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DevOps

DevOps is a set of practices that combines software development (Dev) and IT operations (Ops) aimed at shortening the systems development life cycle and providing continuous delivery with high software quality. It emphasizes collaboration, automation, and integration between developers and IT professionals to improve the speed and quality of software deployment.

Kubernetes error: User ‘system:serviceaccount:default:default’ cannot get services in the namespace

Updated: Jan 31, 2024
Understanding the Error This error message you see in Kubernetes typically indicates that the ‘system:serviceaccount:default:default’ service account does not have the necessary permissions to perform the ‘get’......

Dynamic Configuration in Kubernetes Using ConfigMap (with Examples)

Updated: Jan 31, 2024
Introduction As cloud-native applications evolve to be more flexible and scalable, Kubernetes has become the standard for orchestrating containerized applications. One of the powerful features of Kubernetes is the ability to......

Setting Up Ingress Controllers and Rules in Kubernetes

Updated: Jan 31, 2024
Introduction When it comes to managing external access to the services in a Kubernetes cluster, Ingress is an API resource that controls the HTTP and HTTPS routes to services. Ingress Controllers are responsible for the implementation......

How to Configure Load Balancing in Kubernetes

Updated: Jan 31, 2024
Introduction Load balancing is a critical aspect of deploying scalable, high-availability applications. When working with Kubernetes, configuring load balancing efficiently is essential to ensure that your applications can handle the......

Securing the Master Node in Kubernetes: A Practical Guide

Updated: Jan 31, 2024
Introduction As Kubernetes clusters become more prevalent, securing the master node, also known as the control plane, has never been more crucial. The master node is responsible for the orchestration of containers and the overall......

How to Set Up a Highly Available Master Node in Kubernetes

Updated: Jan 31, 2024
Introduction Ensuring high availability within a Kubernetes cluster is critical for maintaining a reliable and resilient infrastructure. In this tutorial, we will walk you through setting up a highly available master node in......

Role and Responsibilities of a Master Node in Kubernetes

Updated: Jan 31, 2024
Introduction Kubernetes, an open-source platform designed to automate deploying, scaling, and operating application containers, has become a cornerstone of modern application infrastructure. Understanding the master node’s role......

Monitoring Node Health and Performance in Kubernetes (with Examples)

Updated: Jan 31, 2024
Introduction Monitoring is a critical aspect of Kubernetes administration, ensuring the health, performance, and reliability of both the cluster and the applications running on it. Node performance issues can lead to higher latency,......

How to Create and Manage Pods in Kubernetes

Updated: Jan 31, 2024
Overview Kubernetes is a powerful container orchestration system that automates the deployment, scaling, and operations of application containers across clusters of hosts. At the heart of Kubernetes is the pod, which is the smallest......

How to Use Kubernetes on DigitalOcean

Updated: Jan 31, 2024
Introduction Kubernetes has become an essential tool for DevOps professionals, thanks to its powerful management of containerized applications across a cluster of machines. DigitalOcean offers a managed Kubernetes service that......

How to Set Up a Kubernetes Cluster on AWS

Updated: Jan 31, 2024
Introduction Setting up a Kubernetes Cluster on AWS can seem like a daunting task, but with Amazon’s Elastic Kubernetes Service (EKS), the process becomes more streamlined and accessible. In this tutorial, we will walk through......

Kafka: Adding partitions to an existing topic (with examples)

Updated: Jan 31, 2024
Introduction Apache Kafka is a robust message broker that excels at handling real-time data feeds. A fundamental concept within Kafka is that of topics, which are the categories or feeds for published messages. As a Kafka topic......