Hello World Flask App with Minikube and Skaffold

This project provides a simple Flask "Hello World" application that can be deployed locally using Minikube and Skaffold.

The idea is to illustrate how Skaffold can keep local code in sync with a deployed container without needed to rebuild the container.

Prerequisites

Setup and Deployment

Start Minikube:
```
minikube start
```
Set Docker to use Minikube's Daemon:
```
eval $(minikube docker-env)
```
Run Skaffold:
```
skaffold dev
```
Access the Application:
```
minikube service hello-world
```

Troubleshooting

Browser Hanging

Check Skaffold's Output: Ensure there are no errors in Skaffold's terminal output.
Check Service and Pod Status: Ensure the service and pod are running using kubectl get svc hello-world and kubectl get pods -l app=hello-world.
Access Service Manually: Use minikube service hello-world to open the application in a new browser window/tab.
Check Application Logs: Use kubectl logs -l app=hello-world to view logs for any errors or issues.
Network Issues: Try accessing the application from a different browser or device on the same network.
Minikube Tunnel: If using a LoadBalancer service type, ensure you have minikube tunnel running in a separate terminal.
Resource Constraints: Ensure Minikube has enough resources allocated.
Recreate Minikube Cluster: If all else fails, consider restarting Minikube using minikube stop, minikube delete, and minikube start.
Skaffold Debugging: if you have issues running in skaffold, try running with the -vdebug flag skaffold dev -vedbug to see verbose output.

Skaffold Tagging Issues

Skaffold uses Git tags or commits to tag Docker images by default. If your project directory isn't a Git repository, Skaffold might fail to generate a tag using Git but will fall back to using the latest tag.

To address this:

Initialize a Git Repository:

git init
git add .
git commit -m "Initial commit"