutionized software shipping by providing a standardized way to package, execute, and network applications.
Docker's core components included packaging with Docker images, predictable execution with container runtime, and a basic networking model.
The Docker team continued to innovate with features like Docker Compose for multi-container systems and clustering solutions like Docker Swarm and Kubernetes.

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Dev

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How to provide shared file storage for the company offices.

Smooth collaboration between company offices in today’s digital workplace is crucial for productivity.
Setting up shared file storage across offices involves creating and configuring a storage account for Azure Files.
Steps include creating a storage account, setting up file shares with directories, configuring and testing snapshots, and restricting storage access to selected virtual networks.
These steps ensure fast, secure, and reliable access to shared files for teams in different locations.

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Dev

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Linux cheat sheet for day-to-day actions...!!!

Linux cheat sheet for day-to-day actions to make using the operating system easier.
Includes commands for file and directory navigation, operations, searching and filtering, system info and monitoring, and networking.
Key commands include pwd, ls, cd, touch, cp, mv, rm, cat, find, grep, uname, top, df, ip, ping, curl, wget, netstat, and more.
This cheat sheet serves as a starting point for Linux users, emphasizing the importance of practice for better understanding.

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Dev

141

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CI/CD Meets Monitoring: My Full DevOps Stack with Node.js, Kubernetes, and GitHub Actions

A developer shared their journey of building a fully monitored, Kubernetes-powered CI/CD pipeline with Node.js, Kubernetes, and GitHub Actions.
Key components include a Node.js backend with Prometheus-compatible metrics, Dockerized application, Kubernetes deployment using YAML manifests on Minikube, and real-time monitoring with Prometheus and Grafana.
CI/CD is managed through GitHub Actions triggering Docker image builds, pushes to Docker Hub, and optional Kubernetes deployment if kubeconfig is provided, all secured using GitHub Secrets.
The stack involves technologies like Node.js, Express, Docker, Kubernetes, GitHub Actions, Prometheus, Grafana, and YAML, with future plans to add alerting and consider managed deployment on GKE or EKS.

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Dev

197

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🚀 LookAtni File Markers — Invisible Markers to Structure Your Files Like Magic

LookAtni File Markers is a VSCode extension that allows users to mark specific parts of code within the file itself for extraction, navigation, and automation.
Users can mark blocks using a simple visual syntax and then navigate through these points in VSCode, extract the marked blocks to external files, and perform actions like validation and synchronization automatically.
The extension can be used for various purposes such as technical documentation, educational content creation, code reviews, and integration with CI/CD pipelines.
A built-in CLI tool is coming soon, enabling commands for extraction and validation, making it easier for integration with GitHub Actions or build pipelines.

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Dev

348

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Correction. 🚀 RinaWarp Terminal v1.0.9 Beta Access - NOW AVAILABLE!

RinaWarp Terminal v1.0.9 Beta Access is now available for purchase, introducing enhanced AI, cloud settings synchronization, team collaboration features, and plugin ecosystem foundation.
Beta pricing ranges from $29 to $59, with various benefits like exclusive access, direct developer communication, and learning and networking opportunities.
The release includes 30% performance improvements, a beta timeline from beta sales opening today to public release on March 10, and special launch offers like the Early Bird Special.
Interested users can join by visiting the pricing page, selecting their beta access level, completing secure checkout, and receiving a beta key via email to join the private beta community.

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