Helm chart to build a simple metrics exporter for external URLs status and latency

Prerequisites

1. Docker hub account.
2. Kubernetes cluster, you can create test cluster with minikube.

Installation Steps

1. Create docker image, and tag it with your username prefix.

   docker build -t infra-task .
   docker tag infra-task:latest <your-username>/infra-task

2. Login to your docker hub account using command. ```docker login````
3. Verify docker login config

   cat ~/.docker/config.json

4. Create kubernetes Secret based on existing Docker credentials.

   kubectl create secret generic regcred \
       --from-file=.dockerconfigjson=<path/to/.docker/config.json> \
       --type=kubernetes.io/dockerconfigjson

5. Verify secret existence.

   kubectl get secret regcred --output=yaml

6. Push docker image to docker hub

   docker push <your-username>/infra-task:latest

7. Add your docker repo url and secret to Chart values

   image:
   repository: <your-username>/infra-task
   pullPolicy: IfNotPresent
   tag: "latest"
   
   imagePullSecrets:
   - name: regcred

8. Install the helm chart to the kubernetes cluster

   helm install infra-task ./infra-task --set service-type=NodePort

9. Follow helm install output instructions to get access to the service or setup appropriate ingress.