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Showing posts with label kubectl. Show all posts
Showing posts with label kubectl. Show all posts
Saturday, June 22, 2024

vSphere with Tanzu using NSX-T - Part31 - Troubleshooting inaccessible TKC with expired control plane certs

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In the course of managing multiple Tanzu Kubernetes Clusters (TKC), I encountered an unexpected issue: the control plane certificates had ex...
Monday, January 15, 2024

Ollama - Part1 - Deploy Ollama on Kubernetes

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Docker published GenAI stack around Oct 2023 which consists of large language models (LLMs) from Ollama, vector and graph databases from Ne...
Saturday, December 30, 2023

GitOps using Argo CD - Part2 - Mini project

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In the previous blog post, we discussed deploying Argo CD on a Kubernetes cluster and explored the fundamentals of application management....
Sunday, December 3, 2023

Kubernetes mini project

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In this mini project, we are going to learn the following: Deploy a simple Python based web application on a Kubernetes cluster. We will use...
Saturday, November 18, 2023

vSphere with Tanzu using NSX-T - Part29 - Logging using Loki stack

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Grafana Loki is a log aggregation system that we can use for Kubernetes. In this post we will deploy Loki stack on a Tanzu Kubernetes clus...
Sunday, October 29, 2023

Kubernetes 101 - Part12 - Debug pod

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When it comes to troubleshooting application connectivity and name resolution issues in Kubernetes, having the right tools at your disposal ...
Sunday, July 23, 2023

Kubernetes 101 - Part11 - Find Kubernetes nodes with DiskPressure

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Following are two quick and easy ways to find Kubernetes nodes with disk pressure: jq: kubectl get nodes -o json | jq -r '.items[] | sel...
Sunday, July 9, 2023

vSphere with Tanzu using NSX-T - Part27 - nullfinalizer kubectl plugin

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I have seen many cases where the supervisor namespace gets stuck at Terminating phase waiting on finalization on some of its child resources...
Saturday, July 8, 2023

Kubernetes 101 Blog series

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Part1 - Create K8s cluster with kubeadm Part2 - Basic operations Part3 - Install kubectl on Windows Part4 - Kubectl autocomplete and alias P...
Saturday, June 17, 2023

Kubernetes 101 - Part10 - Plugins I use for managing K8s clusters

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Following are some of the kubectl plugins that I use on a daily basis:   kubectx kail kubectl tree kubectl images kubectl allctx kubectl vie...
Friday, June 9, 2023

vSphere with Tanzu using NSX-T - Part26 - Jumpbox kubectl plugin to SSH to TKC node

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For troubleshooting TKC (Tanzu Kubernetes Cluster) you may need to ssh into the TKC nodes. For doing ssh, you will need to first create a ju...
Saturday, May 20, 2023

vSphere with Tanzu using NSX-T - Part25 - Spherelet

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The Spherelet is based on the Kubernetes “Kubelet” and enables an ESXi hypervisor to act as a Kubernetes worker node. Sometimes you may noti...
Sunday, May 7, 2023

Kubernetes 101 - Part9 - kubeconfig certificate expiration

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You can verify the expiration date of kubeconfig in the current context as follows: kubectl config view --minify --raw --output 'jsonpat...
Saturday, April 15, 2023

Kubernetes 101 - Part8 - Filter events of a specific object

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You can filter events of a specific object as follows: k get event --field-selector involvedObject.name=<object name> -n <namespace...
Saturday, April 8, 2023

vSphere with Tanzu using NSX-T - Part24 - Kubernetes component certs in TKC

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The Kubernetes component certificates inside a TKC (Tanzu Kubernetes Cluster) has lifetime of 1 year. If you manage to upgrade your TKC atle...