Provider:Terraform relies on plugins called providers to interact with remote systems. Amazon EC2 enables you to scale up or down the computations such as memory or CPU when needed. Thats where IaC tools come into the picture. Creating one server manually is okay, but imagine if you need to create hundreds of servers with the same configuration. Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/. Using an existing key pair looks as simple as-, If you are creating this Key Pair for learning purposes, you can go ahead and delete your key pair. opt for EC2 Instance Connect. Another more simple command is terraform state list. A better way . Now that everything else has been set up, we are ready to set up the EC2 instance. It also guarantees that what we see in the planning phase would be applied when we go for committing it. This main.tf will read values of variables from variables.tf and terraform.tfvars. Lets execute terraform destroy to tear down our infrastructure with one command. We will be running our EC2 instance on Ubuntu 20.04. Now lets use the output returned for ec2_remote_access and ssh into our EC2 instance. Prerequisites To follow this tutorial you will need: The Terraform CLI (1.2.0+) installed. Also, we have specified the region in which we would like terraform to create my resources. The best practice is to keep changing the API Access Key and recreating it. Bootstrap the EC2 instance with a script that will install and start Jenkins. Once we have the final configuration file, create a terraform file main.tf and paste the content of it. Whenever we want this IP, we can come to this directory and execute terraform outputto get it. In simple words, its a virtual machine similar to an actual server and you can use it to deploy your application. The consent submitted will only be used for data processing originating from this website. Here is the sample Terraform Configuration file saved with *.tf extension. AWS EC2 Instance Lab Technologies Planning to Use : 1. terraform apply command will create the resources on the AWS mentioned in the main.tf file. Create a folder in opt directory namedterraform-for_each-demoand switch to this folder. Terraform is a Single file binary which you can download and run it without any additional installation. . Try creating an instance, choose an AMI and see the Id of the AMI and use it. Terraform (hashicorp) themselves have done that job for you on their website. Create an S3 bucket for your Jenkins Artifacts that is not open to the public. With AWS EC2, you dont need to worry about the hardware and time to develop and deploy applications on the machines. We also saw how the instance can be deleted. Install AWS CLIon your machine and configure it with the IAM user credentials. Connect to your instance using your private SSH key, (i) Each Instance gets a default user added to it, depending on its distribution. Most upvoted and relevant comments will be first. This is a Syntax of how Terraform Configuration file blockis formatted. For further actions, you may consider blocking this person and/or reporting abuse. Time to create the subnets. Once suspended, kcdchennai will not be able to comment or publish posts until their suspension is removed. AWS generates a PEM file that you should store in a safe place. The second command to be used is 'terraform plan'. You can see all the other attributes you can specify in the official documentation. Create a folder called terraform-example where the HCL files will live, then change directories to that folder. We have chosen 4096 as it is considered strong enough. To manually create an EC2 using the AWS console, (a) navigate to EC2 (under Services) -> Images -> AMIs, (b) set the filter to Pubic images (default is Owned by me ), (c) add a filter for the AMI Name: <enter image name> or <enter some keyword that uniquely identifies the image> for e.g. In the AWS console we need to remember where and what to click so we risk missing step(s). See complete example for details. This feature is only available to subscribers. Through this tutorial, you learned how to use Terraform to configure AWS VPC, EC2, and RDS instances. It will become hidden in your post, but will still be visible via the comment's permalink. Now, you should have 3 files, viz, variables.tf, terraform.tfvars and main.tf. On Your Security Credentials page click on Access keys (access key ID and secret access key) AWS access key create new access key Click on Create New Access key Copy the Access Key ID and Secret Access Key ( Note:- You can view the Secret Access Key only once, so make sure to copy it.) Terraform is an infrastructure as a code (Iac) tool that allows you to create, change, and keep infrastructure compliance. Once the command completes, you should see an output similar to below: We will verify the successful state of our deployment in a few ways. copy the public address , select key pair name , open the SSH port (22) in security group if not