how to create ec2 instance in aws using terraform how to create ec2 instance in aws using terraform

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. Create a main.tf, providers.tf, variables.tf, and outputs.tf to manage your Terraform deployment. 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. Create Security group which allow port 80 (HTTP), 22 (SSH), 2049 (EFS) and egress rule to all traffic and a key. In the next post we learn how to use Pulumi to create an EC2 instance. As we have crossed all the sections of basic and prerequisites. Now your files and code are ready for execution. Next, enter the value returned from the instance_public_ip in your browser with :8080 appended to the end. 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. We are ready with the boilerplate code. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); The Most Trending, Quality DevOps Cloud articles, Automation guides, series, News, Podcasts, and videos. You may incur a small charge for creating an EC2 instance on Amazon Managed Web Service. Thanks to HashiCorp Imagine that you need to create an AWS EC2 instance for your company or for learning purpose with your AWS free tier account. Time to create the security groups! The consent submitted will only be used for data processing originating from this website. AWS EC2 Instance Creation Using Terraform, Terraform installation (Once Terraform is installed, we will configure aws IAM credentials in order to use with AWS), Code editor (I am usingvisual studio editor. Dont worry!. I have specified the minimum set of parameters to create an instance above. We also saw how the instance can be deleted. You have been tasked with setting up the VPC, EC2, and RDS instances using Terraform. Terraform deploying resources in AWS. AWS generates a PEM file that you should store in a safe place. List out all EBS Volumes Attach existing EBS Volume to an EC2 Instance Create a EBS Volume and attach to an EC2 Instance To implement above tasks I have create a IAM user called. Tools like Terraform helps you create an infrastructure in an automated way that can be repeated you create the same infrastructure as many time as you want. The output variables would be saved locally and can be viewed anytime in the future with. we might want to run some custom startup shell scripts and do some installations etc. You need to save it right so that you can use it in terraform. Welcome Back, everyone! Static stuff can be provided by adding an access_key and secret_key in-line in the AWS provider block. What is Infrastructure as Code Terraform, What tools are used in Infrastructure as Code, Terraform Configuration file A Quick intro, Create EC2 instance with Terraform Terraform EC2, How to Create EC2 instance with user_data Custom Startup Script, How to Create Multiple EC2 instances with different Configuration, please do take a look by following this link, Ansible EC2 Example - Create EC2 instance with Ansible, AWS EC2 CLI List Examples - Describe instances | Devops Junction, Add SSH Key to EC2 instances with Ansible - Automated, Packer Build - Create and Build Packer Templates and Images for AWS, providers the provider name aws, google, azure etc, resources a specific resource with in the provide such as aws_instance for aws, output to declare output variables which would be retained the Terraform state file, local to assign value to an expression, these are local temporary variables work with in a module, data To Collect data from the remote provider and save it as a data source, Create a Directory and Download the following file and save it as, If you are happy with the changes it is claiming to make, then execute, A Variable block where we define all the resource names that we are going to be using within the Terraform configuration, The second block is to tell Terraform to choose the right provider, in our case it is, Creating an EC2 instance, The instance type would be picked up from the, Once the EC2 instance created, we would get the public IP of the instance. Otherwise, there are other ways to connect your system and its absolutely okay for you to skip adding a key pair to your instance. Besides that, you should also monitor this line every time you run this command to make sure that no unintended result happen. Bootstrap the EC2 instance with a script that will install and start Jenkins. . 16. 3. Launch a cryptominer in order to make money or provide a distraction. . Configuration: Configuration consists of one or more arguments that are specific to the resource. For Windows instances, the private key allows us to obtain the administrator password and then log in the EC2 Instance using RDP. You can create an SSH key and use the public key part to create a key pair on AWS as shown below. Enter yes. Posted on May 15, 2022 When expanded it provides a list of search options that will switch the search inputs to match the current selection. Terraform modules are on the top level in the hierarchy where configuration files reside. Technical Architect | DevOps Engineer | Meetup Organiser, export AWS_ACCESS_KEY_ID="". The AWS CLI installed. When it is finished, you should see a success message. After successfully installing the terraform, we will create an EC2 instance using Terraform, and we will use the VS code editor to write the script. Whenever we want this IP, we can come to this directory and execute terraform outputto get it. 