What to Do If Your Application Causes High Load in Kubernetes When an application inside your Kubernetes cluster starts consuming too much CPU or memory, it can lead to degraded node performance, evicted pods, or even node instability. Here’s how to troubleshoot and fix it. 1. Identify the Culprit Use kubectl top to check which pods are consuming the most resources: kubectl top pods --all-namespaces To dive deeper: kubectl describe pod <pod-name> -n <namespace> Check for high CPU/Memory and events like OOMKilled. ...

Introduction An I/O error in a Proxmox VM can bring a virtual machine to a halt. These errors often relate to disk access issues and can indicate underlying hardware problems, misconfigurations, or storage corruption. In this guide, we’ll explore how to diagnose, understand, and fix I/O errors in Proxmox virtual machines. Common Causes of I/O Errors 1. Disk Image Corruption Improper shutdowns, disk overuse, or failing storage media can corrupt VM disk images. ...

Kubernetes provides several autoscaling mechanisms, and one of them is the Vertical Pod Autoscaler (VPA). Unlike the Horizontal Pod Autoscaler (HPA) which scales the number of pods, VPA adjusts CPU and memory requests/limits for individual pods. This article breaks down when VPA makes sense, what advantages it brings, and the critical limitations you must understand before deploying it in production. 1. What Is Vertical Pod Autoscaler? VPA automatically adjusts resource requests and limits for containers based on historical usage. ...

Basic IPVS Commands for Linux Networking IPVS (IP Virtual Server) is a powerful load balancing solution integrated into the Linux kernel. It is often used in Kubernetes environments as an alternative to iptables for service routing when kube-proxy is in IPVS mode. This guide covers the most useful IPVS commands using ipvsadm. What is IPVS? IPVS operates at the transport layer and allows you to load balance TCP and UDP traffic using multiple algorithms like round-robin, least connections, and more. ...

What is VolumeSnapshot in Kubernetes and How to Use It VolumeSnapshot is a Kubernetes feature that enables users to create point-in-time snapshots of Persistent Volumes (PVs). This functionality is essential for backup, disaster recovery, and data cloning scenarios. Why Use VolumeSnapshots? VolumeSnapshots provide: Data Protection: Easily back up data stored in PVs. Disaster Recovery: Restore volumes to a known-good state. Cloning: Create new volumes from snapshots. How VolumeSnapshots Work Snapshots are supported for specific storage classes that integrate with a CSI (Container Storage Interface) driver. The basic resources involved include: ...