Articles about kubernetes

Resolving Weird Authorization Issue in Kubernetes

This article provides a step-by-step guide to troubleshoot and resolve a weird authorization issue encountered in a Kubernetes cluster. Keywords: Kubernetes, Authorization, Troubleshooting.

Troubleshooting Nginx Ingress Controller 404 Errors on Kubernetes Cluster

Having trouble with Nginx Ingress Controller giving 404 errors on your bare metal Kubernetes cluster, even though the endpoints show correctly? Learn how to troubleshoot this issue. Read more for a detailed tech support guide.

Resolving Nginx Ingress 404 Error on Kubernetes Cluster

This article provides a solution for the Nginx Ingress 404 error on a Kubernetes cluster, even though the endpoints appear correctly. We'll explore possible causes and solutions to help you resolve the issue.

Consul-k8s Helm Install Fails on EKS with ALB Configuration

Having trouble installing Consul on EKS via Helm with ALB configuration? Learn about common issues and solutions to overcome them in this tech support article.

Understanding NFS Server 4.1 Client Limitations in Kubernetes Data Storage

Explore the client limitations of NFS Server 4.1 when used as a data store in Kubernetes pods. Learn about the single connection setup and its impact on performance. Optimize your NFS server usage for improved tech support.

Client Failing Due to Many Open Connections in Kubernetes Environment

In a Kubernetes environment, one pod is running a client that sends a varying number of concurrent long-running inference requests to the cluster (pods) servers. The client is failing due to many open connections. This article provides guidance on how to troubleshoot and resolve this issue.

Deploying Redis Cluster on Kubernetes: Master-Slave Deployment Strategy

Learn how to deploy a Redis Cluster on Kubernetes using the Master-Slave deployment strategy. This approach provides high availability, scalability, and easy management for your Redis Clusters. Read more to get started with this tech support guide.

Creating a Kubernetes Cluster Environment with Vagrant on Ubuntu 22.04.1 using VMware Type 2 Hypervisor

This article will guide you through creating a Kubernetes cluster environment using Vagrant on an Ubuntu 22.04.1 host operating system with a VMware Type 2 Hypervisor. Let's get started...

Building a Private Cloud with Old Hardware: A Comprehensive Guide

Learn how to build a private cloud using old hardware. This comprehensive guide covers Linux distribution selection, containerization with Docker, and orchestration with Kubernetes.

Understanding Ping and ARP in macOS VM Bridging, OpenWRT Routers, and Kubernetes Clusters

Learn about the role of ping and ARP in macOS virtual machines, OpenWRT routers, and Kubernetes clusters. This SEO-optimized abstract introduces the key concepts of VM bridging, subnets, and pod CIDR while inviting the audience to read more about troubleshooting and managing network connectivity in tech support.

Prometheus Stack Operator Not Scraping Metrics for App? Here's a Small Demo to Help

Having trouble with the Prometheus Stack Operator not scraping metrics for your application? This article provides a concise demo to help you collect and view cluster metrics using the kube-prometheus-stack. Learn how to get metrics and troubleshoot your issue.

Prometheus Stack Operator Not Scraping Metrics of Cluster Application

Having trouble with the Prometheus Stack Operator not scraping metrics of your cluster application? Learn how to collect and view cluster metrics with a small demo. Read more to find a solution to this issue.

View Per Core Statistics of Kubernetes Pods with mpstat

Learn how to view per core usage statistics of Kubernetes pods running on a Linux host or Kubernetes node. This article will guide you on how to use mpstat to find detailed core-level stats, even when assigning a specific CPU to a pod.

Understanding the Difference: Adding a Node to an Existing Node Pool vs Creating a New Node Pool in a GKE Cluster

Learn about the differences between adding a node to an existing node pool and creating a new node pool in a GKE cluster. This article can help you troubleshoot application failures, such as the EOL version application failing error with the message 'failed getting container id', in GKE version 1.26.8.

Prometheus & Grafana: Monitoring Kubernetes Persistent Volume Claims

Learn how to set up a Prometheus and Grafana dashboard to monitor Kubernetes Persistent Volume Claims (PVC). Discover the current free storage and more. This SEO-optimized guide assists you in monitoring your K8s clusters effectively.

Converting WireGuard Docker Setup to Kubernetes: Handshake OK, No Internet Access

Having trouble accessing the internet on WireGuard clients configured for Docker Kubernetes host networking? This article provides a solution to achieve internet access after a successful handshake.

