########################_______ With variables ________#################


[ec2-user@ip-172-31-41-59 zomato-mumbai]$ cat main.tf
provider "aws" {
region = "ap-south-1"
}


### Variables ###

variable "project_name" {
default = "Zomato"
}

variable "project_env" {
default = "Dev"
}


variable "ami_mumbai" {
default = "ami-0b08bfc6ff7069aff"
}

variable "ami_ohio" {
default = "ami-08333bccc35d71140"
}


# Key pair generation

resource "aws_key_pair" "deployer" {
  key_name   = "Zomato"
  public_key = file("zomato.pub")
}

# Security group generation

resource "aws_security_group" "traffic" {
  name_prefix        = "${var.project_name} - ${var.project_env} - "
  description = "Allow ssh and http"

  ingress {
    description      = "HTTP"
    from_port        = 80
    to_port          = 80
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }


ingress {
    description      = "SSH"
    from_port        = 22
    to_port          = 22
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  egress {
    from_port        = 0
    to_port          = 0
    protocol         = "-1"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  tags = {
    Name = "${var.project_name} - ${var.project_env}"
  }
}



resource "aws_instance"  "frontend" {

   ami = var.ami_mumbai
   instance_type = "t2.micro"
   key_name =  aws_key_pair.deployer.id
   vpc_security_group_ids = [ aws_security_group.traffic.id ]
   tags = {
       "Name" = "${var.project_name} - ${var.project_env}"
   }

}


Creayed the

### Output ####
Plan: 3 to add, 0 to change, 0 to destroy.




########################_______ With map using data.aws_reion ________#################

data "aws_region" "current" {}

provider "aws" {
region = "us-east-2"
}


### Variables ###

variable "project_name" {
default = "Zomato"
}

variable "project_env" {
default = "Dev"
}


variable "ami_id" {
type = map

default = {

"ap-south-1" = "ami-0b08bfc6ff7069aff",
"us-east-2" = "ami-08333bccc35d71140"
}
}


# Key pair generation

resource "aws_key_pair" "deployer" {
  key_name   = "Zomato"
  public_key = file("zomato.pub")
}

# Security group generation

resource "aws_security_group" "traffic" {
  name_prefix        = "${var.project_name}-${var.project_env} - "
  description = "Allow ssh and http"

  ingress {
    description      = "HTTP"
    from_port        = 80
    to_port          = 80
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }


ingress {
    description      = "SSH"
    from_port        = 22
    to_port          = 22
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  egress {
    from_port        = 0
    to_port          = 0
    protocol         = "-1"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  tags = {
    Name = "${var.project_name}-${var.project_env}"
  }
}



resource "aws_instance"  "frontend" {

   ami = var.ami_id["${data.aws_region.current.name}"]
   instance_type = "t2.micro"
   key_name =  aws_key_pair.deployer.id
   vpc_security_group_ids = [ aws_security_group.traffic.id ]
   tags = {
       "Name" = "${var.project_name} - ${var.project_env}"
   }

}

###Output####

Plan: 3 to add, 0 to change, 0 to destroy.


########################_______ With map using variables ________#################

provider "aws" {
region = "us-east-2"
}


### Variables ###

variable "project_name" {
default = "Zomato"
}

variable "region" {
default = "us-east-2"

}

variable "project_env" {
default = "Dev"
}


variable "ami_id" {
type = map

default = {

"ap-south-1" = "ami-0b08bfc6ff7069aff",
"us-east-2" = "ami-08333bccc35d71140"
}
}


# Key pair generation

resource "aws_key_pair" "deployer" {
  key_name   = "Zomato"
  public_key = file("zomato.pub")
}

# Security group generation

resource "aws_security_group" "traffic" {
  name_prefix        = "${var.project_name}-${var.project_env} - "
  description = "Allow ssh and http"

  ingress {
    description      = "HTTP"
    from_port        = 80
    to_port          = 80
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }


ingress {
    description      = "SSH"
    from_port        = 22
    to_port          = 22
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  egress {
    from_port        = 0
    to_port          = 0
    protocol         = "-1"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  tags = {
    Name = "${var.project_name}-${var.project_env}"
  }
}



resource "aws_instance"  "frontend" {

   ami = var.ami_id["${var.region}"]
   instance_type = "t2.micro"
   key_name =  aws_key_pair.deployer.id
   vpc_security_group_ids = [ aws_security_group.traffic.id ]
   tags = {
       "Name" = "${var.project_name} - ${var.project_env}"
   }

}


####### Lookup ##########


provider "aws" {
 region = var.region

}

variable "region" {

default = "ap-south-1"
}


variable "classmates_exp" {
description = "My classmates total IT experience"
type = map
default = {
"Chris" = "2",
"ashna" = "4",
"vysakh" = "9"

}
}

output "chris_exp" {
value = lookup(var.classmates_exp,"Chris",0)
}

output "ashna_exp" {
value = lookup(var.classmates_exp,"ashna",0)
}

output "vysak_exp" {
value = var.classmates_exp.vysakh
}

output "prince_exp" {
value = lookup(var.classmates_exp,"prince",0)
}

#### Output ####

Changes to Outputs:
  + ashna_exp  = "4"
  + chris_exp  = "2"
  + prince_exp = "0"
  + vysak_exp  = "9"

You can apply this plan to save these new output values to the Terraform state, without changing any real
infrastructure.




───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

Note: You didn't use the -out option to save this plan, so Terraform can't guarantee to take exactly these actions if
you run "terraform apply" now.
[ec2-user@ip-172-31-41-59 lookup]$


#########________Copying files using lookup_________######

provider "aws" {
  region = "ap-south-1"
}

variable "mime_type" {
  type = map(any)
  default = {
    "css"   = "text/css"
    "html"  = "text/html"
    "ico"   = "image/vnd.microsoft.icon"
    "js"    = "application/javascript"
    "json"  = "application/json"
    "map"   = "application/json"
    "png"   = "image/png"
    "svg"   = "image/svg+xml"
    "txt"   = "text/plain"
    "jpg"   = "image/jpeg"
    "woff"  = "application/font-woff"
    "woff2" = "application/font-woff2"
  }
}


resource "aws_s3_object" "object" {
  bucket       = "terraform-s3bucket-zomato"
  for_each     = fileset("/home/ec2-user/test", "**/*.*")
  key          = each.key
  source       = "/home/ec2-user/test/${each.key}"
  content_type = lookup(var.mime_type, element(split(".", each.key), length(split(".", each.key)) - 1))
}

###Output ###

Apply complete! Resources: 32 added, 0 changed, 0 destroyed.
[ec2-user@ip-172-31-41-59 lookup]$