enabled. Auditing resources creation, deletion and updates are tracked in code so we have an audit of changes made. In our case, we are going to need 1 public subnet and 2 private subnets. terraform apply is real-time and production. These are the list of steps we are going to perform, Copy the following content and save it as main.tf and make sure that the directory has no other *.tffiles present, as terraformwould consider all the files ending with .tfextension. Simply runterraform destroyand it will delete all that you created usingmain.tf. The public key is used to encrypt and the private key to decrypt the data. Some of the Terraform blocks (elements) and their purpose is given below. Some Sample usage of these API Keys in a terraform configuration. I have given some explanation before each block on the configuration to explain the purpose of the block. Create a VPC and subnets Create an internet gateway and route table to make the subnet public Create security groups Create an ec2 instance on a public subnet and install nginx Every block of code in this article needs to be added to a .tf file and run using terraform to setup the infrastructure. Before I go any further, I think I should set the context. Login to AWS Management Console and navigate to the EC2 dashboard. Configuration: Configuration consists of one or more arguments that are specific to the resource. The AWS provider needs to be configured with the proper credentials before it can be used. Now that you know how to launch multiple AWS EC2 instances on AWS using Terraform count and Terraform for_each on Amazon Web Service. I hope you found this post helpful. Please let me know in the comment section. just leave the default settings alone. Now that you have all the Terraform configurations read for execution. Which are ami and instance_type. You can also subscribe to our newsletter below to not miss any updates from us. Now its time to begin setting up our AWS environment. Once you have read the post, you are ready to move ahead with this post further. Subscribe to our channel Now you have learnt how to create EC2 instance with Terraform and with user_data as well. First, lets start with running terraform show. In the preceding output. in such cases, It would mention that it is going to destroy. Ubuntu machine should have IAM role attached with full access to create AWS secrets in the AWS Secret Manager or administrator permissions. 3-4 June 2022. 16. Open up the main.tf file and add the following code: Now that the key pair has been created, we can go ahead and create the EC2 instance. I have specified the minimum set of parameters to create an instance above. (Click, to learn to create an IAM user with 'access_key' & 'secret_key' on AWS, ). But if you need to create multiple instances with different attributes, such as one instance with t2.medium and others with t2.micro types, you should consider using Terraform for_each. Create a new directory for your Terraform files. Sometimes while doing a modification to the existing resources, Terraform would have to destroy the resource first and recreate it. How to create Secrets in AWS Secrets Manager using Terraform in Amazon account. I am new to terraform and still learning . If you have any questions, please leave a comment. Read: Ways in Which You can Create and Manage AWS Resources. As you have downloaded the API Access and Secret keys. Time to create the security groups! Using Terraform to Create EC2 and RDS Instances Inside a Custom VPC on AWS This is the architecture diagram of what we will be creating with Terraform Background Scenario: Your team. Amend the Network Settings of your Instance. With you every step of your journey. There are so many tools in the market helps you to achieve the IaC. Either you should save these Keys as Environment variables (or) save it as a AWS Config profile. This command is used to see the changes that will take place on the infrastructure. Create an EC2using the Terraform configuration files. Step 1: The attacker gained initial access by exploiting a public-facing service in a self-managed Kubernetes cluster hosted inside an AWS cloud account. Terraform typically means transforming (a planet) so as to resemble the earth, especially so that it can support human life. terraform apply. Count, For_Each, and Ternary operators Steven Laszloffy in Level Up Coding Deploying a Two-Tier Structure with Terraform Cloud CI/CD Help Status Writers Blog Careers Privacy Terms About Text to speech Note:Useterraform destroywith caution. Create an Instance Profile allowing S3 write access for the Jenkins Server and assign the role to your Jenkins Server EC2 instance. Once you have created'variables.tf', do not forget to change values assigned to variable. Terraform configurations must declare which providers they require so that Terraform can install and use them. When you execute the above command, you can see that. We are ready with the boilerplate code. GitHub 4. In