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. In this article, we will see how to create an EC2 Instance using Terraform. Subscribe to our newsletter to get notified each time we post new content. It tells the Terraform that you will be using AWS as your provider and that you want to deploy your setup into the region us-west-2. In real-time use cases you would not be created just once EC2 instance but many at once. We have various articles on Terraform that covers basic to advanced topics of Terraform. Terraform has to successfully authenticate. Hope this article helps you understand, How Terraform AWS or Terraform EC2 instance creation works in real-time. Search for AWS IAM 3. In this article, we saw the steps to create an EC2 instance in the region of our choice. (LogOut/ This Series: https://medium.com/@roadtocloude/list/create-ec2-instances-with-infrastructure-as-code-iac-c4ca1b5067fe, Git Repository: https://github.com/RukayaOK/aws-ec2-creation-iac/tree/main/terraform, 4. If you in the learning path. The first command to be used is 'terraform init'. Click anywhere on the image to buy it on amazon. First, lets start with running terraform show. So now, we should go and create these access and secret keys for your AWS account. You provide a keypair so that you can use it later to connect to your instance. Also, we have specified the region in which we would like terraform to create my resources. 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? Unflagging kcdchennai will restore default visibility to their posts. Replace the and with the Access Key ID and the Secret Access key values that you obtained from the step above, 9. You can see all the other attributes you can specify in the official documentation. Your .gitignore file should have the following contents, 21. If you enjoyed this article then please share to your friends and if you have suggestions or thoughts to share with me then please write in the comment box. 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 Below piece of code is creating the ec2 instance but in AWS ec2 portal, the name is coming as empty. This main.tf will read values of variables from variables.tf and terraform.tfvars. For more practical videos and tutorials. Also, AWS EC2 instances are safe as initially, they grant access to them using SSH keys. The second command to be used is 'terraform plan'. Terraform providers will need to be defined and installed to use certain types of resources. We can create the AWS Key Pair using the AWS Console, AWS CLI, or PowerShell. This tutorial will use only the AWS provider. Enter yes to approve destroying all resources. The input file for terraform is known as Terraform Configuration. 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. Set the user details and access typeSelect Programmatic access 4. To connect to our instance, we need to ensure that this default Security Group allows traffic into the created instance from our IP address. 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 Posted on May 15, 2022 Now its time to clean up our resources. We and our partners use cookies to Store and/or access information on a device. Now its time to begin setting up our AWS environment. 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. This section talks about how to create EC2 key pair using terraform. This command downloads and installs plugins for providers used within the configuration. Terraform configuration files for creating an AWS EC2 Instance Create a dedicated directory where we can create terraform configuration files. Terraform modules are on the top level in the hierarchy where configuration files reside. Once all the pre-requisite software are installed, proceed to the next sections. In this project write-up, I will cover deploying an EC2 into a new VPC with Jenkins installed using Terraform. Enter a Name for your key, select pem for openSSH or ppk for Putty and then click on Create key pair. But before we create the EC2 instance, lets create a data object that will hold the most recent versions of Ubuntu 20.04. Provider:Terraform relies on plugins called providers to interact with remote systems. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); The Most Trending, Quality DevOps Cloud articles, Automation guides, series, News, Podcasts, and videos. Make note of database_endpoint and database_port, we will need those once we are inside the EC2 instance. As well be working with AWS, here is our provider declaration section and authentication section-. DEV Community 2016 - 2023. As you have downloaded the API Access and Secret keys. You can verify the outputs shown and what resources are going to be created or destroyed. If terraform planis a trial run and test. You can also subscribe to our newsletter below to not miss any updates from us. Go to Network & Security and Key Pairs. AWS EC2 Instance Lab Technologies Planning to Use : 1. 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. 