Merge pull request #1 from nigelpoulton/nigel

Adding content

Author: julianpitt

README.md

@@ -1,2 +1,8 @@
 # Kubernetes_Deep_Dive_NP
 A Cloud Guru - Kubernetes Deep Dive
+
+The main sample app is available in the *sample-app* folder.
+
+All other supporting files will be under the lesson folder with the appropriate name.
+
+Enjoy!

code-k8s/Dockerfile

@@ -0,0 +1,20 @@
+FROM centos:centos7
+
+LABEL [email protected]
+
+# Install Node etc...
+RUN yum -y update; yum clean all
+RUN yum -y install epel-release; yum clean all
+RUN yum -y install nodejs npm; yum clean all
+
+# Copy source code to /src in container
+COPY . /src
+
+# Install app and dependencies into /src in container
+RUN cd /src; npm install
+
+# Document the port the app listens on
+EXPOSE 8080
+
+# Run this command (starts the app) when the container starts
+CMD cd /src && node ./app.js

code-k8s/app.js

@@ -0,0 +1,17 @@
+// Simple node.js web app for demonstrating containerizing apps
+// For quick demo purposes only (not properly maintained)
+'use strict';
+
+var express = require('express'),
+    app = express();
+
+app.set('views', 'views');
+app.set('view engine', 'pug');
+
+app.get('/', function(req, res) {
+    res.render('home.pug', {
+  });
+});
+
+app.listen(8080);
+module.exports.getApp = app;

code-k8s/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "container-web-test",
+  "private": true,
+  "version": "0.0.1",
+  "description": "Demo app for Web container demonstrations",
+  "main": "app.js",
+  "author": "Nigel Poulton <[email protected]>",
+  "license": "Will be full of vulnerabilities!",
+  "dependencies": {
+    "express": "4.16.3",
+    "pug": "2.0.3"
+  }
+}

code-k8s/readme.md

@@ -0,0 +1,11 @@
+# Test app for demonstrating containerizing web app
+
+Super-simple Node web app for containerization demos
+
+## Instructions for use
+
+1. Fork the repo 
+2. Clone repo locally
+3. Build Docker iamge `docker image build -t <tag> .` from within the root directory of the repo 
+4. Push image to container registry
+5. Run container/Pod using the created image

code-k8s/views/home.pug

@@ -0,0 +1,12 @@
+html
+  head
+    title='ACG loves K8S'
+    link(rel='stylesheet', href='http://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css')
+  body
+    div.container
+      div.jumbotron
+        h1 A Cloud Guru loves Kubernetes!!!
+        p
+        p 
+          a.btn.btn-primary(href="https://www.amazon.com/Kubernetes-Book-Nigel-Poulton/dp/1521823634/ref=sr_1_3?ie=UTF8&qid=1531240306&sr=8-3&keywords=nigel+poulton") The Kubernetes Book
+        p

lesson-auto-scaling/autoscale.yml

@@ -0,0 +1,29 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    run: test
+  name: test
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      run: test
+  strategy:
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 0
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        run: test
+    spec:
+      containers:
+      - image: nginx:1.12
+        name: nginx
+        resources:
+          limits:
+            cpu: 1
+          requests:
+            cpu: 0.5

lesson-auto-scaling/hpademo.yml

@@ -0,0 +1,61 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: acg-ns
+---
+apiVersion: v1
+kind: Service
+metadata:
+  namespace: acg-ns
+  name: acg-lb
+spec:
+  type: LoadBalancer
+  ports:
+  - port: 80
+  selector:
+    app: acg-stress
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  namespace: acg-ns
+  labels:
+    app: acg-stress
+  name: acg-web
+spec:
+  selector:
+    matchLabels:
+      app: acg-stress
+  replicas: 1
+  strategy:
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 0
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app: acg-stress
+    spec:
+      containers:
+      - image: k8s.gcr.io/hpa-example
+        name: stresser
+        ports:
+          - containerPort: 80
+        resources:
+          requests:
+            cpu: 0.2
+---
+apiVersion: autoscaling/v1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: acg-hpa
+  namespace: acg-ns
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: acg-web
+  minReplicas: 1
+  maxReplicas: 10
+  targetCPUUtilizationPercentage: 50

lesson-code-k8s/web-deploy.yml

@@ -0,0 +1,23 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: simple-web
+  labels:
+    customer: acg
+spec:
+  selector:
+    matchLabels:
+      app: web
+  replicas: 3
+  strategy:
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app: web
+    spec:
+      containers:
+      - image: nigelpoulton/acg-web:0.1
+        name: web-ctr
+        ports:
+        - containerPort: 8080

lesson-code-k8s/web-lb.yml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: web-svc
+  labels:
+    app: web
+spec:
+  type: LoadBalancer
+  ports:
+  - port: 80
+    targetPort: 8080
+  selector:
+    app: web