the next post we learn how to use Pulumi to create an EC2 instance. Connect to your instance with Session Manager 3. Lets check whether its created or not. Node.js doesnt stop from running other operations because of Libuv, a C++ library responsible for the event loop and asynchronously handling tasks such as network requests, DNS resolution, file system operations, data encryption, etc. Terraform configuration files for creating an AWS EC2 Instance Create a dedicated directory where we can create terraform configuration files. We must change ami_key_pair_name, ami_id and subnet_id as these are specific to the environment. Click anywhere on the image to buy it on amazon. To facilitate the team's use of Jenkins as their preferred CI/CD tool for DevOps projects, it is necessary to create a Jenkins server using Terraform. We can create the AWS Key Pair using the AWS Console, AWS CLI, or PowerShell. Create another file and name it as provider.tf. Step1: Add new user and key in the UserName, Step2: Attach Existing Policies and Select Admin, Let the Values be Default Click Next till you see the following Screen. The older your API keys are the prone they are to Malicious attacks. Delete the createdEC2 instanceusing Terraform. The Cookies collected are used only to Show customized Ads. In real-time use cases you would not be created just once EC2 instance but many at once. Execute the terraform plancommand and it would present some detailed info on what changes are going to be made into your AWS infra. All of these can manage IaC and work with different cloud providers except Cloud Formation as it was limited only to AWS. Since this is a test instance, I want to destroy the resources I have created and I can do it by executing terraform destroycommand. We use cookies to ensure that we give you the best experience on our website. "AMI Name: Windows". Founder (shanky), Automateinfra.com 2021-2022 MOST TRENDING BLOG, Terraform files and Terraform directory structure, Launch multiple EC2 instances using Terraform count, Launch multiple EC2 instances using Terraform for_each, How to Install Terraform on an Ubuntumachine. We also saw how the instance can be deleted.Advertisement.banner-1{text-align:center;padding-top:20px!important;padding-bottom:20px!important;padding-left:0!important;padding-right:0!important;background-color:#eee!important;outline:1px solid #dfdfdf;min-height:335px!important}if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'howtoforge_com-banner-1','ezslot_5',111,'0','0'])};__ez_fad_position('div-gpt-ad-howtoforge_com-banner-1-0');.banner-1{text-align:center;padding-top:20px!important;padding-bottom:20px!important;padding-left:0!important;padding-right:0!important;background-color:#eee!important;outline:1px solid #dfdfdf;min-height:335px!important}if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'howtoforge_com-banner-1','ezslot_6',111,'0','1'])};__ez_fad_position('div-gpt-ad-howtoforge_com-banner-1-0_1');.banner-1-multi-111{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. Deploy 1 EC2 Instance (Amazon Linux 2) into a new VPC. If successful, you should see the following: We are connected to the MySQL RDS database. Replace the and with the Access Key ID and the Secret Access key values that you obtained from the step above, 9. When prompted, enter the password of the DB user. 10. Next, enter the value returned from the instance_public_ip in your browser with :8080 appended to the end. In an overview, This is what we are doing in this configuration file. To create one, go to your AWS console, select EC2 from Services drop-down, click on Key pairs, then click on Create key pair button. When you create an EC2 instance and you know you will be doing SSH into your instance using an SSH client. In this article, we are going to learn how to use Terraform to create AWS EC2 instance and create a Terraform AWS infrastructure. Do you think you can do it correctly without any mistakes? Run a Terraform Plan This allows us to check the resources to be created, 19. We are now ready to move forward to the practical application of Terraform and we are going to create an EC2 instance with terraform. Using Terraform has many advantages over creating an EC2 instance in the AWS Console: There is an obvious barrier to entry when using terraform, in that you need to understand the programming language in order to start using it. I will not be covering Jenkins in-depth in this article. In this article, we will see how to create an EC2 Instance using Terraform. you will see instance is created in AWS. Welcome Back, everyone! In this guide, we going to launch an EC2 Instance (Ubuntu Server 20.04 LTS) on AWS with Terraform. Git 5. As you can see, you can use aws_instance resource to create an EC2 instance. Amazon Elastic Compute Cloud (Amazon EC2) provides the scalable capacity in the Amazon Web Services (AWS) Cloud. There are two ways to Provisioning EC2 key pairs with terraform Use Existing Key Create New