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A Cloud Guru

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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Path Info

Level

Beginner

Duration

1h 0m

Published

Jan 24, 2019

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.

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.