AWS IGW Using AWS Terraform

What is AWS IGW?

AWS Internet Gateway (IGW) is one of the important network components on the AWS cloud platform which facilitates the communication between the resources inside a VPC and the internet. It acts as a gateway allowing traffic from the outside world to access instances inside VPC and also allows the instances to download any required package by accessing the internet. Suppose you have created a VPC and using this VPC you have also created EC2 instances. Now if you try to connect the EC2 instance using SSH, it will throw an error. To solve this error you need to create an Internet Gateway(IGW) and attach it to VPC so that the EC2 instance can easily be accessed....

What is Terraform?

Terraform is an Infrastructure As Code tool that is allowed to create and provision infrastructure on different cloud platforms by using a declarative configurational language that is Hashicorp Configurational Language(HCL). It supports multiple cloud platforms like AWS, Azure, GCP and many more. Terraform allows organizations to use multiple cloud strategies to provision their infrastructure. This allows organizations not to depend on a single cloud platform. Apart from this, there are many problems an organization can face if Terraform is not used. For example, if an organization has created infrastructure only using AWS Console Azure Console GCP Console, or any other cloud platform Console, if any error they face in their infrastructure, then resolving such errors manually can take too much time. There will be unnecessary waste of money in such cases. But if the same task is done using Terraform, then the creation of such errors will be entirely eliminated. This increases the reliability of provisioning infrastructure on any cloud platform using Terraform. In summary, we can say, that Terraform’s simplicity, cross-platform compatibility, and automation capabilities make it an important tool to maintain control, reliability, and scalability....

Pre-requisites

Before moving to the next section you should make sure that you have installed Terraform on your system. If Terraform is not installed on your system then you can follow this detailed geeks for geeks article Setup Terraform On Linux and Windows Machine to install Terraform on your system....

Steps To Create AWS IGW Using AWS Terraform

Step 1: First mention the cloud provider and also the region in which you want to create an AWS Internet Gateway....

Conclusion

Here in this guide you have first learned about what is Internet Gateway(IGW) and how it helps to access instances inside a VPC from the internet . Then you have learned What is Terraform and advantages of using Terraform instead of any cloud platform Console to provision Infrastructure . After this you have created an Internet Gateway on the AWS cloud platform using Terraform and checked whether EC2 Instance inside the VPC can be accessed from the Internet or not ....

AWS IGW Using AWS Terraform – FAQ’s

What is the role of IGW ?...