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

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. Visit the AWS console. If you had any issues throughout this tutorial, you can compare your code to the final code here: https://github.com/dispact/terraform-custom-vpc. Amazon EC2 stores the public key on our instance, and we store the private key. If those are your exact thoughts, dont worry. . Time to create the security groups! What happens under the hood when Node.js works on tasks such as database queries? Select the region where instances will be created (as Key Pais are unique to each region), Go to EC2 AWS web console. We are ready with the boilerplate code. Terraform configuration files for creating an AWS EC2 Instance Create a dedicated directory where we can create terraform configuration files. Write Terraform configuration files for creating an EC2 Instance. First, we will need to install the MySQL client. This command is an easy way to check whether the execution plan for a set of changes matches your expectations without creating any changes to real resources.Anything with a sign + will be created, anything with a sign will be deleted, and anything with a tilde sign ~ will be modified in place. In an overview, This is what we are doing in this configuration file. , In the bucket_name variable block, you must change the default name value since S3 bucket names must be unique across AWS. Select your EC2 instance and click on it to go to the instance details screen. This will create your EC2 instance in AWS and create a private key file on your local machine. 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. 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. Copy/Write the file to the S3 bucket URI. It is primarily used to build and test the integration of new code in your project by executing a set of instructions found in the Jenkinsfile. 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. Run the following command: Once that MySQL client is installed, lets try connecting to the RDS instance. When we execute the above command, we can see that 1 new resource has been added and 0 has been destroyed in the output. So make sure intend to do so. The first command to be used is 'terraform init'. Click anywhere on the image to buy it on amazon. Once you have created'variables.tf', do not forget to change values assigned to variable. Execute the terraform plancommand and it would present some detailed info on what changes are going to be made into your AWS infra. 10. For further actions, you may consider blocking this person and/or reporting abuse. Otherwise, you wont be able to connect to your instance from your local system. You can literally get started with EC2 in minutes using AWS Management Console. ; Obtain credential access through a worker's . Repeatability we create our instance in code so its easy to repeat this creation process again and again. 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. Note*: Once the Access Key ID and Secret Access Key is created you can download and save them somewhere safe and if you lost it you cannot recover (or) re-download it. In our case it is AWS. Once all the pre-requisite software are installed, proceed to the next sections. Navigate to that path where you created the main.tf file and run the terraform init command. Now open the terminal of VS code editor or command prompt (cmd). AWS Provider:The Amazon Web Services provider is used to interact with the many resources supported by AWS. Run the following command in the MySQL terminal. You need to save it right so that you can use it in terraform. Terraform modules are on the top level in the hierarchy where configuration files reside. Terraform providers will need to be defined and installed to use certain types of resources. So you should keep updating the API key and should not use the Same API key for a long period of time. There are ample amount of BLOCK_TYPEavailable in Terraform and the resourceis primary and all others are to support building that specified resource. With Terraform, they can use code to streamline that process. After successfully running the terraform init command, Run the terraform plancommand. Templates let you quickly answer FAQs or store snippets for re-use. If the EC2 instance is SSM managed, you can use AWS Systems Manager Run Command to execute command on the instance. Now that everything else has been set up, we are ready to set up the EC2 instance. I will not be covering Jenkins in-depth in this article. Terraform is an infrastructure as a code (Iac) tool that allows you to create, change, and keep infrastructure compliance. , In this step, we will create our Terraform configuration files: main.tf, providers.tf, variables.tf, and outputs.tf. From the EC2 console dashboard, in the Launch instance box, choose Launch instance, and then choose Launch instance from the options that appear. Note:Useterraform destroywith caution. Posted on May 15, 2022 Now its time to begin setting up our AWS environment. Make sure that you have the private key of the key pair you are specifying handy with you. IF you plan on deploying resources to a region besides us-east-1, you can modify the region value in the aws_region variable block. How do we know Jenkins is installed? 