how-to - KubeBlogs - DevOps and Cloud content

Sign in Subscribe

how-to

A collection of 28 posts

How to: Process KML Files with Python's Shapely Library For Detecting Geo-boundaries

How to: Process KML Files with Python's Shapely Library For Detecting Geo-boundaries

Introduction to KML Files KML (Keyhole Markup Language) is an XML-based file format used for displaying geographic data in applications like Google Earth, Google Maps, and other GIS (Geographic Information System) applications. KML files contain geographic features such as points, lines, and polygons with associated metadata. Common Use Cases for

How to Deploy New Images in a VM Without SSH | Secure Container Deployment

How to Deploy New Images in a VM Without SSH | Secure Container Deployment

Table of Contents * Introduction * Step-by-Step Implementation * Conclusion Introduction Most deployment workflows need SSH access to production VMs. This creates security risks and adds operational complexity. You need to manage SSH keys across environments and expose your infrastructure to potential attacks. Modern DevOps needs secure, automated deployment pipelines that work without

How to Avoid GitHub Token Rate Limiting Issues | Complete Guide for DevOps Teams

How to Avoid GitHub Token Rate Limiting Issues | Complete Guide for DevOps Teams

Introduction GitHub API rate limits can break your CI/CD pipelines and automation workflows. When your GitHub Actions fail with 403 or 429 errors, it's usually because you've hit the rate limit ceiling. Understanding these limits and implementing proper strategies can save hours of debugging and

How to Set Up IAM Roles for EKS Nodes and Manage Docker Config Secrets

How to Set Up IAM Roles for EKS Nodes and Manage Docker Config Secrets

Introduction Running containerized applications on Amazon EKS requires pulling images from private registries like ECR, Docker Hub, or other repositories. This needs proper authentication at both the node level and Kubernetes level. This guide covers two essential EKS security components: 1. IAM Role Configuration: Setting up IAM roles for EKS

Detect Time zones | Django documentation

Detect Time zones | Django documentation

Managing user time zones is a critical challenge in modern web applications and Django development. When your Django application serves users across different time zones globally, displaying dates and times in their local time zone becomes essential for optimal user experience and application usability. This comprehensive guide shows you practical

GKE Workload Identity Federation: Secure Google Cloud Access for Kubernetes Pods Without Service Account Keys

GKE Workload Identity Federation: Secure Google Cloud Access for Kubernetes Pods Without Service Account Keys

Introduction When applications run on Google Kubernetes Engine (GKE), they often need to call Google Cloud services like Cloud Storage, Pub/Sub, or BigQuery. The traditional pattern was to place JSON service account keys in Kubernetes Secrets and mount them in pods. That approach creates security risks and operational overhead.

How to Deploy AWS Lambda Functions Using GitHub Actions:Complete CI/CD Automation Guide.

How to Deploy AWS Lambda Functions Using GitHub Actions:Complete CI/CD Automation Guide.

Introduction Deploying AWS Lambda functions manually can be time-consuming and error-prone, especially when managing multiple serverless functions across different environments. GitHub Actions provides a powerful way to automate this process, ensuring consistent deployments and reducing human error in your CI/CD pipeline. This comprehensive guide shows you how to set

How to Avoid Pushing Secrets into Docker Images | Complete Security Guide

How to Avoid Pushing Secrets into Docker Images | Complete Security Guide

Container security starts with protecting sensitive data during the build process. When secrets leak into Docker images, they become accessible to anyone with image access, creating significant security vulnerabilities. This guide provides practical techniques to prevent secrets from entering your Docker images. Understanding the Problem Secrets accidentally included in Docker

Chart.js Django Tutorial: Create Interactive Charts and Dashboards.

Chart.js Django Tutorial: Create Interactive Charts and Dashboards.

Introduction Data visualization is crucial for modern web applications, especially when dealing with analytics, dashboards, or business intelligence features. Django, with its robust backend capabilities, combined with Chart.js for frontend charting, creates a powerful combination for building data-rich applications. This guide will walk you through integrating Chart.js into

How to Send Emails Directly to Slack Channels: Complete Integration Guide

How to Send Emails Directly to Slack Channels: Complete Integration Guide

Did you know you can send emails directly to a Slack channel? This can be really powerful, especially if you have legacy applications that don't support webhooks for sending messages on Slack. Slack provides an email app that transforms any channel into an email inbox, giving each channel

How to Avoid Issues with Docker Compose Due to Same Folder Names | Project Isolation Best Practices

How to Avoid Issues with Docker Compose Due to Same Folder Names | Project Isolation Best Practices

Introduction Docker Compose is a powerful tool for managing multi-container applications, but it has a hidden gotcha that can cause significant headaches in development environments. When working on multiple projects within the same machine or VM, Docker Compose automatically uses your project's root directory name as the default

How to Serve Static Files in Django with WhiteNoise

How to Serve Static Files in Django with WhiteNoise

Introduction Static file handling in Django production environments can be complex. When you deploy a Django application, you need to serve CSS, JavaScript, images, and other static assets efficiently. While Django's built-in static file handling works for development, it's not suitable for production due to performance

