FailedCreatePodSandBox Error Error response from daemon: OCI runtime create failed: container_linux.go:380: starting container process caused: process_linux.go:402: getting the final child's pid from pipe caused: EOF: unknown Resolution Clear the cache 1 echo 3 > /proc/sys/vm/drop_caches Cause Too much memory fragmentation calico-node Keeps Restarting increase max user Error runtime: failed to

A record of repairing a cluster failure caused by an IP change. There are two clusters: one single-node (allinone) cluster, and one four-node cluster (3 masters, 1 node). 1. Update the Etcd Certificates [On every Etcd node] Back up the Etcd certificates 1 cp -R /etc/ssl/etcd/ssl /etc/ssl/etcd/ssl-bak View the domains

This article is translated from https://learnk8s.io/kubernetes-network-packets, not word for word, with some of my own understanding worked in. By reading this article, you can learn how packets are forwarded inside and outside Kubernetes, starting from the original web request all the way to the container hosting the application. Kubernetes Network Requirements Before diving into the details of how packets flow through a Kubernetes cluster, let’s first clarify Kubernetes’ requirements for networking.

1. A Process Divorced from Responsibility Is Meaningless Software architecture matches organizational architecture, and this shows up not only in functional boundaries but even more in the division of responsibilities. Only clear responsibility boundaries can build good team collaboration and growth. Every team and every person should understand their own goals — what they should take on and what they should stay out of — and invest their time and energy in things that benefit the primary goal, rather than sinking into trivia.

1. Picking Up from Last Time: Shared Storage Optimizes Pulling Images Overseas Building on An Image Management and Distribution Case Based on Harbor and Registry, I recently made another optimization. The previous approach was to deploy a Mirror Cache in each region on a machine with low specs and a large disk to cache images.