Infrastructure as a Code (IaC)
- This allows us to declare the infrastructure i.e. we would represent our needs in some format and the tool does the rest of creation/deletion/updating the resources.
- We deal with declarative language and desired state.
Infra Provisioning
- This is about a tool which lets you express your infrastructure as a code and manages multiple environments and reusability
Terraform
- This is infra provisioning tool and supports infrastructure as code, terraform uses Hashicorp configuration language
HCL
Ways of Working with Terraform (First version)
- Create the infrastructure manually atleast once as this helps
- in figuring out inputs to be passed.
- order of creation
- every resource to be part of architecture
- Figure out the right provider and resources
Syntaxes in Terraform
- Provider: Refer Here for official docs
- syntax
provider '<name-of-provider>' {
arg-name-1 = arg-value-1
..
arg-name-n = arg-value-n
} - Example
provider "aws" {
region = "us-west-2"
} - Generally we need to configure credentials for providers as well.
- syntax
-
resource: This represents the infrastructural element to be created Refer Here
- syntax
resource "<resource_type>" "name" {
arg-name-1 = arg-value-1
..
arg-name-n = arg-value-n
} - Example
“`
resource "aws_instance" "fromtf" {
ami = "ami-03f65b8614a860c29"
tags = {
Name ="from terraform"
}
key_name = "my_id_rsa"
vpc_security_group_ids = ["sg-05adaf452b268c335"]
instance_type = "t2.micro"</li>
</ul>
}
“` - Installing terraform Refer Here
- Commands
choco install vscode terraform -y
Note:
- Windows: Refer Here for installing necessary softwares
- git
- windows terminal for windows 10 Refer Here
- Mac:
- Homebrew Refer Here
- git
brew install git - visual studio code
brew install --cask visual-studio-code - terraform
brew install terraform - azure cli
brew install azure-cli
- syntax