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. I have specified the minimum set of parameters to create an instance above. /* 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. Create a file called vars.tfvarsThis will contain the value of all your input variables, 12. Please read the same here, Terraform AWS EC2 user_data example aws_instance| Devops Junction. Through this tutorial, you learned how to use Terraform to configure AWS VPC, EC2, and RDS instances. For Linux instances, the private key allows us to securely SSH into our instance. Such as-. We will be using MySQL RDS for the database. Refer. 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. When you execute the terraform applycommand the changes would be applied to the AWS Infra. Terraform and AWS go hand in hand and terraform has a lot of resources and configurations that support the entire AWS Infrastructure management tasks like AWS EC2 instance creation, Security Group creation, Virtual Private Cloud (VPC) Setup, Serverless set up, etc. This tutorial will use only the AWS provider. But it is important to manually verify all the four AWS instances launched in AWS. Terraform deploying resources in AWS. 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. So now, we should go and create these access and secret keys for your AWS account. This is going to contain 3 parts: We will be creating a new key pair in our terraform directory. Welcome Back, everyone! Step 1) Open up your AWS console or directly visit ' console.aws.amazon.com '. In real time, we might need more than just creating a single instance. Login to the AWS Console 2. I will only bootstrap an EC2 with Jenkins software and confirm it has been installed successfully. The terraform show command will output the current infrastructure state. Create another file and name it as provider.tf. Now that the subnets have been created, we can go ahead and create the route tables. Now that you have all the Terraform configurations read for execution. In the navigation pane, choose Roles then choose Create role. Amazon Elastic Compute Cloud (Amazon EC2) provides the scalable capacity in the Amazon Web Services (AWS) Cloud. Assuming you are still logged into the Ubuntu machine using your favorite SSH client. Create an EC2using the Terraform configuration files. In this article, we are going to learn how to use Terraform to create AWS EC2 instance and create a Terraform AWS infrastructure. The resource name and VPC are set to variables created in the next step. Once done, you can create an EC2 instance using the key pair. Make note of database_endpoint and database_port, we will need those once we are inside the EC2 instance. KCD Chennai 2022: A CNCF Virtual conference about Kubernetes, Cloud-native, Cloud, DevOps and Open-source This terraform-for_each-demo folder will contain all the configuration files that Terraform needs. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. I thought it would be wiser to choose AWS as our cloud provider for this post. terraform destroy. You can also subscribe to our newsletter below to not miss any updates from us. In simple words, its a virtual machine similar to an actual server and you can use it to deploy your application. Configuration: Configuration consists of one or more arguments that are specific to the resource. Also, we have specified key_name to specify the name of the key pair to attach to the instance. Create an IAM user with admin privileges. Also depending on your region, you need to provide the AMI Id that will be used to create an instance. So which argument do you plan to use in your next Terraform deployment? Dont worry!. Hope this article helps you understand, How Terraform AWS or Terraform EC2 instance creation works in real-time. Step 2 Create a Key-pair for the server. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Once you have created the files above and added the Terraform configuration, you should have the following files in your directory. Once done, you will have a private and public key file with you, Copy the content of the public key file and use that to create your key pair in AWS as shown below. Use the following command to create a directory and change our present working directory to it. Subscribe to our newsletter below to get awesome AWS learning materials delivered straight to your inbox. The terraform plan command is used to create an execution plan. 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. Providers are easily downloaded and installed with a few lines of HCL and a single command. With AWS EC2, you dont need to worry about the hardware and time to develop and deploy applications on the machines. The Cookies collected are used only to Show customized Ads. 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. Step 4) Select an AMI (Amazon Machine Image). 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. ; Step 2: Once the attacker gained access to the pod, the malware was able to perform two initial actions during execution: . So it refers to the profile: defaultfor the authentication. Step#5: Now open the terminal of VS code editor or command prompt (cmd). When it is finished, you should see a success message. To connect to our instance, we need to ensure that this default Security Group allows traffic into the created instance from our IP address. As we can see from our returned output, Terraform will create 13 resources in AWS. Now, you should have 3 files, viz, variables.tf, terraform.tfvars and main.tf. Step4: Go ahead and Apply it with Terraform apply, EC2 instances with different Configuration. Almost all of them are OpenSource as well backed by a large community. This will install the latest module and provider versions. We're a place where coders share, stay up-to-date and grow their careers. Create an Instance Profile allowing S3 write access for the Jenkins Server and assign the role to your Jenkins Server EC2 instance. Please let me know in the comment section. Notify me of follow-up comments by email. In the AWS console we need to remember where and what to click so we risk missing step(s). What parameter should I add for populating the NAME field. In the next post we learn how to use Pulumi to create an EC2 instance. Now that the EC2 instance has been created, we can create the Elastic IP and attach it to the EC2 instance. 