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. This file allows Terraform to interact with AWS cloud using AWS API. Manage Settings Lets learn how to use Terraform count meta argument. Create 'terraform.tfvars' which contains the definition of access_key and secret_key variables defined in the above file. Once done, you can create an EC2 instance using the key pair. So far we have seen all the basics of Terraform and how to create our first EC2 instance with Terraform. So let us go and do some farming in the AWS planet. How do we know Jenkins is installed? For creating the EC2 instance, we need ami and instance type. Your .gitignore file should have the following contents, 21. You should have received a successful upload message and confirmed write access to the S3 bucket. On the Select trusted entity page, choose AWS service, and then select the EC2 use case. 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. It leverages a provider platform API to create and manage resources for the respective platform (e.g., AWS, Azure, GCP, Kubernetes, etc.). In this project write-up, I will cover deploying an EC2 into a new VPC with Jenkins installed using Terraform. Some Sample usage of these API Keys in a terraform configuration. Enter a Name for your key, select pem for openSSH or ppk for Putty and then click on Create key pair. The following file presumes that you are using the AWS Config profile. Made with love and Ruby on Rails. Follow me for more content like this!! You can also subscribe to our newsletter below to not miss any updates from us. This also outputs the public DNS name of the instance (as per step 16). The following keys need to be changed with the keys of your IAM user. This will install the latest module and provider versions. Resources are also tracked in the state file which stops us from creating duplicate resources via terraform. Terraform commands terraform init terraform plan terraform apply All executed successfully. (Click, to learn to create an IAM user with 'access_key' & 'secret_key' on AWS, ). 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. Terraform is a Single file binary which you can download and run it without any additional installation. 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 terraform apply is real-time and production. As you have downloaded the API Access and Secret keys. We empower and invest in diverse technology talent to increase representation for all people, and to create higher performing enterprise organizations. For example, Lets suppose You want to create an infrastructure of LAMP (Linux Apache MySql PHP) along with some other Linux tools like nc, curl, Openssletc, The traditional approach is to build the Virtual machine and install these tools one after another. Sometimes while doing a modification to the existing resources, Terraform would have to destroy the resource first and recreate it. As you can see, well be working with the AWS provider. This main.tf will read values of variables from variables.tf and terraform.tfvars. Launch EC2 instance. Resource ssm_command from 'pbobov/ssm' provider can be used to run SSM commands by Terraform. you will see instance is created in AWS. The AWS provider needs to be configured with the proper credentials before it can be used. You can literally get started with EC2 in minutes using AWS Management Console. In real time, we might need more than just creating a single instance. Step4: Go ahead and Apply it with Terraform apply, EC2 instances with different Configuration. The EC2 Instance is defined using the aws_instance resource . Easy and happy Learning! Continue with Recommended Cookies. Make note of database_endpoint and database_port, we will need those once we are inside the EC2 instance. Lets go ahead and create some outputs. This terraform-for_each-demo folder will contain all the configuration files that Terraform needs. it helps us set up even a complicated infrastructure in a short span of time. 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. You should have successfully reached the Jenkins Getting Started page that is displayed on every new Jenkins installation. If those are your exact thoughts, dont worry. This main.tf will read values of variables from variables.tf and terraform.tfvars. In our case, we are outputting the public dns name of the instance. Here's an example of how to delete the AWS EC2 instance created in the previous example: terraform destroy. In the previous example, you created more than four AWS instances, but all the instances contain the same attributes such as instance_type, ami, etc. But before we create the EC2 instance, lets create a data object that will hold the most recent versions of Ubuntu 20.04. In this article, I will walk you through the steps on how we can easily leverage Terraform to provision an EC2 instance on AWS running with Redhat and install Jenkins using remote commands. Create and assign a Security Group to the Jenkins Server that allows traffic on port 22 from your Public IP and allows traffic from port 8080. We use cookies to ensure that we give you the best experience on our website. If you are using VS Code, install the terraform extension. This is the first command that should be run after writing a new Terraform configuration. Resource actions are indicated with the following symbols: Plan: 4 to add, 0 to change, 0 to destroy. Assuming you are still logged into the Ubuntu machine using your favorite SSH client. We are using the -t option to specify the algorithm that we want it to use. This command is used to initialize a working directory containing the terraform configuration files. I will also demonstrate how to create a private S3 bucket for our Jenkins artifacts and allow access from our EC2 using an Instance Profile. You should always look for the + and -signs on the terraform planoutput. Once you have replaced all variables and you are ready to create an instance-. But its not recommended at all as your private key will lie in your state file unencrypted. Auditing resources creation, deletion and updates are tracked in code so we have an audit of changes made. Run the following command: Now we will need to take this key and make it an AWS key pair. To avoid any unnecessary charges in AWS, lets use terraform to destroy everything that we have created. Linux (Ubuntu) 6. terraform plan command is used to see the changes that will take place on the infrastructure. Thats where IaC tools come into the picture. 