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To build the backend (Docker image):

1. Right-click the BackendServiceCompositeApplication (application project of the Backend service) in the project explorer, and click Generate Docker Image.

2. In the dialog that opens, enter the following details, and click Next.

   Name of the application	The name of the composite application with the artifacts created for your EI project. The name of the EI project is displayed by default, but it can be changed if required.
   Application version	Enter 1.0.0 as the version of the composite application.
   Name of Docker Image	Enter backend_docker_image_k8 as the name of the Docker image.
   Docker Image Tag	Enter latest as the tag for the Docker image to be used for reference.
   Export Destination	The .tar file of the Docker image will be saved to this location.

3. Select the integration artifacts in the BackendService project folder, and click Finish.

To build the integration service (Docker image):

<endpoint>
    <address uri="http://order-process-be-service:8290/order"/>
</endpoint>

1. Right-click the IntegrationServiceCompositeApplication (application project of the integration service) in the project explorer, and click Generate Docker Image.

2. In the dialog that opens, enter the following details, and click Next.

   Name of the application	The name of the composite application with the artifacts created for your EI project. The name of the EI project is displayed by default, but it can be changed if required.
   Application version	Enter 1.0.0 as the version of the composite application.
   Name of Docker Image	Enter integration_docker_image_k8 as the name of the Docker image.
   Docker Image Tag	Enter latest as the tag for the Docker image to be used for reference.
   Export Destination	The .tar file of the Docker image will be saved to this location.

3. Select the integration artifacts in the IntegrationService project folder, and click Finish.

To set up a Minikube cluster:

1. Start Minikube on your terminal:

   Code Block
   minikube start

2. Execute the command given below to start using Minikube's built-in Docker daemon. You need this Docker daemon to be able to create Docker images for the Minikube environment.

   Code Block
   eval $(minikube docker-env)

To load the two Docker images to the Minikube environment execute the commands given below. Be sure to replace the file path with the directory paths to the .tar files of your Docker images.

1. To load the backend service, execute the following command:

   Code Block
   docker load --input <file_path-tar_file_of_backend_service>

   Verify (by running the 'docker image ls' command) that the docker image has been loaded to Minikube without a tag.
   Image Modified

   Use the image ID and tag your image in Minikube:

   Code Block
   docker tag 3fd3399caa63 backend_docker_image_k8

2. To load the integration service execute the following command:

   Code Block
   docker load --input <file_path-tar_file_of_integration_service>

   Verify (by running the 'docker image ls' command) that the docker image has been loaded to Minikube without a tag.

   Image Modified
   

   Use the image ID and tag your image in Minikube:
   

   Code Block
   docker tag 10d6e28754fd integration_docker_image_k8

To compose and run the Docker images on Minikube:

1. Download the k8-deployment.yaml file and save it to a know location.

2. Navigate to the location of the k8-deployment.yaml file, and execute the following command:

   Code Block
   kubectl create -f k8s-deployment.yaml

   
   

3. Check whether all the Kubernetes artifacts are deployed successfully by executing the following command:

   
   

   Code Block
   kubectl get all

   You will get a result similar to the following. Be sure that the deployment is in 'Running' state.

   Code Block

   NAME READY STATUS RESTARTS AGE pod/mi-helloworld-deployment-56f58c9676-djbwh 1/1 Running 0 14m pod/mi-helloworld-deployment-56f58c9676-xj4fq 1/1 Running 0 14m NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 25m service/mi-helloworld-service NodePort 10.110.50.146 <none> 8290:32100/TCP 14m NAME READY UP-TO-DATE AVAILABLE AGE deployment.apps/mi-helloworld-deployment 2/2 2 2 14m NAME DESIRED CURRENT READY AGE replicaset.apps/mi-helloworld-deployment-56f58c9676 2 2 2 14m

The two Docker containers are now running. You can now test the integration flow.

Build and Run the backend service

1. Install the binary of WSO2 Micro Integrator. The installation location of this server instance will be referred to as <MI1_HOME>.
2. Setup the backend server
   1. Create a CAR file from the artifacts in your BackendService project: Right-click the BackendServiceCompositeApplication and click Export Composite Application Project. Follow the steps on the wizard to save the CAR file.
   2. Copy the CAR file to the <MI1_HOME>/repository/deployment/server/carbonapps/ directory.

   3. Start the Micro Integrator instance (MI1) with a port offset of 11. This changes the effective port of the Micro Integrator to 8291.

      Panel
      borderColor #542989 bgColor #ffffff borderWidth 1
      Localtabgroup Localtab title On MacOS/Linux/CentOS Open a terminal and execute the following command: Code Block sudo wso2mi-1.0.0 -DportOffset=11 Localtab title On Windows First, open the carbon.xml file (stored in the <MI1_HOME>/conf/ directory) and set the port offset to 11: Code Block <Offset>11</Offset> Next, go to Start Menu -> Programs -> WSO2 -> Micro Integrator. This will open a terminal and start the relevant profile.

Build and run the integration service

<endpoint>
    <address uri="http://localhost:8291/order"/>
</endpoint>

Let's run the integration service in the Micro Integrator that is embedded in WSO2 Integration Studio: Right-click the IntegrationServiceCompositeApplication, and click Export Project Artifacts and Run.

The two services are now running on two instances of WSO2 Micro Integrator.