Hello World App

This is an application that streams messages "Hello World" to your browser at random intervals. You will need docker, your user will need to be added to the docker group, and minikube needs to be installed. Reference the Setup Guide for details.

Running the app

To get the app running, navigate to the root directory and call

./deploy.sh --build-all-apps

This will:

Start the cluster
Build all docker images
Add images to the cluster
Apply the needed configs
Open the default browser to a page where you can view the "Hello World" messages

There are two docker apps that can be developed further. But if you don't make any changes, and after having built the images at least once, you can omit the optional argument --build-all-apps

All Docker app files live in docker_apps/. The deploy script will crawl this directory and build each app it finds. Each app follows this directory structure.

docker_apps
└── <app name>_app
    ├── build_and_cache.sh
    ├── Dockerfile
    └── requirements.txt

Current Cluster Design

Expected Behavior

Setup

Install Docker (27.3.1)

Steps taken from this guide: Docker Setup Guide

To install our version of Docker CLI, Docker Engine, and their dependencies, follow these steps:

Download the installation script:

curl -fsSL https://get.docker.com -o install-docker.sh

Run the script with --dry-run to verify the steps it executes:
```
sh install-docker.sh --dry-run
```
Run the script either as root or using sudo to perform the installation:
```
sudo sh install-docker.sh --version 27.3.1
```

Add user to Docker group and ensure it works

sudo usermod -aG docker $USER
newgrp docker
docker run hello-world

Install Minikube

Steps taken from this guide: Minikube Setup Guide

To install Minikube on your Ubuntu machine, execute the following commands:

Download Minikube binary:

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64

Install Minikube:

sudo install minikube-linux-amd64 /usr/local/bin/minikube

Clean up by removing the binary file:
```
rm minikube-linux-amd64
```
Start minicube to pull down needed docker images:
```
minikube start
```
Verify the Cluster works:
```
minikube status
```

Garrett-Wolfe/infrastructure_machina