Deploying a Microservice Application to Kubernetes

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Deploying a Microservice Application to Kubernetes

Microservice applications can be quite complex but that complexity can offer many benefits. Kubernetes can help you take advantage of those benefits by making these complex infrastructures easier to manage through automation. In this hands-on lab, you will see the value of Kubernetes firsthand as you deploy a complex microservice architecture to the cluster and then independently scale some of its components.

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Lab Info

Level

Beginner

Last updated

Sep 20, 2025

Duration

1h 0m

Challenge

Deploy the Stan's Robot Shop app to the cluster.
1. Clone the Git repo that contains the pre-made descriptors:
```
cd ~/
git clone https://github.com/linuxacademy/robot-shop.git
```
1. Since this application has many components, it is a good idea to create a separate namespace for the app:
```
kubectl create namespace robot-shop
```
1. Deploy the app to the cluster:
```
kubectl -n robot-shop create -f ~/robot-shop/K8s/descriptors/
```
1. Check the status of the application's pods:
```
kubectl get pods -n robot-shop
```
1. You should be able to reach the robot shop app from your browser using the Kube master node's public IP: http://$kube_master_public_ip:30080
Challenge

Scale up the MongoDB deployment to two replicas instead of just one.
1. Edit the deployment descriptor:
```
kubectl edit deployment mongodb -n robot-shop
```
1. You should see some YAML describing the deployment object.
- Under spec:, look for the line that says replicas: 1 and change it to replicas: 2.
- Save and exit.
1. Check the status of the deployment with:
```
kubectl get deployment mongodb -n robot-shop
```
After a few moments, the number of available replicas should be 2.

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