Add project files for Lesson 4

Author: leejustin

Diff for: lesson-4-intro-to-orchestration-with-kubernetes/demos/sample_yaml_files/deployment.yaml

@@ -0,0 +1,22 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: my-app
+  labels:
+    app: my-app
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: my-app
+  template:
+    metadata:
+      labels:
+        app: my-app
+    spec:
+      containers:
+      - name: simple-node
+        image: YOUR_DOCKER_HUB/simple-node
+        ports:
+        - containerPort: 80
+

Diff for: lesson-4-intro-to-orchestration-with-kubernetes/demos/sample_yaml_files/deployment_with_liveness.yaml

@@ -0,0 +1,27 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: my-app
+  labels:
+    app: my-app
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: my-app
+  template:
+    metadata:
+      labels:
+        app: my-app
+    spec:
+      containers:
+      - name: simple-node
+        image: YOUR_DOCKER_HUB/simple-node
+        ports:
+        - containerPort: 80
+      livenessProbe:
+        httpGet:
+          path: /health
+          port: 8080
+        initialDelaySeconds: 3
+        periodSeconds: 3

Diff for: lesson-4-intro-to-orchestration-with-kubernetes/demos/sample_yaml_files/service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: my-app
+  labels:
+    run: my-app
+spec:
+  ports:
+  - port: 80
+    protocol: TCP
+  selector:
+    run: my-app
+

Diff for: lesson-4-intro-to-orchestration-with-kubernetes/exercises/kubernetes-on-aws/Dockerfile

@@ -0,0 +1,21 @@
+# Use NodeJS base image
+FROM node:13
+
+# Create app directory
+WORKDIR /usr/src/app
+
+# Install app dependencies by copying
+# package.json and package-lock.json
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy app source
+COPY . .
+
+# Bind the port that the image will run on
+EXPOSE 8080
+
+# Define the Docker image's behavior at runtime
+CMD ["node", "server.js"]

Diff for: lesson-4-intro-to-orchestration-with-kubernetes/exercises/kubernetes-on-aws/README.md

@@ -0,0 +1,13 @@
+# Overview
+This is a very simple, bare-bones NodeJS project created for you to use with Docker.
+
+# Local Setup
+* Install dependencies: `npm install`
+* Run server: `node server.js`
+
+# Container Setup
+* Build image: `docker build .`
+* Run container with image: `docker run {image_id}` where `image_id` can be retrieved by running `docker images` and found under the column `IMAGE ID`
+
+# Container teardown
+* Remove container: `docker kill {container_id}` where `container_id` can be retrieved by running `docker ps` and found under the column `CONTAINER ID`

Diff for: lesson-4-intro-to-orchestration-with-kubernetes/exercises/kubernetes-on-aws/package-lock.json

@@ -0,0 +1,13 @@
+{
+  "name": "simple_node",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {}
+}

Diff for: lesson-4-intro-to-orchestration-with-kubernetes/exercises/kubernetes-on-aws/package.json

@@ -0,0 +1,12 @@
+function sleep(ms) {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function main() {
+  while(true) {
+    console.log('Containers rule!');
+    await sleep(5000);
+  }
+}
+
+main();