AWS CloudFormation gives developers and systems administrators an easy way to create and manage a collection of related AWS resources, provisioning and updating them in an orderly and predictable fashion.
Infrastructure as a code
As developers and DevOps engineers want to manage their infrastructure as a code using tools like AWS CloudFormation and HashiCorp Terraform, Spotinst is happy to release an easy integration for CloudFormation that ease the process of using Elastigroup custom resource, as part of a CloudFormation stack.
Elastigroup is the equivalent product to Amazon AutoScaling Groups, and therefore it is recommended to replace your AWS::AutoScaling::AutoScalingGroup, AWS::AutoScaling::LaunchConfiguration and AWS::AutoScaling::ScalingPolicy with a new resource called "Custom::elasticgroup"
High Level Overview
Step by Step
1. Generate A Personal Access token from Spotinst
Generating a Personal access token from your Spotinst account. Go to Settings -> Personal Access Tokens -> Generate
Once you have the Personal Access Token, save it – we should use it later on in the CloudFormation template.
2. Create an Elastigroup
Create a Spotinst Elasticgroup custom resource with the Personal Access Token and Spotinst’s Lambda ARN.
Spotinst Lambda Function
The Lambda ARN is region dependent, please set the correct region:
arn:aws:lambda:<REGION>:178579023202:function:spotinst-cloudformation
example for us-east-1:
arn:aws:lambda:us-east-1:178579023202:function:spotinst-cloudformation
In the following example of the CloudFormation template, we create a custom resource "Type": "Custom::elasticgroup"
This resource contains the following elements that need to be covered:
accessToken– Spotinst Access Token that was generated in step #1.ServiceToken– Spotinst’s Lambda function ARN.group– Spotinst Elastigroup configuration.
{
"AWSTemplateFormatVersion": "2010-09-09",
"Resources": {
"CFCR195GN": {
"Type": "Custom::elasticgroup",
"Properties": {
"ServiceToken": "arn:aws:lambda:us-east-1:178579023202:function:spotinst-cloudformation",
"accessToken": "4378fdd1bb97e9dba31b0b19bd1234123465vr65c6dctdx4e55e35d129837198273981723", // Your Personal AccessToken
"group": {
"name": "Spotinst-CloudFormation",
"strategy": {
"risk": 100,
"availabilityVsCost": "balanced"
},
"capacity": {
"target": 1,
"minimum": 1,
"maximum": 1
},
"scaling": {},
"compute": {
"instanceTypes": {
"ondemand": "m3.large",
"spot": [
"m3.large",
"m4.large",
"c3.large",
"c4.large"
]
},
"availabilityZones": [
{
"name": "us-west-2c",
"subnetId": "subnet-fa8861a3"
},
{
"name": "us-west-2b",
"subnetId": "subnet-cw219d2"
}
],
"launchSpecification": {
"monitoring": false,
"imageId": "ami-63b25203",
"keyPair": "my-keypair",
"securityGroupIds": [
"sg-dd68abba"
]
},
"product": "Linux/UNIX"
},
"scheduling": {},
"thirdPartiesIntegration": {}
}
}
}
}
}
