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K8S

A collection of 8 posts

Kubernetes Services and Iptables

Kubernetes Featured

Kubernetes Services and Iptables

0 Prerequisites and Prework This post only focuses on how kubernetes leverages iptables to implement its service mode. Per official doc Services [https://kubernetes.io/docs/concepts/services-networking/service/] > A Kubernetes Service is an abstraction which defines a logical set of Pods and a policy by which to access them

Pod Security Policy Explained By Examples

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Pod Security Policy Explained By Examples

Pod security policy enables fine-grained authorization of pod creation and updates but it also has some mysterious things behind, this article gives more insight about how it works.

Kubernetes Verbose Logging

Kubernetes Verbose Logging

Kubectl Verbose Logging kubectl -v=10 get pod Kubernetes Core Components Logging From /etc/kubernetes/manifests, edit *.yaml files, add -v=10 switch

Running a K8S Cluster in Multiple Zones on Azure with Calico and IPVS

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Running a K8S Cluster in Multiple Zones on Azure with Calico and IPVS

This post will explain how to deploy a kubernetes cluster in multiple zones on Azure with detailed steps, together with enabling IPVS for high performance and Calico network policy for secure network connectivity. We will explore some concepts in multiple zones cluter and show how they work as well.

Yet another way to troubleshoot K8S applications

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Yet another way to troubleshoot K8S applications

There are plenty of articles explains how to debug K8S applications, for example * Troubleshoot Applications [https://kubernetes.io/docs/tasks/debug-application-cluster/debug-application/] * Connect with SSH to Azure Kubernetes Service (AKS) cluster nodes for maintenance or troubleshooting [https://docs.microsoft.com/en-us/azure/aks/ssh] Due to the nature of container's

How do I host this website in Azure K8S cluster

How do I host this website in Azure K8S cluster

Explain how I built up my website from Azure hosted K8S cluster

Flannel Networking Demystify

Flannel Featured

Flannel Networking Demystify

In my previous article Deploy a Ubuntu Based Flannel K8S Cluster in Azure with ARM Template and Kubeadm [https://msazure.club/deploy-a-ubuntu-based-flannel-k8s-cluster-in-azure-with-arm-template-and-kubeadm/] , I provided an Azure ARM template to deploy a flannel networking K8S cluster on Azure. But how flannel networking works, in this article we will discuss a little

Deploy a Ubuntu Based Flannel K8S Cluster in Azure with ARM Template and Kubeadm

Deploy a Ubuntu Based Flannel K8S Cluster in Azure with ARM Template and Kubeadm

The infomation migth be outdated here as acs-engine adds support for Flannel recently with PR 2967 [https://github.com/Azure/acs-engine/pull/2967] However, if you want to gain more control on your kubernetes cluster in Azure, in our case, by using kubeadm, this article still applies. 0. Prerequisites * Azure