Getting started with Minikube - Kubernetes on your laptop

Posted on Feb 18, 2019   ∣  2 min read  ∣  Kubernetes

minikube

if your new to kubernetes its good to start with minikube on your local host before that you can read my recent blog so you will get to know some basics

hope you read above articles now its good to go for minikube so lets start…

Requirements

Minikube requires that VT-x/AMD-v virtualization is enabled in BIOS. To check that this is enabled on OSX / macOS run:

sysctl -a | grep machdep.cpu.features | grep VMX

If there’s output, you’re good!

Prerequisites

brew update && brew install kubectl && brew cask install docker minikube virtualbox

Verify

docker --version                # Docker version 17.09.0-ce, build afdb6d4
docker-compose --version        # docker-compose version 1.16.1, build 6d1ac21
docker-machine --version        # docker-machine version 0.12.2, build 9371605
minikube version                # minikube version: v0.22.3
kubectl version --client        # Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.1", GitCommit:"f38e43b221d08850172a9a4ea785a86a3ffa3b3a", GitTreeState:"clean", BuildDate:"2017-10-12T00:45:05Z", GoVersion:"go1.9.1", Compiler:"gc", Platform:"darwin/amd64"}

Download Kubectl

Linux: https://storage.googleapis.com/kubernetes-release/release/v1.6.1/bin/linux/amd64/kubectl

MacOS: https://storage.googleapis.com/kubernetes-release/release/v1.6.1/bin/darwin/amd64/kubectl

Windows: https://github.com/eirslett/kubectl-windows/releases/download/v1.6.3/kubectl.exe

Minikube

Minikube on windows:

Test your cluster commands

Make sure your cluster is running, you can check with minikube status.

If your cluster is not running, enter minikube start first.


Biradars-MacBook-Air:~ sangam$ minikube start
Starting local Kubernetes v1.10.0 cluster...
Starting VM...
Getting VM IP address...
Moving files into cluster...
Setting up certs...
Connecting to cluster...
Setting up kubeconfig...
Starting cluster components...
Kubectl is now configured to use the cluster.
Loading cached images from config file.

Great! You now have a running Kubernetes cluster locally. Minikube started a virtual machine for you, and a Kubernetes cluster is now running in that VM

Check K8 minikube:

Biradars-MacBook-Air:~ sangam$ kubectl get nodes

Should output something like:

NAME       STATUS   ROLES    AGE   VERSION
minikube   Ready    master   10d   v1.10.0

run first K8-hello-minikube

Biradars-MacBook-Air:~ sangam$ kubectl run hello-minikube --image=gcr.io/google_containers/echoserver:1.4 --port=8080
kubectl run --generator=deployment/apps.v1 is DEPRECATED and will be removed in a future version. Use kubectl run --generator=run-pod/v1 or kubectl create instead.
deployment.apps/hello-minikube created

in this above kubectl is runing hello-minikube and using –image is flag which downloading simple image from google and –port is exposing on 8080 port

Biradars-MacBook-Air:~ sangam$ kubectl expose deployment hello-minikube --type=NodePort
service/hello-minikube exposed

NodePort: Exposes the service on each Node’s IP at a static port (the NodePort). A ClusterIP service, to which the NodePort service will route, is automatically created. You’ll be able to contact the NodePort service, from outside the cluster, by requesting :

Biradars-MacBook-Air:~ sangam$ minikube service hello-minikube --url
http://192.168.99.100:30451

<open a browser and go to that url>
 http://192.168.99.100:30451

output


CLIENT VALUES:
client_address=172.17.0.1
command=GET
real path=/
query=nil
request_version=1.1
request_uri=http://192.168.99.100:8080/

SERVER VALUES:
server_version=nginx: 1.10.0 - lua: 10001

HEADERS RECEIVED:
accept=text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
accept-encoding=gzip, deflate
accept-language=en-us
connection=keep-alive
dnt=1
host=192.168.99.100:30451
upgrade-insecure-requests=1
user-agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.2 Safari/605.1.15
BODY:
-no body in request-

You can check in dashboard too..


Biradars-MacBook-Air:~ sangam$ minikube dashboard

Opening http://127.0.0.1:49837/api/v1/namespaces/kube-system/services/http:kubernetes-dashboard:/proxy/ in your default browser...

You should now see your pod and your service

Biradars-MacBook-Air:~ sangam$ kubectl get all
NAME                              READY   STATUS    RESTARTS   AGE
pod/hello-node-7f5b6bd6b8-f8lj7   1/1     Running   0          9d

NAME                 TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
service/kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   10d

NAME                         DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/hello-node   1         1         1            1           9d

NAME                                    DESIRED   CURRENT   READY   AGE
replicaset.apps/hello-node-7f5b6bd6b8   1         1         1       9d