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. Woohoo! copy the public address , select key pair name , open the SSH port (22) in security group if not enabled. In this article, we saw the steps to create an EC2 instance in the region of our choice. When we created our EC2 instance we did not specify a Security Group so our instance will use the default Security Group for the region. Go to Network & Security and Key Pairs. 7. You can use an editor of your choice and copy-paste the following configurations to create variables.tf, terraform.tfvars, and main.tf Create 'main.tf', which is responsible for creating VPC on to AWS with the dependent resources. Subscribe to our newsletter below to get awesome AWS learning materials delivered straight to your inbox. To address the same I have written an article to cover how to create multiple Ec2 instances with different instance types and configuration, Terraform Create Multiple EC2 with different Configs for_each and count together. The second command to be used is 'terraform plan'. Copy/Write the file to the S3 bucket URI. 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. Alright, now that our main config file and outputs are finished, lets run our configuration and make sure everything works correctly. We are saving it as an output variable. Create an EC2using the Terraform configuration files. The terraform show command will output the current infrastructure state. Create main.tf which is responsible to create an EC2 on AWS. Create 'main.tf' which is responsible to create an EC2 on to AWS. Now that you have Terraform installed. Developers can create an Amazon EC2 instance to test software in a development or staging environment, or to deploy software to production. Some of them are listed below. Since this is a test instance, I want to destroy the resources I have created and I can do it by executing terraform destroycommand. 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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? Create variables.tf which contains the declaration and definition of the variables. In this guide, we going to launch an EC2 Instance (Ubuntu Server 20.04 LTS) on AWS with Terraform. . AWS account and associated credentials that allow you to create resources. Terraform used the selected providers to generate the following execution plan. Once complete, all of your resources should be removed. In this post, you learnt how to create EC2 instance using Terraform with key pair on AWS. Lets now dive into Terraform files and Terraform directory structure that will help you write the Terraform configuration files later in this tutorial. In our case it is AWS. Use the following command to create a directory and change your present working directory to it. Create a file called variables.tf This will contain the name, description, type and default values of all your input variables. You can see that public IP and elastic IP is shown as same as you would expect. Visit the AWS console. Once unsuspended, kcdchennai will be able to comment and publish posts again. What about S3 write access from our EC2 instance? Terraform is an infrastructure as a code (Iac) tool that allows you to create, change, and keep infrastructure compliance. Providers are easily downloaded and installed with a few lines of HCL and a single command. Login to the AWS Console 2. We can go to the AWS EC2 console to verify if the EC2 instance is created or not. There are ample amount of BLOCK_TYPEavailable in Terraform and the resourceis primary and all others are to support building that specified resource. Now Let me proceed further with an assumption that you have installed the Terraform CLI. Before proceeding, I assume that you are familiar with the basics of Terraform and AWS EC2 Instance. EC2 Dashboard Step 11: You will see the Connect option on top. For Linux instances, the private key allows us to securely SSH into our instance. . We are going to be creating a public and a private route table. We can use this value to connect to our instance at a later point, 18. You can get the AMI Id from the console. Create a folder called terraform-example where the HCL files will live, then change directories to that folder. We have kept the declaration of these 2 variables in. How to Create EC2 Instance using Terraform with Key Pair on AWS, In my previous articles, you have seen how to launch an EC2 instance in AWS using different ways. Deploy 1 EC2 Instance (Amazon Linux 2) into a new VPC. Run the following command: Once that MySQL client is installed, lets try connecting to the RDS instance. The instructions are at the "Amazon EC2 key pairs and Windows instances" official documentation. It will become hidden in your post, but will still be visible via the comment's permalink. If You need a quick and efficient way to automate infrastructure in AWS, you can use Terraform.. Git 5. Required fields are marked *.