Deploying using Docker Desktop by enabling Kubernetes

Prerequisites

Install helm and enable the Kubernetes engine in the Docker Desktop.

Note : This example is only for the demonstration purpose.

Follow below steps to deploy the ZIETrans application in Kubernetes:

Docker Image Creation

a. Create a ZIETrans project and export it as an ear.

b. Refer to this docker file which deploys a sample ZIETrans application in Liberty server.

c. Build the Image using the docker build command.

docker build -t zietransimage .

Helm Chart Deployment

a. Create the helm chart by using below helm create command and modify acccording to your requirement or download the sample chart from here

helm create zietrans

b. Navigate to the downloaded helm chart using file explorer and modify the chart according to your requirement. In values.yaml, add the Docker image.

Configuration:

Table 1.
Parameter	Description	Default
image.repository	ZIETrans docker image name	zietransimage
image.imageTag	Docker image tag	latest
image.pullpolicy	Kubernetes imagePullPolicy value	IfNotPresent
serviceType	Type of the service	LoadBalancer
servicePort	Port number to be exposed	9080
replicas	Kubernetes replica count	1
Resources Limits: CPU: Memory:	Configure the CPU,Memory resources as per the requirement.	Limits: limits CPU:1 Memory:512Mi
StorageClassName	Name of the storage class	hostpath

c. Install the helm chart using helm install command.

helm install zietrans .

d. The ZIETrans application is deployed and access it using the url:

http://localhost:9080/<zietransapp>

Note: Below are the few use full commands tointeract with the ZIETrans Deployment:

Table 2.
Action	Command
To list the releases that are deployed or failed	helm ls
To get all the information about deployment	kubectl get all
To get the pod details	kubectl get pod
To get the Services details	kubectl get svc
To get the Persistent Volume details	Kubectl get pvc, Kubectl get pv

For more information on Kubernertes commands, refer to Kubernetes Cheat Sheet and for Helm commands, refer to Helm Commands.