It is important to frequently update and apply security patches to deployed EC2 instances. If the deployment schedule is infrequent, this can pose a security risk because the instance doesn’t have the latest patches. This deploys the new version of the operating system, including patches and upgrades. For more information about the different approaches for testing Terraform code, see Testing HashiCorp Terraform (Terraform blog post).ĭuring deployment, Terraform uses the replaces the EC2 instance each time a new version of the Amazon Linux 2 AMI is detected. It’s a good practice to add automated tests for IaC. At a minimum, we recommend that you perform basic validation and formatting checks by using the terraform validate and terraform fmt -check -recursive Terraform commands. This pattern was scanned by using Checkov, a static code-analysis tool for IaC. We recommend using automated code-scanning tools to improve the security and quality of the code. This virtual network resembles a traditional network that you’d operate in your own data center, with the benefits of using the scalable infrastructure of AWS. This pattern uses Session Manger, a capability of Systems Manager.Īmazon Virtual Private Cloud (Amazon VPC) helps you launch AWS resources into a virtual network that you’ve defined. It simplifies application and resource management, shortens the time to detect and resolve operational problems, and helps you manage your AWS resources securely at scale. You can launch as many virtual servers as you need and quickly scale them up or down.ĪWS Identity and Access Management (IAM) helps you securely manage access to your AWS resources by controlling who is authenticated and authorized to use them.ĪWS Systems Manager helps you manage your applications and infrastructure running in the AWS Cloud. For more information, see Resource-based policies in the IAM documentation.ĪWS Command Line Interface (AWS CLI) is an open-source tool that helps you interact with AWS services through commands in your command-line shell.Īmazon Elastic Compute Cloud (Amazon EC2) provides scalable computing capacity in the AWS Cloud. Similarly, following the principle of least privilege, the bastion host doesn’t have access to any other resources in your AWS account unless you explicitly grant permissions. For more information, see Connect your virtual private cloud (VPC) to other networks in the Amazon VPC documentation. You can add a specific network configuration that allows it to communicate with the internet. This design isolates the EC2 instance from the public internet. In this pattern, the bastion host is located in a private subnet without an NAT gateway and internet gateway. While it is possible to use other Amazon Machine Images (AMIs), other operating systems are out of scope for this pattern. This pattern assumes that the target bastion host uses Amazon Linux 2 as its operating system. Before deployment, adjust the sample code in the repository to meet your requirements and use case. It should not be used in its current form in production environments. This pattern is intended as a proof of concept (PoC) or as a basis for further development.
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