Terraform

Notes

AMI ID

The AMI ID will be different based on the region you are using. The AMI ID used in this example is for the ap-south-1 region.

Creating SSH Key Pair for EC2 Instance on Windows

ssh-keygen -t rsa -b 4096 -C "example@gmail.com" -f "$HOME\.ssh\testing_key_pair"

Security Group Port Range

• from_port and to_port in a Security Group specify the port range for which the rule is applied.

Accessing Private Host using Bastion Host

1. Copy the private key to Bastion Host:

   scp -i "$HOME\.ssh\testing_key_pair" "$HOME\.ssh\testing_key_pair.pem" ec2-user@bastion-host-ip:/home/ec2-user/

2. SSH into the Bastion Host:

    ssh -i "$HOME\.ssh\testing_key_pair" ec2-user@bastion-host-ip

3. Change Ssh Key Permissions:

   chmod 400 testing_key_pair

4. SSH into the Private Host from the Bastion Host:

    ssh -i testing_key_pair ec2-user@private-host-ip

How to set the credentials for terraform connecting to the AWS

1. In main.tf as the access_key and secret_key provider "aws" { access_key = XXX secret_Key = XXX }

2. in terminal set the ENV variable EXPORT export AWS_SECRET_ACCESS_KEY=XXX export AWS_ACCESS_KEY_ID=XXX

   only the current and the present terminal

3. seting it on the user level ~/.aws/credentials

4. AWS configure using aws cli (Best Way)

   aws configure

5. Custom Terraform Enviornment Variable it should start with TF_VAR_

   export TF_VAR_avail_zone=ap-south-1

   in main.tf variable avail_zone{}

   var.avail_zone