Key Use Existing Key You can create one key using AWS console and use the existing one which is already present as shown below Now in your terraform code, you have to just use this key name in your configuration like this resource "aws_instance" "bastion" { Here are the steps to initialize a working directory: Step 1. Follow DevopsJunction onFacebook orTwitter This may be the only time you hear me say this, but I love cleaning up behind myself (in Terraform)! We Hope you are fine with it. Terraform configuration is written in a specific language namedHashicorp Configuration Languageand it can optionally be written in JSONas well. Terraform supports a number of cloud infrastructure providers such as Amazon Web Services, IBM Cloud (formerly Bluemix), Google Cloud Platform, Linode, Microsoft Azure, Oracle Cloud Infrastructure, or VMware vSphere as well as OpenStack. Select the region where instances will be created (as Key Pais are unique to each region), Go to EC2 AWS web console. Use the following command to create a directory and change our present working directory to it. Easy and happy Learning! Make note of database_endpoint and database_port, we will need those once we are inside the EC2 instance. To destroy the resources without confirmation use below command. Amazon EC2 stores the public key on our instance, and we store the private key. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Before you use terraform to provision your resource, you need to tell it which cloud provider you will be working with. Create a file called ssh.tfThis will create your ssh key pair in AWS and downloads the private key locally and set permissions on the file, 12. While everything has its pros and cons. This command downloads and installs plugins for providers used within the configuration. On the other hand, Jenkins is an open-source automation server that can serve as a simple continuous integration tool or a continuous delivery hub for your software projects. Hope this article helps you understand, How Terraform AWS or Terraform EC2 instance creation works in real-time. Add extension step of Terraform, perform once when you install the VS code editor. How to Install Apache tomcat using Ansible. Docker 2. This main.tf will read values of variables from variables.tf and terraform.tfvars. In order to do this, The Simplest way is to download and setup AWS CLI, You can refer to this document how to setup AWS CLI. The second command to be used is 'terraform plan'. Step 2 Create a Key-pair for the server. Setup Programmatic Access Login to AWS Console, In the services, go to IAM and perform the following steps Step1: Add new user and key in the UserName Click to view the image Step2: Attach Existing Policies and Select Admin Click to view the image Fill out the vars.tfvars with your desired key_pair_name. Once variables.tf file is created, We need to change values assigned to variable. As we have crossed all the sections of basic and prerequisites. However, its far from the ideal scenario. What is the use of Node Pool snapshot in AKS ?. Create a main.tf, providers.tf, variables.tf, and outputs.tf to manage your Terraform deployment. So lets create all the Terraform configuration files required to create multiple AWS EC2 instances on the AWS account. Terraform is an open-sourceinfrastructure as codesoftware tool created by HashiCorp. Well, you are 100% right. Run, After verification, now its time to actually deploy the code using, Open your favorite web browser and navigate to the, While in the Console, click on the search bar at the top, search for EC2, and click on theEC2menu item and you should see. Search for AWS IAM 3. After the DB subnet group has been created, we can now create the database. terraform destroy. What I love most about Terraform is that we only have to worry about defining WHAT we want to deploy and not HOW it should be deployed. EC2 Dashboard Step 11: You will see the Connect option on top. The terraform.tfstate file is used by Terraform to map real-world resources to your configuration, keep track of metadata, and improve performance for large infrastructures. If you havent noticed, this Terraform code creates an SSH key in your current working directory that we can use to SSH into your EC2 instance! Run a Terraform Destroy Destroy the resources, If you are happy, with the resources to be create, type yes. Let us call it a Terraform AWS example. If You need a quick and efficient way to automate infrastructure in AWS, you can use Terraform.. Terraform, An outstanding and innovative product from hashicorp and it is a leader in Infrastructure as Code tools Segment. Step 2) Search for EC2 in your AWS console and open it. The output variables would be saved locally and can be viewed anytime in the future with. ssh-keygen is the command that will generate an SSH key for you. Creating multiple AWS EC2 instances is generally the need of the project or the organization when you are asked to create dozens