16. We need a API programmatic access for AWS. Terraform, An outstanding and innovative product from hashicorp and it is a leader in Infrastructure as Code tools Segment. Here's an example of how to delete the AWS EC2 instance created in the previous example: terraform destroy. You can get the AMI Id from the console. The one mentioned over here is a dummy one. It was specifically designed as a workaround for using remote-exec provisioner. You will be prompted to confirm that you want to perform these actions. The input file for terraform is known as Terraform Configuration. Bootstrap the EC2 instance with a script that will install and start Jenkins. Resource actions are indicated with the following symbols: Plan: 4 to add, 0 to change, 0 to destroy. This file allows Terraform to interact with AWS cloud using AWS API. I would say they named this product right. While this sounds convenient. Now that we have defined both the variables and secrets, lets start creating our config file. If you are using VS Code, install the terraform extension. Simply runterraform destroyand it will delete all that you created usingmain.tf. By following this article, you will be able to create your first EC2 Instance creation using Terraform. Source the global source address for the provider you intend to use, such as hashicorp/aws. Open the file in your editor and add the following information: Go ahead and add the following code to your, Creating an Elastic IP and attaching it to the EC2 instance. Terraform configuration is written in a specific language namedHashicorp Configuration Languageand it can optionally be written in JSONas well. We empower and invest in diverse technology talent to increase representation for all people, and to create higher performing enterprise organizations. If you have any questions, please leave a comment. 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 Time to create the subnets. Follow me for more content like this!! Another special argument is Terraform count. Either you should save these Keys as Environment variables (or) save it as a AWS Config profile. This may be the only time you hear me say this, but I love cleaning up behind myself (in Terraform)! We need a key pair to run our instance. ssh -i "tutorial_kp.pem" ubuntu@$(terraform output -raw web_public_dns), ssh -o 'IdentitiesOnly yes' -i "tutorial_kp.pem" ubuntu@$(terraform output -raw web_public_dns), sudo apt-get update -y && sudo apt install mysql-client -y, mysql -h -P -u -p, terraform destroy -var-file="secrets.tfvars", https://github.com/dispact/terraform-custom-vpc, EC2 instances should be accessible anywhere on the internet via HTTP, Only you should be able to access the EC2 instances via SSH, RDS should be on a private subnet and inaccessible via the internet, Only the EC2 instances should be able to communicate with RDS, Create an Internet Gateway and attach it to the VPC, Create 3 subnets: 1 public for EC2 and 2 private for RDS, Create 2 route tables: 1 public and 1 private, Create 2 security groups: 1 for EC2 and 1 for RDS, Verify that everything is set up correctly, Lets create a directory for our terraform project and cd into it, Create a file in the project directory called, Create a file in the same directory called. With you every step of your journey. Login to AWS Management Console and navigate to the EC2 dashboard. Updated on Jun 7, 2022. You can create an SSH key and use the public key part to create a key pair on AWS as shown below. Lets go ahead and see how to create EC2 instance using terraform with key pair on AWS. Install AWS CLIon your machine and configure it with the IAM user credentials. Set the user permissionsUnder Set permissions < Attach an existing policy < Select AdministratorAccess. So we have Successfully created an EC2 instance and a Security Group and logged into the Server. This will allow the team to utilize the tool in multiple environments and better track any changes made to the environment. Read this book and I highly recommend it. it helps us set up even a complicated infrastructure in a short span of time. Which are ami and instance_type. Now you have learnt how to create EC2 instance with Terraform and with user_data as well. A key pair is a security credential that you use while connecting to your EC2 instance. Some of the Terraform blocks (elements) and their purpose is given below. Run a Terraform Apply Create the resources, If you are happy, with the resources to will be created, type yes. In case if you are using the Environment variables method. Next initialize the Terraform using terraform init command followed by terraform plan and finally terraform apply to deploy the changes. This is a Syntax of how Terraform Configuration file blockis formatted. This