KubernetesWorkshop

Kubernetes Workshop that will deploy a python web app with Flask and Redis in minikube

Setup Process

Install Minikube

curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.24.1/minikube-darwin-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/

Install kubectl

curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/darwin/amd64/kubectl && chmod +x ./kubectl && sudo mv ./kubectl /usr/local/bin/kubectlkubectl 

Start Minikube

minikube start --vm-driver=virtualbox

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Useful Commands

Check Pods

kubectl get pods

Check for Services

kubectl get svc

Check for replication controllers

kubectl get rc

Cleanup Pods

kubectl delete pod redis
kubectl delete svc redis
kubectl delete svc flask-redis-app
kubectl delete pod flask-redis-app

Create Pods

kubectl create -f db-pod.yml
kubectl create -f db-svc.yml
kubectl create -f app-pod.yml
kubectl create -f app-svc.yml

Get into Pod

kubectl exec -it flask-redis-app bash
kubectl exec -it redis bash

Create replication controller

kubectl create -f app-rc.yml

view the controller

kubectl get rc

Scaling the pods manually

kubectl scale rc flask-redis-app --replicas=10

Get Details on a service

kubectl describe svc <pod_name>

Get Minikube ip

minikube ip

Get Exposed Port

kubectl get svc flask-redis-app 

Look at the port mapping from 5000:<exposed_NodePort>

Changing the service live

kubectl edit svc flask-redis-app

Make Request to Counter

curl <minikube_ip>:<exposed_NodePort>

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For my notes on kubernetes

https://docs.google.com/document/d/1kpnZqGaHbxbWsH9Tfq60piP8a-LdejdlqAwWbKnHPo8/edit?usp=sharing

Credit

This project was inspired by Janakiram's Kubernetes webinar series