Neil Haddley - Developer & Technical Consultant

Sails (Part 3)

Neil Haddley • October 13, 2021

Sails and the Amazon Elastic Kubernetes Service

Dockerfile

Docker Container

Dockerfile

Command Palette...

Docker Image: Build Image...

haddleysails:latest

Docker Desktop

Running the Docker image on a laptop.

The haddleysails image is displayed in Docker Desktop

Running the image

accessing the container using http://localhost

using the container running locally to retrieve the articles data

remove the container

no containers running

Docker Desktop support for Kubernettes

Running Kubernettes pods on a laptop.

Using kubectl to run multiple copies of the Docker image

The Kubernettes pods running

accessing the pods using http://localhost

using the pods running locally to retrieve the articles data

removing the application/pods

no pods/containers running

Amazon Container Services

The Docker image is pushed to the Amazon Elastic Container Registry

Create repository

haddleysails

Create repository

haddleysails repository

View push commands

macOS / Linux commands

Windows commands

docker build -t haddleysails .

build finished

commands

docker tag ...

docker push ...

eksctl

Using eksctl to create the Amazon Elastic Kubernetes Service cluster.

eksctl create cluster --name haddley-sails

no clusters

creating haddley-sails

The Amazon EKS cluster is ready

The haddley-sails cluster is active

Two nodes in the cluster

Workloads

kubectl

Using kubectl to deploy the application to the cluster

kubectl apply -f haddley-sails.yaml

2 pods desired

2 pods ready

Pods

external ip address

home page

Articles

Dockfile

YAML

1FROM node:8
2LABEL maintainer="Azure App Service Container Images <appsvc-images@microsoft.com>"
3
4# Create app directory
5WORKDIR /app
6
7# Bundle app source
8COPY . .
9RUN npm install
10
11EXPOSE 1337
12CMD [ "npm", "start" ]

haddley-sails-local.yaml

YAML

1apiVersion: apps/v1
2kind: Deployment
3metadata:
4  name: haddley-sails-deployment
5  labels:
6    app: haddley-sails
7spec:
8  replicas: 2
9  selector:
10    matchLabels:
11      app: haddley-sails
12  template:
13    metadata:
14      labels:
15        app: haddley-sails
16    spec:
17      containers:
18        - name: haddley-sails
19          image: haddleysails
20          imagePullPolicy: Never
21          ports:
22            - containerPort: 1337
23---
24apiVersion: v1
25kind: Service
26metadata:
27  name: haddley-sails-service
28spec:
29  selector:
30    app: haddley-sails
31  ports:
32    - protocol: TCP
33      port: 80
34      targetPort: 1337
35  type: LoadBalancer

haddley-sails.yaml

YAML

1apiVersion: apps/v1
2kind: Deployment
3metadata:
4  name: haddley-sails-deployment
5  labels:
6    app: haddley-sails
7spec:
8  replicas: 2
9  selector:
10    matchLabels:
11      app: haddley-sails
12  template:
13    metadata:
14      labels:
15        app: haddley-sails
16    spec:
17      containers:
18        - name: haddley-sails
19          image: haddleysails:latest
20          ports:
21            - containerPort: 1337
22---
23apiVersion: v1
24kind: Service
25metadata:
26  name: haddley-sails-service
27spec:
28  selector:
29    app: haddley-sails
30  ports:
31    - protocol: TCP
32      port: 80
33      targetPort: 1337
34  type: LoadBalancer