Quick and dirty CDK workshop

• Install node

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
source .bashrc
nvm install 12.16.3

node --version
npm --version

• Install the CDK cli

npm install -g aws-cdk

• Create the application

export PREFIX=<your prefix>
mkdir $PREFIX && cd $PREFIX

# We will init everything manually this time
# cdk init app --language javascript

npm init

• Install dependencies

npm install --save \
  @aws-cdk/core \
  @aws-cdk/aws-ec2 

• Create the stack script

cat << EOF > index.js
const cdk = require('@aws-cdk/core');
const ec2 = require('@aws-cdk/aws-ec2');

class SimpleDemoStack extends cdk.Stack {
  constructor(app, id) {
    super(app, id);
    const vpc = new ec2.Vpc(this, 'VPC');
  }
}

const app = new cdk.App();
new SimpleDemoStack(app, '${PREFIX}SimpleDemoStack');
EOF

• Configure the CDK

cat << EOF > cdk.json
{
  "app" : "node index"
}
EOF

• Generate the cloudformation template

cdk synth
cat cdk.out/*.json

• Check the security of the template with a linter

sudo apt-get install ruby-full
sudo gem install cfn-nag
cfn_nag_scan --input-path cdk.out/*.template.json 

• Set the deployment region

export AWS_DEFAULT_REGION=eu-west-1

• Init the CDK infrastructure

cdk bootstrap

• Check what resources are going to be created

cdk diff

• Deploy all things!

cdk deploy

• Include a security group, if you are inclined to do so:

cat << EOF > index.js
const cdk = require('@aws-cdk/core');
const ec2 = require('@aws-cdk/aws-ec2');


class SimpleDemoStack extends cdk.Stack {
  constructor(app, id) {
    super(app, id);
    const vpc = new ec2.Vpc(this, 'VPC');
    
    const webSecurityGroup = new ec2.SecurityGroup(this, 'webSecurityGroup', {
      description: 'Allow access to webservers',
      groupName: 'sgweb',
      vpc: vpc
    });
    webSecurityGroup.addIngressRule(new ec2.AnyIPv4(), new ec2.TcpPort(80), 'allow http access from any ip');
    webSecurityGroup.addIngressRule(new ec2.AnyIPv4(), new ec2.TcpPort(443), 'allow https access from any ip');
  }
}

const app = new cdk.App();
new SimpleDemoStack(app, '${PREFIX}SimpleDemoStack');
EOF

• Clean the house

cdk destroy

RDS + ASG + ELB (classic) example

• Get the project source code:

git clone https://github.com/ciberado/quick-cdk-workshop
cd quick-cdk-workshop/demoasg
npm install

• Replace the name of the stack:

PREFIX=<put_your_own_prefix_here>
sed -i "s/PokemonStack/${PREFIX}PokemonStack/g" index.js

• Deploy it:

export AWS_DEFAULT_REGION=eu-west-1
cdk bootstrap
cdk diff
cdk deploy

• Check for the outputs:

STACK_NAME=$(cdk ls)
aws cloudformation describe-stacks \
  --stack-name $STACK_NAME \
  --region eu-west-1 \
  --query Stacks[0].Outputs \
  --output table

• Clean up everything

cdk destroy

Fargate service with ALB

• Get the project source code:

git clone https://github.com/ciberado/quick-cdk-workshop
cd quick-cdk-workshop/demofargate
npm install

• Replace the name of the stack:

PREFIX=<put_your_own_prefix_here>
sed -i "s/FargatePokemonStack/${PREFIX}FargatePokemonStack/g" index.ts

• Compile typescript to js:

npm run build

• Deploy it:

export AWS_DEFAULT_REGION=eu-west-1
cdk bootstrap
cdk diff
cdk deploy

• Clean up everything

cdk destroy

For more information, visit the complete CDK workshop and the official examples.