scale-out-of-cluster

out-of-cluster-scaler

A simple pod scaler golang application that can scale pod replicas outside the cluster via manipulating the deployment

Setup & Installtion

git clone <repo-url>

Running The App

Note: You can use the -kubeconfig option to use a different config file. By default this program picks up the default file used by kubectl (when KUBECONFIG environment variable is not set).

To run the app with different config file, type this command:

go run main.go -kubeconfig="{absolute-path-of-kubeconfig-file}" 

To run the app with default config file, type this command:

go run main.go

⚠️ There should exist a dummy pod that crated with deployment manifest inside the cluster. I used this repository to create a pod that used a deployment named nodeapp-deployment

Open a browser and then go to localhost:3000 to make sure that application is running

Use localhost:3000/scale/{replica-count} to scale the specific replicas

Getting basic info about kubernetes components:

kubectl get node
kubectl get pod
kubectl get service
kubectl get all