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Kubernetes

Getting started with Kubernetes

Name Comments
kubernetes.io Official Kubernetes site by Google
Kubernetes 101 Great beginner article on Kubernetes fundamental concepts
Kubernetes Tutorial for Beginners Full video of 4 hours on Kubernetes (2020)
Learning Path: Kubernetes From basic to advanced Kubernetes learning series
Kubernetes 101 - Concepts and Why It Matters
kubernetes-workshop
Kubernetes Deployment Tutorial
Katacoda Learn Kubernetes using Interactive Browser-Based Scenarios

Kubernetes Deep Dive

Name Comments
Kubernetes Networking Kubernetes Networking Resources
Liveness and Readiness Probes

Kubernetes Deep Dive

Name Comments
Kubernetes Troubleshooting Visual Guide

Misc

Name Comments
Kubernetes CheatSheet
OperatiorHub.io Kubernetes native applications
YAML templates

Videos

Name Comments
The Illustrated Children's Guide to Kubernetes
Learn Kubernetes Over 50 Kubernetes videos
Kubernetes Ingress Explained Completely For Beginners 2019

Tools & Projects

Name Comments
KubeInvaders "Chaos Engineering Tool for Kubernetes and Openshift"
Kubesort "kubesort helps you sort the results from kubectl get in an easy way"
IngressMonitorController "A Kubernetes controller to watch ingresses and create liveness alerts for your apps/microservices"

Certificates

Name Comments
CKAD-Practice-Questions "a consolidated list for CKAD practice questions"
CKAD Prep Exam Video A video of doing a CKAD prep exam (2020)

CheatSheet

Minikube

  • Minikube version: minikube version
  • Start cluster: minikube start
  • Delete cluster: minikube delete

Service Accounts

  • List service accounts: kubectl get serviceaccounts

Cluster

  • Cluster version: kubectl version
  • Cluster information: kubectl cluster-info
  • List nodes: kubectl get nodes

Pods

  • List of Pods in current namespace: kubectl get po

  • List of Pods in all amespaces: kubectl get po --all-namespaces

  • Get containers names: kubectl get po <POD_NAME> -o jsonpath="{.spec.containers[*].name}"

  • Create a Pod from file: kubectl create -f pod_definition.yaml

  • Delete a Pod using a YAML definition: kubectl delete -f pod_definition.yaml

  • Delete a Pod using the Pod name: kubectl delete <POD_NAME>

  • Delete a Pod instantly: kubectl delete <POD_NAME> --grace-period=0 --force

  • Execute commands inside a container: kubectl exec -it -c <CONTAINER_NAME> <POD_NAME> ls

  • Display logs of a Pod: kubectl logs <POD_NAME>

  • Display logs of a specific container in a Pod: kubectl logs <POD_NAME> -c <CONTAINER_NAME>

User

  • Creating a new user
openssl genrsa -out user.key 2048 # create key
openssl req key user.key user.csr -subj "/CN=user /O=sgroup" # create csr
openssl x509 -req -in user.csr -CA ca.crt -CAkey ca.key -CAcreateseral -out user.crt -days 365
kubectl config set-credentials myuser --client-certificates=$PWD/user.crt --client-key=$PWD/user.key
kubectl config set-context myuser-context --cluster=k8s-cluster --user=user