Understanding the 'Defaulted Container' Error in Kubectl Logs

In this tech support article, we will discuss the 'Defaulted container' error message that sometimes appears in kubectl logs. We will explain what this error means, and provide some suggestions for troubleshooting and resolving it. If you're a Kubernetes user and you've encountered this error, this article is for you.

Kubean Failed! Error Making Cluster with Daocloud: A Tech Support Guide

In this tech support article, we will address the issue of a failed Kubean attempt to make a cluster using Daocloud. If you're experiencing this error, this guide will help you resolve it. We'll discuss possible causes and solutions for the Kubean error and how to successfully make a cluster using Daocloud. Keywords: Kubean, Daocloud, cluster, tech support, error

Setting up Home Networking with Raspberry Pi Router for Kubernetes Lab

Many computer enthusiasts aim to convert their home labs for experimentation running Kubernetes. This article explains how to set up a home networking solution using a Raspberry Pi 5 (RP5) as a router with Ubuntu, MacMini with Talos Linux, and an AMD PC with Talos.

Configure Local Machine to Use Another Local Machine's DNSMasq for Local Domains in OpenShift Network

Learn how to configure your local machine to use another local machine's DNSMasq to resolve local domains in an OpenShift network.

Unreachable Endpoints in Cilium Kubernetes: Nodes Specific Issue

This article discusses the issue of unreachable endpoints in a Cilium Kubernetes cluster on specific nodes. It covers possible causes and solutions to help you resolve the issue.

Docker on Windows 11 (Prox64) with Kubernetes: File Sharing Not Working

Users of Docker Desktop on Windows 11 Prox64 with Kubernetes have reported issues with file sharing. This article provides a suggested solution.

Docker on HyperV: Persistent Volume Not Working with Windows Prox64, Docker Desktop 4.25.1, and Kubernetes

Users report that Docker persistent volumes are not working correctly on HyperV with Windows Prox64, Docker Desktop 4.25.1, and Kubernetes. This article provides potential solutions for troubleshooting and resolving the issue.

Docker on WSL + Kubernetes Crashes in Windows 11

This article discusses the issue of Docker crashing when using Kubernetes on Windows 11 WSL (Windows Subsystem for Linux). We provide suggested solutions to help resolve the problem.

High Availability Redis Cluster on K8s: Managing Shards and Master Node

Learn how to manage Redis Cluster for high availability with shards and master node on Kubernetes. Master node and replica nodes, data division, and shard management techniques are covered.

Resolving Minikube Ingress Hosts: A Step-by-Step Guide

Learn how to resolve Minikube Ingress hosts and set up DNS name resolvers for smooth Kubernetes deployments. Follow this guide for Minikube installation and configuration.

Achieving Full Cone NAT Connectivity inside K8s Pods: A Deep Dive

Learn how to configure Full Cone NAT connectivity for applications running inside Kubernetes pods. Discover the differences in implementation and explore the use of kubectl run natdisco.

NodePort Service in Docker Desktop on MacOS Not Actually Binding Port?

User reports that NodePort service in Docker Desktop on MacOS was working fine today but suddenly stopped, giving an error message trying to connect to the port. This article provides suggestions for troubleshooting and potential solutions.

K3S Cluster Issue: Failed to Query BPF Programs with cgroup configHooks process

Encountered an issue with a K3S cluster where nodes couldn't define their config files due to an API server not running. Investigated log files and found a failed `bpf_prog_query(BPF_CGROUP_DEVICE)` call within the `cgroup configHooks process`. In this article, we will explore possible solutions to resolve this issue.

Troubleshooting Kubernetes Cluster on Azure VM: Resolve TLS Error in 'kubectl get pods'

Encountered TLS error while running 'kubectl get pods' on a Kubernetes cluster deployed on an Azure VM? Learn how to resolve this issue by ensuring the correct public IP is configured.

Azure Kubernetes Pod Won't Start Unless You Rename the Azure Disk

This article discusses an issue where an Azure Kubernetes Pod fails to start when using a specific named disk created from a snapshot. The suggested solution is to rename the disk.

Boosting Kubernetes Performance for Debian VM: A Spring Boot Microservices Case Study

Learn how to optimize Kubernetes performance on a Debian VM by configuring resources using Helm charts for a Spring Boot microservices application.