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. please do take a look by following this link, If you would like to give a chance to Terraform and want to learn all the bits and pieces of it. Self-taught Engineer with an interest in Software/DevOps Engineering, mkdir terraform-tutorial && cd terraform-tutorial, ssh-keygen -t rsa -b 4096 -m pem -f tutorial_kp && openssl rsa -in tutorial_kp -outform pem && chmod 400 tutorial_kp.pem, terraform apply -var-file="secrets.tfvars". EC2 instances are virtual machines running on AWS, and a common component of many infrastructure projects. Dont worry!. Scenario: Your team has been working on a web application that uses a database. Once you have read the post, you are ready to move ahead with this post further. But it is important to manually verify all the four AWS instances launched in AWS. `resource "aws_instance" "terraform_Demo_EC2_Instance" { ami = "$ {var.ami_id}" count = "$ {var.number_of_instances}" instance_type = "$ {var . When we execute the above command, we can see that 1 new resource has been added and 0 has been destroyed in the output. Launch EC2 instance. Whenever we want this IP, we can come to this directory and execute terraform outputto get it. We are going to be creating a public and a private route table. Time to create the subnets. On the Add permissions page, select the policies that grants your instances access to the resources that they need. Version This specifies which subset of available provider versions the module is compatible with. The one mentioned over here is a dummy one. Create a new directory for your Terraform files. Login to AWS Management Console and navigate to the EC2 dashboard. Are you sure you want to hide this comment? "AMI Name: Windows". What happens under the hood when Node.js works on tasks such as database queries? Create main.tf which is responsible to create an EC2 on AWS. GitHub 4. I am using "vim" as an editor to write in files, you can use an editor of your choice and copy paste the following configurations to create variables.tf, terraform.tfvars and main.tf. This will install the latest module and provider versions. It leverages a provider platform API to create and manage resources for the respective platform (e.g., AWS, Azure, GCP, Kubernetes, etc.). (LogOut/ You should have received a successful upload message and confirmed write access to the S3 bucket. Create terraform.tfvars which contains the definition of access_key and secret_key variables defined in the above file. This also outputs the public DNS name of the instance (as per step 16). However, its far from the ideal scenario. Amazon EC2 stores the public key on our instance, and we store the private key. Provide the provider information (we are using AWS). (LogOut/ 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. Once we have the final configuration file, create a terraform file main.tf and paste the content of it. We can go to the AWS EC2 console to verify if the EC2 instance is created or not. Once the Initialization completed. Get your subscription here. You will be prompted to confirm that you want to perform these actions. 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. We need something powerful to help us create instances/Infra in a single click. Now that the VPC resource has been created, its time to create the Internet Gateway and attach it to the VPC. What parameter should I add for populating the NAME field. 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. Step#5: Now open the terminal of VS code editor or command prompt (cmd). There are so many tools in the market helps you to achieve the IaC. For Linux instances, the private key allows us to securely SSH into our instance. -b option says the size of the key. 7. Enter your email address to subscribe to this blog and receive notifications of new posts by email. You can use Amazon EC2 to launch as many or as few virtual servers as you need, configure security and networking, and manage storage. Thanks to IaC.!! Using ChatGPT to Create AWS Cloudformation & Terraform Templates Flavius Dinu Terraform from 0 to hero 7. Hope this article is helpful, If you have any feedback or issues please let me know on the comments section. An AWS Security Group determines the traffic that can flow in and out of your network. Visit the AWS console. While the world is moving towards containers and desired state and auto-scale. The second command to be used is 'terraform plan'. terraform apply command will create the resources on the AWS mentioned in the main.tf file. You should always look for the + and -signs on the terraform planoutput. Benefit of that project: You save time by automating the creation of your infrastructure using Terraform You can reuse that code in different cloud providers such as GCP, AWS, Azure, Oracle, etc.. and create an infrastructure . Terraform configuration file would ideally have lot of elements known as blocks such as provider, resourceetcetera. As you can see, you can use aws_instance resource to create an EC2 instance. An EC2 instance is a virtual machine that runs in the AWS cloud. Here is what the final configuration file looks like. Docker Hub 3. Create another file terraform.vars file in the /opt/terraform-for_each-demo directory and copy/paste the content below. Create a dedicated directory where we can create terraform configuration files. This terraform-for_each-demo folder will contain all the configuration files that Terraform needs. 