AWS Cloudformation

AWS Cloudformation AWS CloudFormation is a service that helps you model and set up your Amazon Web Services resources so that you can spend less time managing those resources and more time focusing on your applications that run in AWS. AWS Cloudformation In the given screenshot, template is a. JSON or .Yaml file with parameter definitions, resource and configuration actions. CloudFormation works as a framework for creating a new stack, updating a stack, error detection and/or rollback. Stack is basically used to configure AWS services. Why CloudFormation? AWS Cloudformation Getting Started, Log in to here Enter Username and Password Go to services Search CloudFormation in Management & Governance You will see running stacks there and have an option for creating new stack AWS Cloudformation What is a stack? The CloudFormation Stack provides the ability to deploy, update and delete a template and its associated collection of resources by using the AWS Management Console, AWS Command Line Interface or APIs. AWS Cloudformation Before going further let’s discuss about Templates and create a sample template. What are Templates? A template is a JSON-formatted text file that describes your AWS infrastructure. Templates include several major sections. The Resources section is the only section that is required. You can use AWS CloudFormation's sample templates or create your own templates to describe the AWS resources and any associated dependencies or runtime parameters required to run your application. AWS Cloudformation The above screenshot is just a sample template. Resources is the only mandatory parameter there. Now let’s create a new sample template and create a new stack using that template. In my template I am creating a new EC2 Instance along with Security group. Sample Template Create a new EC2 Instance with Security Group. Here is my JSON template file, you can modify according to the need. { "AWSTemplateFormatVersion": "2010-09-09", "Description": "AWS CloudFormation Sample Template EC2InstanceWithSecurityGroupSample: Create an Amazon EC2 instance running the Amazon Linux AMI. The AMI is chosen based on the region in which the stack is run. This example creates an EC2 security group for the instance to give you SSH access. **WARNING** This template creates an Amazon EC2 instance. You will be billed for the AWS resources used if you create a stack from this template.", "Parameters": { "KeyName": { "Description": "Name of an existing EC2 KeyPair to enable SSH access to the instance", "Type": "AWS::EC2::KeyPair::KeyName", "ConstraintDescription": "must be the name of an existing EC2 KeyPair." }, "InstanceType": { "Description": "WebServer EC2 instance