Executing the Demo Locally with Docker-Desktop

Hello Folks,

I tested the below on MacOS, and I would like to leave this here so you can watch Nigel’s Demo and execute locally with the Docker-Desktop. You should have it installed on your Mac, and also, you should enable Kubernetes. I’d say an old version of the Docker-Desktop will give you suck a big headache to start Kubernetes, but, in my experience, once I updated the version, the stuff worked like magic.

More on Docker-Desktop here: https://www.docker.com/products/docker-desktop

Nigel’s Repo to be cloned: https://github.com/nigelpoulton/acg-k8s-dd

You have it, awesome, let’s execute the below. Follow the comments and have fun!

[bianchi@mariadbrdba(/opt/docker/acloudguru/acg-k8s-dd/code-k8s)] $ kubectl config get-contexts  
CURRENT   NAME                 CLUSTER          AUTHINFO         NAMESPACE  
          docker-desktop       docker-desktop   docker-desktop     
          docker-for-desktop   docker-desktop   docker-desktop     
          minikube             minikube         minikube     

#: change the context to the docker-for-desktop

[bianchi@mariadbrdba(/opt/docker/acloudguru/acg-k8s-dd/code-k8s)] $ kubectl config use-context docker-for-desktop  
Switched to context "docker-for-desktop".  

#: deploy an image to the cluster

[bianchi@mariadbrdba(/opt/docker/acloudguru/acg-k8s-dd/code-k8s)] $ kubectl run bianchi --image wagnerbianchi/bianchi-acloudguru:0.2 --generator=run-pod/v1  
deployment.apps/bianchi created  

#: it reads the current nodes

[bianchi@mariadbrdba(/opt/docker/acloudguru/acg-k8s-dd/code-k8s)] $ kubectl get nodes  
NAME             STATUS   ROLES    AGE   VERSION  
docker-desktop   Ready    master   10d   v1.16.6-beta.0  

#: apply the deployment
[bianchi@mariadbrdba(/opt/docker/acloudguru/acg-k8s-dd/code-k8s)] $ kubectl apply -f web-deploy.yml   
deployment.apps/simple-web created  
[bianchi@mariadbrdba(/opt/docker/acloudguru/acg-k8s-dd/code-k8s)] $ kubectl get deploy --watch  
NAME         READY   UP-TO-DATE   AVAILABLE   AGE  
bianchi      1/1     1            1           3m52s  
simple-web   3/3     3            3           44s  

#: apply the service
[bianchi@mariadbrdba(/opt/docker/acloudguru/acg-k8s-dd/code-k8s)] $ kubectl apply -f web-nodeport.yml   
service/web-nodeport created  
[bianchi@mariadbrdba(/opt/docker/acloudguru/acg-k8s-dd/code-k8s)] $ kubectl get svc --watch  
NAME           TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)          AGE  
kubernetes     ClusterIP   10.96.0.1              443/TCP          10d  
web-nodeport   NodePort    10.96.230.71           8080:31000/TCP   20s

Open your browser and navigate to http://localhost:31000

Cheers,

-Bianchi