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. Your email address will not be published. Create an outputs.tf file This will output values after the creation of your resources. we need to use this file as an input while running the applycommand, From the preceding output, you can see the instance creation took only 31 seconds and it completed and gave us the public ipas an output. Simply runterraform destroyand it will delete all that you created usingmain.tf. As we can see from our returned output, Terraform will create 13 resources in AWS. Once you run terraform apply, your key pair and EC2 instance get created. In the navigation pane, choose Roles then choose Create role. So which argument do you plan to use in your next Terraform deployment? In this article, we will see how to create an EC2 Instance using Terraform. I have given some explanation before each block on the configuration to explain the purpose of the block. Read: Ways in Which You can Create and Manage AWS Resources. Terraform deploying resources in AWS. If you are using VS Code, install the terraform extension. Welcome Back, everyone! Step 3: Create the user data file User data is a feature that allows customization of AWS EC2 (virtual machine) when it is provisioned and (if desired) with each restart. (i) Login to the AWS Console < Search for EC2 < Select Security Groups, (ii) Select the Security Group with the name default, (iv) Add a rule to Allow SSH from My IP < Select Save rules, 22. Open your AWS Console and go to the EC2 dashboard. If you don't have access to AWS, create one free tier account. mkdir terraform_ec2instance cd terraform_ec2instance/ Launch a cryptominer in order to make money or provide a distraction. With AWS EC2, you dont need to worry about the hardware and time to develop and deploy applications on the machines. Create a folder for your Terraform Project and export the Terraform environment variables. you will see instance is created in AWS. Git 5. The requisites of this . . Here's an example of how to delete the AWS EC2 instance created in the previous example: terraform destroy. But its not recommended at all as your private key will lie in your state file unencrypted. We are going to be working in the main.tf file for the majority of this tutorial. Allow Necessary Cookies & Continue Create an S3 bucket for your Jenkins Artifacts that is not open to the public. Step4: Go ahead and Apply it with Terraform apply, EC2 instances with different Configuration. A key pair is a security credential that you use while connecting to your EC2 instance. Thanks for keeping DEV Community safe. . For Windows instances, the private key allows us to obtain the administrator password and then log in the EC2 Instance using RDP. . How do you do, Login to AWS Console, In the services, go to IAM and perform the following steps, Step1: Creating a Configuration file for Terraform AWS, The Terraform AWS Example configuration file, Step3: Pre-Validate the change A pilot run, # aws_instance.project-iac will be created, # aws_security_group.project-iac-sg will be created. This command is used to apply the changes required to reach the desired state of the configuration or the pre-determined set of actions generated by a terraform plan execution plan. 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. In the commands above, an AWS instance is created with unlimited CPU usage. It takes hours of productivity and creates a huge delay for the server setup or provisioning. Which are ami and instance_type. For creating the EC2 instance, we need ami and instance type. If you have any questions, please leave a comment. Open VS code editor and add the Terraform (HashiCorp) extension. Now that the subnets have been created, we can go ahead and create the route tables. If you are a beginner I highly recommend you to read my previous post onGetting Started With Terraform on AWS In Right Way. /* This Terraform deployment creates the following resources: resource "aws_internet_gateway" "internet_gateway" {, resource "aws_default_route_table" "default_route" {, resource "aws_iam_instance_profile" "ec2_instance_profile" {, resource "aws_iam_role_policy" "ec2_role_policy" {, # Create EC2 Security Group and Security Rules, resource "aws_security_group" "jenkins_security_group" {, resource "local_file" "private_key_pem" {, ssh -i ec2-user@, https://pkg.jenkins.io/redhat-stable/jenkins.repo, https://pkg.jenkins.io/redhat-stable/jenkins.io.key, https://www.linkedin.com/in/brine-ndam-ketum-6ab435231. Here is what you can do to flag kcdchennai: kcdchennai consistently posts content that violates DEV Community's You have a new hire in your team, Infrastructure as Code is a Brilliant Concept in