Kubernetes

K8S Basic Comands

Install minikube and hypervisor min MacOS

• brew update
• brew install hyperkit
• brew install minikube
• kubectl --version
• minikube --version
• minikube status

create minikube cluster

• minikube start --vm-driver=hyperkit
• kubectl get nodes
• minikube status
• kubectl version

delete cluster and restart in debug mode

• minikube delete
• minikube start --vm-driver=hyperkit --v=7 --alsologtostderr
• minikube status

kubectl commands

• kubectl get nodes
• kubectl get pod
• kubectl get services
• kubectl create deployment nginx-depl --image=nginx
• kubectl get deployment
• kubectl get replicaset
• kubectl edit deployment nginx-depl

debugging

• kubectl logs {pod-name}
• kubectl exec -it {pod-name} -- bin/bash

create mongo deployment

• kubectl create deployment mongo-depl --image=mongo
• kubectl logs mongo-depl-{pod-name}
• kubectl describe pod mongo-depl-{pod-name}

delete deplyoment

• kubectl delete deployment mongo-depl
• kubectl delete deployment nginx-depl

create or edit config file

• kubectl apply -f nginx-deployment.yaml
• kubectl get pod
• kubectl get deployment

delete with config

• kubectl delete -f nginx-deployment.yaml

Metrics

• kubectl top The kubectl top command returns current CPU and memory usage for a cluster’s pods or nodes, or for a particular pod or node if specified.