Getting Started with AWS Cloudformation
Our template is created in JSON or YAML script. We will be discussing the JSON script in this article. JSON is a text-based format that represents structured data based onresource JavaScript object syntax. It carries the AWS resources details in the structured format according to which AWS infrastructure is created.
Structure of Cloudformation JSON Template
- Format version: It defines the version of a template.
- Description: Any extra description or comments about your template are written in the description of the template.
- Metadata: It can be used to provide further information using JSON objects.
- Parameters: Parameters are used when you want to provide custom or dynamic values to the stack during runtime. Therefore, we can customize templates using parameters.
- Mappings: Mapping in the JSON template helps you to map keys to a corresponding named value that you specify in a conditional parameter.
- Conditions: Conditions are used to define if certain resources are created or when the resource’s properties are assigned to a value when the stack is created.
- Transform: Transform helps in reusing the template components by building a simple declarative language for AWS CloudFormation.
- Resources: In this, you can specify the properties of AWS resources (AWS EC2 instance, S3 bucket, AWS lambda ) you want in your stack.
- Output: The output defines the value which is generated as an output when you view your cloud formationstack properties.
What is AWS Cloudformation?
Amazon Web Services(AWS) offers cloud formation as a service by which you can provision and manage complicated services offered by AWS by using the code. Cloudformation will help you to manage the infrastructure and the services in the form of a declarative way.
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