How to Use Kubernetes Reflector | Simple Secret Management Across Namespaces

How to Use Kubernetes Reflector | Simple Secret Management Across Namespaces

Introduction Managing Kubernetes secrets across multiple namespaces is a common pain point for DevOps teams. Manually creating and maintaining identical secrets in every namespace not only increases operational overhead but also introduces security risks through inconsistent configurations. Kubernetes Reflector solves this challenge by automatically replicating secrets across namespaces, ensuring consistency

How to Implement S3-Based DAG Management for Apache Airflow | Enterprise-Grade Workflow Orchestration

How to Implement S3-Based DAG Management for Apache Airflow | Enterprise-Grade Workflow Orchestration

Introduction Apache Airflow has become the de facto standard for workflow orchestration in modern data engineering and DevOps environments. However, traditional DAG management approaches often create operational bottlenecks that significantly impact development velocity and system reliability. This article explores how implementing S3-based DAG management can transform your Airflow deployment from

How to avoid Race Conditions and Deadlocks in Django (Step-by-Step Guide).

How to avoid Race Conditions and Deadlocks in Django (Step-by-Step Guide).

Introduction Race conditions and deadlocks are silent killers in Django applications that can cause data corruption, inconsistent states, and mysterious bugs that are hard to reproduce. When multiple processes or threads access the same database records simultaneously, you're walking on thin ice. This guide shows you how to

How to Enable AWS CLI Tab Completion on zsh and bash

How to Enable AWS CLI Tab Completion on zsh and bash

Introduction Command-line tab completion speeds up AWS CLI usage and reduces typos. With a few lines in your shell profile, you can enable context-aware completions for services, subcommands, parameters, and even resource ARNs. This guide shows the minimal, reliable setup for both Bash and Zsh on macOS and Linux, including

How to Run GPU Workloads on ECS: Complete Implementation Guide

How to Run GPU Workloads on ECS: Complete Implementation Guide

Introduction Running GPU workloads on Amazon ECS requires careful planning and specific configurations that differ from standard CPU-based deployments. Organizations need GPU computing for machine learning training, inference workloads, video processing, and scientific computing, but ECS GPU support comes with important limitations and requirements ECS GPU support is only available

How to Schedule Simple Tasks Using APScheduler | A DevOps-Focused Guide

How to Schedule Simple Tasks Using APScheduler | A DevOps-Focused Guide

Table of Contents * Introduction * What is APScheduler? * Step-by-Step Implementation * Advanced Scheduling Patterns * Best Practices * Conclusion Introduction Imagine you're managing a production web application that needs to run several critical maintenance tasks automatically: database backups at 2 AM, health checks every 5 minutes, and log cleanup every Sunday at

How to Create Custom Metrics on Log Groups Using IaC

How to Create Custom Metrics on Log Groups Using IaC

Your application logs are full of useful data, but CloudWatch doesn't automatically turn them into metrics. You need metric filters to extract numbers from log events and create alarms that actually matter. This guide shows you how to set up custom metrics from log groups using Infrastructure as

How to manage multiple AWS accounts with AWS CLI Profiles

How to manage multiple AWS accounts with AWS CLI Profiles

1. What Are AWS CLI Profiles? AWS CLI profiles allow you to configure and manage multiple sets of AWS credentials and settings. Each profile corresponds to a specific AWS account or role, enabling you to seamlessly switch between them while using the AWS CLI. 2. Configuring Multiple Profiles To set

How to Schedule Cron Jobs in Django Using Celery Beat

How to Schedule Cron Jobs in Django Using Celery Beat

Introduction Scheduling background jobs is a common requirement in Django applications. Celery, combined with Celery Beat, is a popular way to run periodic tasks like sending notifications, cleaning up data, or syncing with external services. In a multi-vendor SaaS platform, each vendor may need their own schedule for the same

How to Monitor Available IPs in a Subnet Using AWS Lambda

How to Monitor Available IPs in a Subnet Using AWS Lambda

Running out of IP addresses in your subnet can bring your infrastructure to a halt. When your applications can't get new IP addresses, deployments fail, auto-scaling breaks, and new services won't start. This problem hits hardest during traffic spikes or when teams deploy multiple services simultaneously.

How to Enforce MFA on AWS for All IAM Users with Console Access

How to Enforce MFA on AWS for All IAM Users with Console Access

Introduction If you’re still not using AWS Identity Center for access control on your AWS account then most likely you are stuck with the old IAM users pattern. If you’re someone who hasn’t enabled MFA on the IAM users yet then you must do that immediately. Most

How to Host a Static Website Using Amazon S3

How to Host a Static Website Using Amazon S3

Amazon S3 (Simple Storage Service) lets you host static websites. Static websites are made up of HTML, CSS, JavaScript, and media files — no server-side code is needed. This guide will walk you through the steps to set up and publish a static website using an S3 bucket. Step 1: Create

How to Resolve Django Migration Sequence Conflicts in Team Development

How to Resolve Django Migration Sequence Conflicts in Team Development

Introduction Django migrations are essential for database schema management, but they can become problematic when multiple engineers work on the same application simultaneously. One common issue is migration sequence conflicts — when two engineers create migrations with the same sequence number, causing Django to throw exceptions during deployment. This guide shows