Blogs App with Kubernetes deployment support

The blog app can be hosted in K8s using kubectl The deployment files are found in the manifests folder. The files are described as below.

• persistentvolume.yaml is used to create the persistent volume
• postgres-deployment.yaml creates the service to expose the postgres port, the volume claim for persistence of the PostgreSQL db data and the actual deployment of the PostgreSQL database.
• blogs-deployment.yaml creates the deployment of the blog service. You can build the image from the root directory and modify this file to use custom image.

Horizontal Pod Auto Scaling

Appropriate resource limit are added in the blogs-deployment.yaml to allow for horizontal scaling. The command below is then used in the scaling.

kubectl autoscale deployment blogs-app --cpu-percent=50 --min=1 --max=10

GKE pipeline with Github Actions

This has been configured in the .github folder The cluster can be created using the command

gcloud container clusters create blogs-cluster --zone=europe-north1-b --cluster-version=1.22

After usage the cluster can be deleted with the command:

gcloud container clusters delete blogs-cluster --zone=europe-north1-b