Steps to run an application on Windows using Docker and Minikube: 

Overview: 

There are only two steps: 

1. Prepare an external insecure docker registry  

2. Start the minikube with this external insecure docker registry 

The insecure term is used only for http versus https. It was required because docker and minikube on windows work together by taking an –insecure-registry as a start-up parameter. This is not the case on Linux where we can do without this parameter and have the minikube host its own docker registry. On windows, we install Docker toolbox and Minikube separately. This gives us two virtual machines by name ‘default’ for docker and ‘minikube’ for the Kubernetes cluster. Both are linux environments and we can one to install DESDP in another. 

Please allow your insecure registry sufficient disk space. The default size is about 18GB and this is not sufficient. You need at least 30 GB for a plethora of images. Docker toolbox is preferred over other software packages for installing Docker on Windows. 

Please allow your minikube to start with at least 2 cpu and 8GB memory. You need this much for the flink and pravega clusters in the deployment. 

Steps explained: 

1. Preparing and using an external insecure docker registry: 

1. You can use any host for your insecure registry including ubuntu vms. I used vm1.xyz.com. Run the following commands: 

1. Pull the image 

docker pull registry 

2. # start a container with the pulled image 

docker run --name regdock -p 5000:5000 -d registry 

3. # see regdock container created 

docker ps 

4. # go to docker configuration 

cd /etc/docker 

5. # specify the daemon.json config 

echo ‘{"insecure-registries":["vm1.xyz.com:5000"]}’ > /etc/daemon.json 

6. # test with pushing an image: 

docker push vm1.xyz.com:5000/hello-world:latest 

2. If you want a secure registry and use the docker within the minikube, you could: 

1. minikube kubectl create secret tls registry-docker-registry-tls --cert=..\minikube.crt --key=..\minikube.key 

secret/registry-docker-registry-tls created 

2. helm install stable/docker-registry --name registry --set tlsSecretName=registry-docker-registry-tls --set persistence.enabled=true --set service.type=NodePort --set service.nodePort=31001  

NAME:   registry 

LAST DEPLOYED: Fri Apr  3 17:15:29 2020 

NAMESPACE: default 

STATUS: DEPLOYED 

RESOURCES: 

==> v1/ConfigMap 

NAME                             DATA  AGE 

registry-docker-registry-config  1     0s 

==> v1/Deployment 

NAME                      READY  UP-TO-DATE  AVAILABLE  AGE 

registry-docker-registry  0/1    1           0          0s 

==> v1/PersistentVolumeClaim 

NAME                      STATUS  VOLUME                                    CAPACITY  ACCESS MODES  STORAGECLASS  AGE 

registry-docker-registry  Bound   pvc-cad1d7c1-e6d3-4258-95bd-4031da239377  10Gi      RWO           standard      0s 

==> v1/Pod(related) 

NAME                                       READY  STATUS             RESTARTS  AGE 

registry-docker-registry-7f798b64bd-s5j89  0/1    ContainerCreating  0         0s 

==> v1/Secret 

NAME                             TYPE    DATA  AGE 

registry-docker-registry-secret  Opaque  1     0s 

==> v1/Service 

NAME                      TYPE      CLUSTER-IP      EXTERNAL-IP  PORT(S)         AGE 

registry-docker-registry  NodePort  10.106.117.104  <none>       5000:31001/TCP  0s 

3. # get the port for this registry service: 

kubectl get --namespace default -o jsonpath="{.spec.ports[0].nodePort}" services registry-docker-registry 

4. # get the ip address for this registry service 

kubectl get nodes --namespace default -o jsonpath="{.items[0].status.addresses[0].address}" 

5. # Always remember to import your certificate to your local machine and reboot the windows host 

3. #Test the insecure registry 

curl -i http://vm1.xyz.com:5000 

HTTP/1.1 200 OK 

Cache-Control: no-cache 

Date: Sat, 04 Apr 2020 00:28:54 GMT 

Content-Length: 0 

4. # 

2. Start the minikube with 

minikube start --vm-driver=virtualbox --dns-domain xyz.com --insecure-registry vm1.xyz.com --host-dns-resolver=true --disk-size=50000mb --cpus=2 --memory=8000mb --dns-domain='xyz.com' --kubernetes-version=v1.15.6 --alsologtostderr -v=8 --wait=true 

If we need to use the windows host to connect to docker, we will have to specify the environment variables as follows: 

SET DOCKER_TLS_VERIFY=<empty|1> 

SET DOCKER_CERT_PATH=~/.docker 

SET DOCKER_HOST=tcp://<ip>:<port> 

SET DOCKER_MACHINE=<default|minikube>