Adding Additional IP Cluster TLS/SSL Certificate to K3S Kubernetes Cluster

Learn how to add an additional IP cluster TLS/SSL certificate to a K3S Kubernetes cluster. This guide assumes a 3-node cluster with control-plane, etcd, and worker nodes.

Kubernetes Cluster: Grafana Agent Fails to Reach Pods via Cluster IP Service

This article provides a solution for the issue where the Grafana agent fails to reach pods via the cluster IP service in a Kubernetes cluster running on Ubuntu nodes.

WireGuard Client Works Perfectly with Docker and Kubernetes: Troubleshooting Connectivity Issues

Learn how to set up and troubleshoot WireGuard client connections in Docker and Kubernetes environments. Resolve unique connectivity issues in your Kubernetes configuration.

Accessing External Public URL in Helm Chart

This article explains how to access an external public URL using a Helm chart. We will use the provided example of an ingress resource in a Helm chart located at <https://github.com/rcbandit111/external_domain_helm_chart_poc/blob/main/pod-chart/templates/ingressresource.yaml>.

Troubleshooting: Kubernetes/kubeadm - Control Plane API Server Rebooting

New to Kubernetes, trying to set up DDNS containers in practice and moving on to more complex stuff. Originally started with Minikube and IPv6 DDNS containers, now encountering an issue with the Control Plane API Server rebooting. Let's explore some possible solutions.

Migrating Docker Projects to Private Bridges in Kubernetes

Learn how to migrate Docker projects to use Private Bridges in Kubernetes for improved security and network isolation. This tutorial covers Docker project setup, Kubernetes configuration, and the benefits of using Private Bridges.

K3s Kubernetes Cluster with MetalLB: Cellphones Lose Connection

This article discusses an issue where cellphones lose connection when using a K3s Kubernetes cluster with MetalLB. The MetalLB IP range is assigned to services, and accessing these IPs through keepalived is described. Understand the root cause and possible solutions.

Expanding Fintech App: Do You Need Kubernetes for Credit Card Integration?

Learn how Kubernetes can help manage and scale your fintech app's credit card integration with a third-party company.

VirtualBox: Host-Bridged Network Adapter Sometimes Starts, Sometimes Not on CentOS 7 for VM with Multiple Kubernetes Installations

Users attempting to learn Kubernetes with multiple VMs on CentOS 7 encounter issues with the VirtualBox Host-Bridged Network Adapter sometimes starting and sometimes not. This article offers potential solutions.

How to Find Per-Core Usage Statistics for a Kubernetes Pod on Linux

Learn how to find per-core usage statistics for a Kubernetes pod running on a Linux host. This guide will walk you through using mpstat to gather detailed performance data, even when pods are assigned specific CPU resources.

Terraform-Helm: Kubernetes Cluster Unreachable Error when Deploying Neo4j Helm Chart

This article provides a solution for users who encounter the error 'Terraform-Helm: Kubernetes cluster unreachable: exec plugin: invalid apiVersion client.authentication.k8s.io/v1alpha1' when deploying the Neo4j Helm chart. Learn how to resolve the issue and successfully deploy your Neo4j cluster using Terraform and Helm.

Image Pull Backoff Error: Could Not Pull Image from Docker Registry

Learn how to troubleshoot the image pull backoff error when deploying containers in Kubernetes. This error occurs when the kubectl get pods command shows that the pod is stuck in the ImagePullBackOff status. This article provides a step-by-step guide to resolving this issue and getting your containers up and running.

Kubectl Ingress: A Comprehensive Guide for Tech Support

Learn how to use Kubectl Ingress to manage your Kubernetes ingress resources. This guide provides a step-by-step tutorial on how to create, update, and delete ingress resources using Kubectl. Improve your tech support skills and enhance your knowledge of Kubernetes with this comprehensive guide.

Kubernetes Pods in Microk8s Cluster Unable to Access Internet Despite Resolving Addresses

Having trouble with Kubernetes pods in a Microk8s cluster that can resolve addresses but can't access websites or the internet? Learn about a possible solution in this tech support article.

Efficiently Detect Changes in Kubernetes API with StreamResponses in Ruby on Rails

Learn how to use Kubernetes API's watch endpoint and StreamResponse in Ruby on Rails to efficiently detect changes in resources. This article will provide a step-by-step guide on how to implement this feature, helping you to keep your applications up-to-date with the latest data. Read more to get started.

Can't Access Internet on Kubernetes Pods: Troubleshooting Network Configuration

Articles about kubernetes | UserComp.com