command downloads and installs plugins for providers used within the configuration. Lets go ahead and create some outputs. terraform apply is real-time and production. Before you can create an EC2 instance with key pair, you will need a key pair. Terraform outruns them for the right reasons. Once the Initialization completed. So far we have seen all the basics of Terraform and how to create our first EC2 instance with Terraform. As well be working with AWS, here is our provider declaration section and authentication section-. Congratulations! To avoid any unnecessary charges in AWS, lets use terraform to destroy everything that we have created. It will become hidden in your post, but will still be visible via the comment's permalink. It leverages a provider platform API to create and manage resources for the respective platform (e.g., AWS, Azure, GCP, Kubernetes, etc.). The instructions are at the "Amazon EC2 key pairs and Windows instances" official documentation. As it deletes whatever you created. In this project write-up, I will cover deploying an EC2 into a new VPC with Jenkins installed using Terraform. Navigate to that path where you created the main.tffile and run theterraform initcommand. Using ChatGPT to Create AWS Cloudformation & Terraform Templates Flavius Dinu Terraform from 0 to hero 7. The list of users per distribution can be found here: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/connection-prereqs.html, (ii) Connect to your EC2 Instance using the private key file, the username and the public_dns name from the output above, 23. Lets check whether its created or not. Use the following command to create a directory and change your present working directory to it. We partner with you and bring together talented team of designers, front end developers, back end developers, Software architect, Cloud engineers to make your vision a reality and business a success. AWS account with Administrator Access permissions, AWS CLI installed and configured with your programmatic access credentials. As you can see, you can use aws_instance resource to create an EC2 instance. Now its time to clean up our resources. We have kept the declaration of these 2 variables in. You can find the instructions hereInstalling Terraform CLI. An example of data being processed may be a unique identifier stored in a cookie. AWS generates a PEM file that you should store in a safe place. Note: You may notice that this command creates a state file on your local machine called terraform.tfstate which keeps track of the resources you have created. If you are a beginner I highly recommend you to read my previous post onGetting Started With Terraform on AWS In Right Way. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. So if you will be connecting to your EC2 instance from your local machine, consider using a key pair. First, we are going to put together the variables file for Terraform. Amazon EC2 enables you to scale up or down the computations such as memory or CPU when needed. Thanks for reading my article till end. Here is what you can do to flag kcdchennai: kcdchennai consistently posts content that violates DEV Community's Alright, ONE more thing before we finish up here. The best practice is to keep changing the API Access Key and recreating it. Follow me on Linkedin My Profile In our case, we are going to need 1 public subnet and 2 private subnets. . Once complete, all of your resources should be removed. you will see instance is created in AWS. Launch EC2 instance. DEV Community A constructive and inclusive social network for software developers. Terraform is a popular DevOps IaC tool that allows you to build, manage, and automate on-premise and cloud resources declaratively with a configuration file. 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" { Create a file called variables.tf This will contain the name, description, type and default values of all your input variables. In the commands above, an AWS instance is created with unlimited CPU usage. Git 5. A better way is using Terraform to . Enter the following command: It will take a few minutes to destroy everything. I have specified the minimum set of parameters to create an instance above. So let us go and do some farming in the AWS planet. You mustchangeami_key_pair_name,ami_id andsubnet_id as these are specific to my environment. 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. 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. We and our partners use cookies to Store and/or access information on a device. An AWS Security Group determines the traffic that can flow in and out of your network. As soon as you click, a variety of options for connecting the EC2 instance will appear. Under Name and tags, for Name, enter a descriptive name for your instance. In this five part series we will create an AWS Elastic Compute Cloud (EC2) Instance using: In this post we will create an AWS EC2 Instance via Terraform. Create a dedicated directory where we can create terraform configuration files. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); The Most Trending, Quality DevOps Cloud articles, Automation guides, series, News, Podcasts, and videos. But its not recommended at all as your private key will lie in your state file unencrypted. How to create Secrets in AWS Secrets Manager using Terraform in Amazon account. Best AWS, DevOps, Serverless, and more from top Medium writers. Plan: 2 to add, 0 to change, 0 to destroy.