Overview

https://blog.toddaas.com/posts/ec2_warm_pools_are_useful_part_1/

https://blog.toddaas.com/posts/ec2_warm_pools_are_useful_part_2/


Install

Typescript

npm install @pandanus-cloud/cdk-autoscaling-warmpool

or

yarn add @pandanus-cloud/cdk-autoscaling-warmpool

Usage

import { WarmPool } from '@pandanus-cloud/cdk-autoscaling-warmpool';
import * as cdk from 'aws-cdk-lib';
import * as as from 'aws-cdk-lib/aws-autoscaling';
import * as ec2 from 'aws-cdk-lib/aws-ec2';
import * as iam from 'aws-cdk-lib/aws-iam';

const asgRole = new iam.Role(this, 'asgRole', {
assumedBy: new iam.ServicePrincipal('ec2.amazonaws.com'),
roleName: 'asgRole',
managedPolicies: [
iam.ManagedPolicy.fromAwsManagedPolicyName(
'service-role/AmazonEC2RoleforSSM',
),
],
});

// Autoscaling Group (ASG)
const asg = new as.AutoScalingGroup(this, 'asg', {
vpc,
instanceType: ec2.InstanceType.of(
ec2.InstanceClass.BURSTABLE2,
ec2.InstanceSize.MICRO,
),
// The latest Amazon Linux image of a particular generation
machineImage: ec2.MachineImage.latestAmazonLinux2(),
ssmSessionPermissions: true,
minCapacity: 3,
maxCapacity: 6,
desiredCapacity: 3,
role: asgRole,
healthCheck: as.HealthCheck.elb({
grace: cdk.Duration.seconds(0),
}),
autoScalingGroupName: 'asg',
defaultInstanceWarmup: cdk.Duration.seconds(0),
});

// Reference to the @pandanus-cloud/cdk-autoscaling-warmpool CDK Construct
new WarmPool(this, 'warmPool', {
asg: asg,
state: 'STOPPED',
maxPreparedCapacity: 1,
minPoolSize: 1,
});