of AWS EC2 machines in a particular AWS account, and using AWS console will take hours to do that why not automate it using Terraform and save your hours of hard work? 3. When it is finished, you should see a success message. We will verify S3 access and the Jenkins installation with the upcoming steps. AWS access key id and secret access key generated 3. What happens under the hood when Node.js works on tasks such as database queries? In case if you are using the Environment variables method. AWS account and associated credentials that allow you to create resources. This article is going to all about Terraform AWS Example and how to Create EC2 instance with Terraform. You'll need to write out each argument you want to set with an expression which tells Terraform how you'd like to set it. Your .gitignore file should have the following contents, 21. It is done with the help of Programmatic API Keys (Access Key and Secret.). You can remove the profile line alone and that should be it. Write for Us Cloud Computing | AWS | Cyber Security | DevOps | IoT, Ways in Which You can Create and Manage AWS Resources, How to Setup AWS Free Tier Account in Right Way, Getting Started With Terraform on AWS In Right Way, How to Create Key Pair in AWS using Terraform in Right Way, Send SNS Notification from AWS Lambda using Python Boto3, Subscribe an SQS Queue to an SNS Topic using CloudFormation, How to Create IAM Role in AWS using Terraform, We saw how to create an EC2 key pair using terraform, Created an EC2 instance using the created key pair, We also saw how to use an existing key pair while creating an EC2 instance. It takes hours of productivity and creates a huge delay for the server setup or provisioning. Docker Hub 3. For every type of provider, there are many different kinds ofresources that you can create, such as databases, security groups, instances, VPC and load balancers, etc. Choose Instances , Select Launch Instance , Here you will find the lists of Operating systems. Set the user details and access typeSelect Programmatic access 4. Once unsuspended, kcdchennai will be able to comment and publish posts again. In the previous post on creating EC2 key pair using terraform, I covered extensively how you can create a key pair. Terraform deploying resources in AWS. Adding a comment below on what you liked and what can be improved. In such cases, we can use EC2 user_data feature and define a set of commands or scripts that needs to be executed during the server initialization. Run the following command in the MySQL terminal. Next initialize the Terraform using terraform init command followed by terraform plan and finally terraform apply to deploy the changes. Run the following command: Once that MySQL client is installed, lets try connecting to the RDS instance. Follow me for more content like this!! For Windows instances, the private key allows us to obtain the administrator password and then log in the EC2 Instance using RDP. It helps with most of the autocompletes. You can verify the outputs shown and what resources are going to be created or destroyed. It is not recommended. An AWS Security Group determines the traffic that can flow in and out of your network. join us on our Facebook group, and follow us on Facebook, Twitter, LinkedIn, and Instagram. Make sure that you have the private key of the key pair you are specifying handy with you. Here is what you can do to flag kcdchennai: kcdchennai consistently posts content that violates DEV Community's A CSV file containing your credentials will be generated Download and open the CSV file on your computer to extract the Access Key ID and Secret Access Key Run the following command on your terminal / shell: By using the Terraform tool you could create a VPC, subnets, security-group, internet-gateway and EC2 instance in AWS. For example, You want to launch Ubuntu 18.04, You can find the AMI ID of Operating system, You should use this AMI ID in your terraform file to launch an EC2 Instance with Ubuntu 18.04 Launching an EC2 instance using Custom AMI: For Linux instances, the private key allows us to securely SSH into our instance. This file allows Terraform to interact with AWS cloud using AWS API. This terraform-for_each-demo folder will contain all the configuration files that Terraform needs. terraform-aws-ec2-instance Terraform Module for provisioning a general purpose EC2 host. In our case it is AWS. Install and configure AWS CLI Tool: How to Install and Use AWS CLI on Linux Don't forget to configure AWS Access Key ID and Secret Access Key as shown on the installation guide. You should receive an access denied message confirming that Public Access to the bucket isnt possible. The requisites of this . A better way is using Terraform to . In this article, we will see how to create an EC2 Instance using Terraform. Read this book and I highly recommend it. Copy/Write the file to the S3 bucket URI. To create the EC2 Instance, run the command terraform apply.. `resource "aws_instance" "terraform_Demo_EC2_Instance" { ami = "$ {var.ami_id}" count = "$ {var.number_of_instances}" instance_type = "$ {var . In this post, youll learn how to create EC2 instance using terraform with key pair on AWS. Create 'variables.tf' which contains the declaration and definitionof the variables. Version This specifies which subset of available provider versions the module is compatible with. The first thing we need to do is create the DB subnet group. Though terraform accepts the Access Key and Secret Key hardcoded with in the configuration file. KCD Chennai 2022: A CNCF Virtual conference about Kubernetes, Cloud-native, Cloud, DevOps and Open-source I have specified the minimum set of parameters to create an instance above. , In this step, we will create our Terraform configuration files: main.tf, providers.tf, variables.tf, and outputs.tf. How to use Terraform to create a Virtual Private Cloud (VPC) and an EC2 instance in AWS First, create a new Terraform configuration file and specify the AWS provider: provider Configuration:Configuration consists of one or more arguments that are specific to the resource. Before proceeding, I assume that you are familiar with the basics of Terraform and AWS EC2 Instance. This section talks about how to create EC2 key pair using terraform. First of all, you might be thinking what is a key pair? We have kept the declaration of these 2 variables in'terraform.tfvars' file.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'howtoforge_com-medrectangle-4','ezslot_1',108,'0','0'])};__ez_fad_position('div-gpt-ad-howtoforge_com-medrectangle-4-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'howtoforge_com-medrectangle-4','ezslot_2',108,'0','1'])};__ez_fad_position('div-gpt-ad-howtoforge_com-medrectangle-4-0_1');.medrectangle-4-multi-108{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. How to create AWS Keypair using Terraform and attach to EC2 instance | Key to SSH in EC2 server Cloud Champ 4.29K subscribers Subscribe 8.6K views 9 months ago Create AWS Keypair. You have been tasked with setting up the VPC, EC2, and RDS instances using Terraform. The resource name and VPC are set to variables created in the next step. Terraform is a great open-source tool that provides the easiest code and configuration files to work with. We can create the AWS Key Pair using the AWS Console, AWS CLI, or PowerShell. You will be prompted to confirm that you want to perform these actions. You will notice that the apply command shows your plan output and asks you to Do you want to perform these actions?.Write yes and hit Enter to deploy the EC2 Instance. We are using the -t option to specify the algorithm that we want it to use. Once you have created the files above and added the Terraform configuration, you should have the following files in your directory. You need to save it right so that you can use it in terraform. Now your files and code are ready for execution. After successfully running the terraform init command, Run the terraform plancommand. In order to connect to AWS. What about S3 write access from our EC2 instance? I will sum it up for reference here. We have kept the declaration of these 2 variables in. Run a Terraform Apply Create the resources, If you are happy, with the resources to will be created, type yes. You may incur a small charge for creating an EC2 instance on Amazon Managed Web Service. If terraform planis a trial run and test. The input file for terraform is known as Terraform Configuration. Are you sure you want to hide this comment? Select your EC2 instance and click on it to go to the instance details screen. This will allow the team to utilize the tool in multiple environments and better track any changes made to the environment. ssh -i .pem @, ssh -i "my-terraform-created-key-pair.pem" ubuntu@ec2-35-88-44-69.us-west-2.compute.amazonaws.com, tls_private_key.key: Refreshing state [id=a3a1f837dacea7d6e2f5d928233270603ed45ede], local_sensitive_file.private_key: Destroying [id=9d4504e86d9a84921d1256cd8a51bd3f27af9bbf], https://medium.com/@roadtocloude/list/create-ec2-instances-with-infrastructure-as-code-iac-c4ca1b5067fe, https://github.com/RukayaOK/aws-ec2-creation-iac/tree/main/terraform, https://aws.amazon.com/resources/create-account/, https://developer.hashicorp.com/terraform/downloads, https://registry.terraform.io/providers/hashicorp/aws/4.45.0, https://registry.terraform.io/providers/hashicorp/tls/latest/docs, https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.RegionsAndAvailabilityZones.html, https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/connection-prereqs.html, The AWS terraform provider allows you to create AWS resources via Terraform, The TLS provider that allow you to create TLS keys and certificates via Terraform, The Local provider which allows you create files on your local host with Terraform.

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how to create ec2 instance in aws using terraform