Kubernetes Playground

A workshop that works as a starting point to mess around with kubernetes.

By the end you should know how to run kubernetes in your PC and how to run different services in your kubernetes.

Requirements

OSX

• Homebrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

• VirtualBox 5.2

Download from here: https://www.virtualbox.org/wiki/Download_Old_Builds_5_2

• Minikube

$ brew cask install minikube

$ minikube config set cpus 4
$ minikube config set memory 4096

$ minikube start

• Helm

$ brew install kubernetes-helm

## install helm on the kuberntes cluster
$ helm init

• kubectl

brew reinstall kubernetes-cli

Ubuntu

• VirtualBox 5.2.18 !The version is important

Download from here: https://www.virtualbox.org/wiki/Download_Old_Builds_5_2

• Minikube

$ snap install minikube --classic

$ minikube config set cpus 4
$ minikube config set memory 4096

• Helm

$ snap install helm --classic

## install helm on the kuberntes cluster
$ helm init

• kubectl

snap install kubectl --classic

Part 1 - Install Helm

$ helm init


### Check if its running

$ kubectl get pods --all-namespaces

Part 2 - Install a Grafana

$ helm install --name grafana-release stable/grafana

...

NOTES:
1. Get your 'admin' user password by running:

   kubectl get secret --namespace default grafana-release -o jsonpath="{.data.admin-password}" | base64 --decode ; echo

2. The Grafana server can be accessed via port 80 on the following DNS name from within your cluster:

   grafana-release.default.svc.cluster.local

   Get the Grafana URL to visit by running these commands in the same shell:

     export POD_NAME=$(kubectl get pods --namespace default -l "app=grafana,release=grafana-release" -o jsonpath="{.items[0].metadata.name}")
     kubectl --namespace default port-forward $POD_NAME 3000

3. Login with the password from step 1 and the username: admin
#################################################################################
######   WARNING: Persistence is disabled!!! You will lose your data when   #####
######            the Grafana pod is terminated.                            #####
#################################################################################

Check the status:

$ helm status grafana-release

Get the password

$ kubectl get secret --namespace default grafana-release -o jsonpath="{.data.admin-password}" | base64 --decode ; echo

Forward the port

$ export POD_NAME=$(kubectl get pods --namespace default -l "app=grafana,release=grafana-release" -o jsonpath="{.items[0].metadata.name}")

$ kubectl --namespace default port-forward $POD_NAME 3000

Open http://localhost:3000/ and login with admin:{password}

Create a deployment and a service

Run h314to/hellogo:latest on kubernetes.

Try to do it yourself. If you can't solutions are provided in hello.yaml and the Makefile