Node.js microservices in kubernetes example

In this repository, you will find three example microservices.

• App.Dashboard, which serves as frontend and displays data from other microservices
• App.Users, which will return 'Users'
• App.Computers, which will return 'Computers'

This microservices can be deployed in three modes.

1. Development/debug mode

Run from your computer. You can then browse to http://localhost:3000/ to visit your Dashboard, which pulls data from other two microservices.

# Install dependencies
npm install
pushd App.Dashboard
npm install
popd
pushd App.Users
npm install
popd
pushd App.Computers
npm install
popd
# Start three node.js instances for each app
npm start

2. Docker mode

Run within docker. Download our example images or build your own (see Build docker images and deploy below) and deploy to your docker instance. You can then browse to http://localhost:3000/ to visit your Dashboard, which pulls data from other two microservices.

$Dns = "10.0.0.10"
$ComputerName = "my-work-pc"
$Domain = "Domain.local"
# Pull images
docker pull houbystudio/nodejs-docker-example-dashboard
docker pull houbystudio/nodejs-docker-example-users
docker pull houbystudio/nodejs-docker-example-computers
# Start each docker image with your Computer.domain name and DNS server
docker run --env COMPUTERNAME=$ComputerName --env USERDNSDOMAIN=$Domain --dns $Dns -p 3000:3000 -d houbystudio/nodejs-docker-example-dashboard
docker run --dns $Dns -p 3002:3001 -d houbystudio/nodejs-docker-example-users
docker run --dns $Dns -p 3002:3002 -d houbystudio/nodejs-docker-example-computers

3. Kubernetes mode

TODO:

How did we do it

Create dummy dashboard, users and computers applications

# npm config set strict-ssl false # Use if behind proxy with SSL inspection
# Create Dashboard app
mkdir App.Dashboard && pushd App.Dashboard
npm init
npm install express axios --save
popd
# Create Computers app
mkdir App.Computers && pushd App.Computers
npm init
npm install express --save
popd
# Create Users app
mkdir App.Users && pushd App.Users
npm init
npm install express --save
popd

Build docker images

pushd App.Dashboard
docker build -t houbystudio/nodejs-docker-example-dashboard .
popd
pushd App.Users
docker build -t houbystudio/nodejs-docker-example-users .
popd
pushd App.Computers
docker build -t houbystudio/nodejs-docker-example-computers .
popd