In this hands-on lab, you are provided two servers with Kubernetes and containerd installed and configured. You will need to add a Node to the cluster using the information provided and then you will need to create a deployment file. This file will start three replicas of an Nginx image. You will use the relevant commands to scale up the number of replicas to five and then back down to one.
Successfully complete this lab by achieving the following learning objectives:
- Log In to the Provided Server
Log in to the server as
cloud_userwith the provided password to ensure you can log in. When the file
SERVER-READYis visible in the
/home/cloud_userfolder, then you can follow along with the objectives.
- Add Your Worker Node to the Cluster
Add your worker Node
knode1to the cluster using the information provided in the cluster-info text file, and check if it is ready for use.
- Create a Deployment File That Runs the Nginx Image
You will create a deployment file that runs the Nginx image; use port
8080for its output.
Call the file
deployment-nginx.yml, and start the three replicas.
- Use the kubectl Command and Run the Deployment
kubectlto create the deployment, and check if the three replicas have started.
- Scale the Number of Replicas
Scale the number of replicas using the relevant commands: firstly to five replicas then down to one replica.