DevOps and Packer and Terraform are two major technologies/products in this segment. Repeatability we create our instance in code so its easy to repeat this creation process again and again. Now, you should have 3 files, viz, variables.tf, terraform.tfvars and main.tf Create an EC2 Instance using the Terraform configuration files Before you execute the following commands make sure you have configured the valid access_key and secret_key. If the EC2 instance is SSM managed, you can use AWS Systems Manager Run Command to execute command on the instance. Install Terraform- https://developer.hashicorp.com/terraform/downloads Implementation 1. It will be prompted to provide our input to create the resources. All of these can manage IaC and work with different cloud providers except Cloud Formation as it was limited only to AWS. Write Terraform configuration files for creating an EC2 Instance. Configuration:Configuration consists of one or more arguments that are specific to the resource. If those are your exact thoughts, dont worry. Through this tutorial, you learned how to use Terraform to configure AWS VPC, EC2, and RDS instances. you can use any editor). Open the IAM console at https://console.aws.amazon.com/iam/. In our case it is AWS. Terraform, write code once, and use it many times. Create a project folder and open it in VS code editor. After the DB subnet group has been created, we can now create the database. We need a key pair to run our instance. These configuration files are placed inside the Terraform modules. Provider_type: It is the aws resource type to create in the provider, e.g., aws_instance., Name:It is the aws resource name, e.g., instance name: example.. Thanks for reading my article till end. First, we are going to put together the variables file for Terraform. AWS generates a PEM file that you should store in a safe place. Log in to the Ubuntu machine using your favorite SSH client. 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. aws_ instances aws_ key_ pair aws_ launch_ template EC2 Image Builder ECR (Elastic Container Registry) ECR Public ECS (Elastic Container) EFS (Elastic File System) EKS (Elastic Kubernetes) ELB (Elastic Load Balancing) ELB Classic EMR EMR Containers EMR Serverless ElastiCache Elastic Beanstalk Elastic Transcoder Elasticsearch Elemental MediaConvert This is a Syntax of how Terraform Configuration file blockis formatted. Run a Terraform Destroy Destroy the resources, If you are happy, with the resources to be create, type yes. 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. Almost all of them are OpenSource as well backed by a large community. We are saving it as an output variable. Attempt to curl the returned output for the bucket_domain_name. Set the user details and access typeSelect Programmatic access, 4. Included features: Automatically create a Security Group Option to switch EIP attachment CloudWatch monitoring and automatic reboot if instance hangs Assume Role capability This project is part of our comprehensive "SweetOps" approach towards DevOps. You can customize your theme, font, and more by creating your DEV account. Manage Settings Terraform typically means transforming (a planet) so as to resemble the earth, especially so that it can support human life. Step 3) Click on Launch Instances to create a new EC2 instance. 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. This command is used to initialize a working directory containing the terraform configuration files. Docker 2. 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. But at times, you want to manage multiple objects of the same kind, such as creating four AWS EC2 instances of the same type in the AWS cloud without writing a separate block for each instance. Here is the sample Terraform Configuration file saved with *.tf extension. Navigate to that path where you created the main.tf file and run the terraform init command. Step 5: Validate EIP Association. Terraform commands terraform init terraform plan terraform apply All executed successfully. Step 2: Create a security group Since this was a proof of concept and since I did not require HTTPS traffic, I did not bother to create more than what was necessary. It helps with most of the autocompletes. Templates let you quickly answer FAQs or store snippets for re-use. In order to connect to AWS. The following keys need to be changed with the keys of your IAM user. Terraform installed on the Ubuntu Machine. Ubuntu machine should have IAM role attached with full access to create AWS secrets in the AWS Secret Manager or administrator permissions. Terraform code, that is, Terraform configuration files, are written in a tree-like structure to ease the overall understanding of code with .tf format or .tf.json or .tfvars format. Required fields are marked *. Lets see how to create a key pair. For further actions, you may consider blocking this person and/or reporting abuse. Pulumi is an alternative Infrastructure as Code (IaC) solution which can be written in various different, well-known programming languages.