type", "Type": "String", "Default": "t2.small", "AllowedValues": ["t1.micro", "t2.nano", "t2.micro", "t2.small", "t2.medium", "t2.large", "m1.small", "m1.medium", "m1.large", "m1.xlarge", "m2.xlarge", "m2.2xlarge", "m2.4xlarge", "m3.medium", "m3.large", "m3.xlarge", "m3.2xlarge", "m4.large", "m4.xlarge", "m4.2xlarge", "m4.4xlarge", "m4.10xlarge", "c1.medium", "c1.xlarge", "c3.large", "c3.xlarge", "c3.2xlarge", "c3.4xlarge", "c3.8xlarge", "c4.large", "c4.xlarge", "c4.2xlarge", "c4.4xlarge", "c4.8xlarge", "g2.2xlarge", "g2.8xlarge", "r3.large", "r3.xlarge", "r3.2xlarge", "r3.4xlarge", "r3.8xlarge", "i2.xlarge", "i2.2xlarge", "i2.4xlarge", "i2.8xlarge", "d2.xlarge", "d2.2xlarge", "d2.4xlarge", "d2.8xlarge", "hi1.4xlarge", "hs1.8xlarge", "cr1.8xlarge", "cc2.8xlarge", "cg1.4xlarge"], "ConstraintDescription": "must be a valid EC2 instance type." }, "SSHLocation": { "Description": "The IP address range that can be used to SSH to the EC2 instances", "Type": "String", "MinLength": "9", "MaxLength": "18", "Default": "0.0.0.0/0", "AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})", "ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x." } }, "Mappings": { "AWSInstanceType2Arch": { "t1.micro": { "Arch": "HVM64" }, "t2.nano": { "Arch": "HVM64" }, "t2.micro": { "Arch": "HVM64" }, "t2.small": { "Arch": "HVM64" }, "t2.medium": { "Arch": "HVM64" }, "t2.large": { "Arch": "HVM64" }, "m1.small": { "Arch": "HVM64" }, "m1.medium": { "Arch": "HVM64" }, "m1.large": { "Arch": "HVM64" }, "m1.xlarge": { "Arch": "HVM64" }, "m2.xlarge": { "Arch": "HVM64" }, "m2.2xlarge": { "Arch": "HVM64" }, "m2.4xlarge": { "Arch": "HVM64" }, "m3.medium": { "Arch": "HVM64" }, "m3.large": { "Arch": "HVM64" }, "m3.xlarge": { "Arch": "HVM64" }, "m3.2xlarge": { "Arch": "HVM64" }, "m4.large": { "Arch": "HVM64" }, "m4.xlarge": { "Arch": "HVM64" }, "m4.2xlarge": { "Arch": "HVM64" }, "m4.4xlarge": { "Arch": "HVM64" }, "m4.10xlarge": { "Arch": "HVM64" }, "c1.medium": { "Arch": "HVM64" }, "c1.xlarge": { "Arch": "HVM64" }, "c3.large": { "Arch": "HVM64" }, "c3.xlarge": { "Arch": "HVM64" }, "c3.2xlarge": { "Arch": "HVM64" }, "c3.4xlarge": { "Arch": "HVM64" }, "c3.8xlarge": { "Arch": "HVM64" }, "c4.large": { "Arch": "HVM64" }, "c4.xlarge": { "Arch": "HVM64" }, "c4.2xlarge": { "Arch": "HVM64" }, "c4.4xlarge": { "Arch": "HVM64" }, "c4.8xlarge": { "Arch": "HVM64" }, "g2.2xlarge": { "Arch": "HVMG2" }, "g2.8xlarge": { "Arch": "HVMG2" }, "r3.large": { "Arch": "HVM64" }, "r3.xlarge": { "Arch": "HVM64" }, "r3.2xlarge": { "Arch": "HVM64" }, "r3.4xlarge": { "Arch": "HVM64" }, "r3.8xlarge": { "Arch": "HVM64" }, "i2.xlarge": { "Arch": "HVM64" }, "i2.2xlarge": { "Arch": "HVM64" }, "i2.4xlarge": { "Arch": "HVM64" }, "i2.8xlarge": { "Arch": "HVM64" }, "d2.xlarge": { "Arch": "HVM64" }, "d2.2xlarge": { "Arch": "HVM64" }, "d2.4xlarge": { "Arch": "HVM64" }, "d2.8xlarge": { "Arch": "HVM64" }, "hi1.4xlarge": { "Arch": "HVM64" }, "hs1.8xlarge": { "Arch": "HVM64" }, "cr1.8xlarge": { "Arch": "HVM64" }, "cc2.8xlarge": { "Arch": "HVM64" } }, "AWSInstanceType2NATArch": { "t1.micro": { "Arch": "NATHVM64" }, "t2.nano": { "Arch": "NATHVM64" }, "t2.micro": { "Arch": "NATHVM64" }, "t2.small": { "Arch": "NATHVM64" }, "t2.medium": { "Arch": "NATHVM64" }, "t2.large": { "Arch": "NATHVM64" }, "m1.small": { "Arch": "NATHVM64" }, "m1.medium": { "Arch": "NATHVM64" }, "m1.large": { "Arch": "NATHVM64" }, "m1.xlarge": { "Arch": "NATHVM64" }, "m2.xlarge": { "Arch": "NATHVM64" }, "m2.2xlarge": { "Arch": "NATHVM64" }, "m2.4xlarge": { "Arch": "NATHVM64" }, "m3.medium": { "Arch": "NATHVM64" }, "m3.large": { "Arch": "NATHVM64" }, "m3.xlarge": { "Arch": "NATHVM64" }, "m3.2xlarge": { "Arch": "NATHVM64" }, "m4.large": { "Arch": "NATHVM64" }, "m4.xlarge": { "Arch": "NATHVM64" }, "m4.2xlarge": { "Arch": "NATHVM64" }, "m4.4xlarge": { "Arch": "NATHVM64" }, "m4.10xlarge": { "Arch": "NATHVM64" }, "c1.medium": { "Arch": "NATHVM64" }, "c1.xlarge": { "Arch": "NATHVM64" }, "c3.large": { "Arch": "NATHVM64" }, "c3.xlarge": { "Arch": "NATHVM64" }, "c3.2xlarge": { "Arch": "NATHVM64" }, "c3.4xlarge": { "Arch": "NATHVM64" }, "c3.8xlarge": { "Arch": "NATHVM64" }, "c4.large": { "Arch": "NATHVM64" }, "c4.xlarge": { "Arch": "NATHVM64" }, "c4.2xlarge": { "Arch": "NATHVM64" }, "c4.4xlarge": { "Arch": "NATHVM64" }, "c4.8xlarge": { "Arch": "NATHVM64" }, "g2.2xlarge": { "Arch": "NATHVMG2" }, "g2.8xlarge": { "Arch": "NATHVMG2" }, "r3.large": { "Arch": "NATHVM64" }, "r3.xlarge": { "Arch": "NATHVM64" }, "r3.2xlarge": { "Arch": "NATHVM64" }, "r3.4xlarge": { "Arch": "NATHVM64" }, "r3.8xlarge": { "Arch": "NATHVM64" }, "i2.xlarge": { "Arch": "NATHVM64" }, "i2.2xlarge": { "Arch": "NATHVM64" }, "i2.4xlarge": { "Arch": "NATHVM64" }, "i2.8xlarge": { "Arch": "NATHVM64" }, "d2.xlarge": { "Arch": "NATHVM64" }, "d2.2xlarge": { "Arch": "NATHVM64" }, "d2.4xlarge": { "Arch": "NATHVM64" }, "d2.8xlarge": { "Arch": "NATHVM64" }, "hi1.4xlarge": { "Arch": "NATHVM64" }, "hs1.8xlarge": { "Arch": "NATHVM64" }, "cr1.8xlarge": { "Arch": "NATHVM64" }, "cc2.8xlarge": { "Arch": "NATHVM64" } }, "AWSRegionArch2AMI": { "us-east-1": { "HVM64": "ami-0080e4c5bc078760e", "HVMG2": "ami-0aeb704d503081ea6" }, "us-west-2": { "HVM64": "ami-01e24be29428c15b2", "HVMG2": "ami-0fe84a5b4563d8f27" }, "us-west-1": { "HVM64": "ami-0ec6517f6edbf8044", "HVMG2": "ami-0a7fc72dc0e51aa77" }, "eu-west-1": { "HVM64": "ami-08935252a36e25f85", "HVMG2": "ami-0d5299b1c6112c3c7" }, "eu-west-2": { "HVM64": "ami-01419b804382064e4", "HVMG2": "NOT_SUPPORTED" }, "eu-west-3": { "HVM64": "ami-0dd7e7ed60da8fb83", "HVMG2": "NOT_SUPPORTED" }, "eu-central-1": { "HVM64": "ami-0cfbf4f6db41068ac", "HVMG2": "ami-0aa1822e3eb913a11" }, "eu-north-1": { "HVM64": "ami-86fe70f8", "HVMG2": "ami-32d55b4c" }, "ap-northeast-1": { "HVM64": "ami-00a5245b4816c38e6", "HVMG2": "ami-09d0e0e099ecabba2" }, "ap-northeast-2": { "HVM64": "ami-00dc207f8ba6dc919", "HVMG2": "NOT_SUPPORTED" }, "ap-northeast-3": { "HVM64": "ami-0b65f69a5c11f3522", "HVMG2": "NOT_SUPPORTED" }, "ap-southeast-1": { "HVM64": "ami-05b3bcf7f311194b3", "HVMG2": "ami-0e46ce0d6a87dc979" }, "ap-southeast-2": { "HVM64": "ami-02fd0b06f06d93dfc", "HVMG2": "ami-0c0ab057a101d8ff2" }, "ap-south-1": { "HVM64": "ami-0ad42f4f66f6c1cc9", "HVMG2": "ami-0244c1d42815af84a" }, "us-east-2": { "HVM64": "ami-0cd3dfa4e37921605", "HVMG2": "NOT_SUPPORTED" }, "ca-central-1": { "HVM64": "ami-07423fb63ea0a0930", "HVMG2": "NOT_SUPPORTED" }, "sa-east-1": { "HVM64": "ami-05145e0b28ad8e0b2", "HVMG2": "NOT_SUPPORTED" }, "cn-north-1": { "HVM64": "ami-053617c9d818c1189", "HVMG2": "NOT_SUPPORTED" }, "cn-northwest-1": { "HVM64": "ami-0f7937761741dc640", "HVMG2": "NOT_SUPPORTED" } } }, "Resources": { "EC2Instance": { "Type": "AWS::EC2::Instance", "Properties": { "InstanceType": { "Ref": "InstanceType" }, "SecurityGroups": [{ "Ref": "InstanceSecurityGroup" }], "KeyName": { "Ref": "KeyName" }, "ImageId": { "Fn::FindInMap": ["AWSRegionArch2AMI", { "Ref": "AWS::Region" }, { "Fn::FindInMap": ["AWSInstanceType2Arch", { "Ref": "InstanceType" }, "Arch"] }] } } }, "InstanceSecurityGroup": { "Type": "AWS::EC2::SecurityGroup", "Properties": { "GroupDescription": "Enable SSH access via port 22", "SecurityGroupIngress": [{ "IpProtocol": "tcp", "FromPort": "22", "ToPort": "22", "CidrIp": { "Ref": "SSHLocation" } }] } } }, "Outputs": { "InstanceId": { "Description": "InstanceId of the newly created EC2 instance", "Value": { "Ref": "EC2Instance" } }, "AZ": { "Description": "Availability Zone of the newly created EC2 instance", "Value": { "Fn::GetAtt": ["EC2Instance", "AvailabilityZone"] } }, "PublicDNS": { "Description": "Public DNSName of the newly created EC2 instance", "Value": { "Fn::GetAtt": ["EC2Instance", "PublicDnsName"] } }, "PublicIP": { "Description": "Public IP address of the newly created EC2 instance", "Value": { "Fn::GetAtt": ["EC2Instance", "PublicIp"] } } } Let’s create a new stack and ingest the template file. Go to the CloudFormation and click on Create stack. AWS Cloudformation As my template is ready, so I am choosing the Template is ready option and the template I have in my local system. I am choosing to upload a template file and browse template file and click Next. AWS Cloudformation Provide a Stack name select instance type and key name in parameters and click next. If you don’t know how to create a EC2 Key Pair, I'm going to explain that in the next article. Click Next. AWS Cloudformation I am keeping all default configurations there and click Next. AWS Cloudformation Review all configurations before hitting Create stack. If everything looks good then click Create stack button. AWS Cloudformation As you can see your stack creation is in progress, You have to wait a little bit until stack completes. AWS Cloudformation Once you see Create-Complete, that means your stack is initiated and EC2 Instance is successfully created and running. Go to services and click on EC2 Instance to check the instance and you can see running instances there. AWS Cloudformation As you can see 1 instance is running. Click on Running instances. AWS Cloudformation Here you can see new created instance is running successfully, if you click on instance then you can see the associated Security Group and IAMRole. AWS Cloudformation Conclusion In this article, we have learned about the Amazon Web Services Cloud Formation services and how to create templates and ingest that in a stack, and how to setup a new Ec2 Instance along with Role and Security Group.