V6-9 Terraform State - Terraform Lifecycle Rules -Importing Resources

 V6-9 Terraform State - Terraform Lifecycle Rules -Importing Resources

Terraform State

Creating an instance  

  provider.tf file contents

  provider "aws" {
  region     = "us-west-2"
  access_key = "xyz"
  secret_key = "xyz"
}

main.tf file contents

resource "aws_instance" "web1" {
  ami           = "ami-083ac7c7ecf9bb9b0"
  instance_type = "t2.micro"
}

resource "aws_instance" "web2" {
  ami           = "ami-083ac7c7ecf9bb9b0"
  instance_type = "t2.micro"
}

resource "aws_s3_bucket" "bucket1" {
  bucket = "my-tf-test-bucketxyzdf"            #give the unique name of bucket
}

Terraform Remote State

Creating an instance & Storing state in remote backed  

  provider.tf file contents

  
 
 provider "aws" {
  region     = "us-west-2"
  access_key = "xyz"
  secret_key = "xyz"
}

terraform {
  backend "s3" {
    bucket = "urbacketname"                          #ur created bucket name                  
    key    = "terraform.tfstate"
    region = "us-west-2"
    access_key = "xyz"
    secret_key = "xyz"
    dynamodb_table ="tf_state_lock"
  }
}

main.tf file contents

resource "aws_instance" "web1" {
  ami           = "ami-083ac7c7ecf9bb9b0"
  instance_type = "t2.micro"
}

resource "aws_s3_bucket" "bucket1" {
  bucket = "my-tf-test-bucket345672"              #unique name
}

Create another folder dev2/dev3 as showed in the video , copy same conf files, and add the web2 instance code and test it

resource "aws_instance" "web2" {
  ami           = "ami-083ac7c7ecf9bb9b0"
  instance_type = "t2.micro"
}

Terraform Lifecycle Rules

provider.tf file contents

  
 
 provider "aws" {
  region     = "us-west-2"
  access_key = "xyz"
  secret_key = "xyz"
}

main.tf file contents

resource "aws_vpc" "main" {
  cidr_block = "10.0.0.0/16"

}

resource "aws_subnet" "Subnet1" {
  vpc_id     = aws_vpc.main.id
  cidr_block = "10.0.1.0/24"

  tags = {
    Name = "Subnet1"
  }

}

resource "aws_subnet" "Subnet2" {
  vpc_id     = aws_vpc.main.id
  cidr_block = "10.0.3.0/24"

  tags = {
    Name = "Subnet2"
  }
  lifecycle {
    create_before_destroy = true
       ignore_changes = [

      tags,
    ]
  }
}

Importing Resources into tf state

you can manually create instance and try to import using tf import command, which we have discussed in the video

Task1

main.tf file contents

  
 resource "aws_instance" "web" {

}

resource "aws_s3_bucket" "mybucket" {
  
}
 

Task2

main.tf file contents

  
resource "aws_instance" "web1" {
  ami           = "ami-083ac7c7ecf9bb9b0"
  instance_type = "t2.micro"
}

resource "aws_instance" "web2" {
  ami           = "ami-083ac7c7ecf9bb9b0"
  instance_type = "t2.micro"
}
 

Presentation Link : Terraform_V6-9_TFState_Lifecyclemgmt_Import