![]() The last provisioner block executes remote commands on the EC2 instance, which installs some needed dependencies by running a bash script that is transferred to one of the previous provisioner blocks and deploys Komiser as a Docker container. The first three provisioner blocks upload files from the local machine to the EC2 instance. The provisioned blocks define a series of file transfers and commands to execute on the EC2 instance after it's launched. This Advanced Cloud Computing and DevOps training is led by experts from IIT Roorkee who aim to make you master in cloud computing concepts, DevOps tools, AWS. We will then use PostForwarding with AWS Session Manager to access our server from our local machine. It also attaches an IAM instance profile with the permissions required by Komiser to build your asset inventory. In this post we will set up a private EC2 instance (in a private subnet), and use SSM session manager to access the instance that hosts a Jupyter Notebook server. The instance type is t2.medium (recommended size to host Komiser) and uses a public IP address and a security group that allows traffic on port 22 for SSH access and 3000 for serving the Komiser dashboard. The resource uses Amazon Linux 2 as an AMI which is obtained using the data block and the aws_ami data source. Using Terraform, I wanted to try setting up a AWS VPC with a Public and Private subnet with an ec2 instance in each subnet. Next, declare an EC2 instance in ec2.tf file with aws_instance resource. Once done, run terraform init to download the AWS module. In this example, S3 is used as the backend for storing Terraform state files. To get started, define your backend and declare AWS as your provider in the terraform.tf file. We are using the stock Amazon linux image for our bastion host. In this part we enable the aws load balancer controllerĭeploy and test a sample app (Manually and with CICD)įinally we do some testing of our cluster and CICD pipeline.AWS architecture for Komiser deployment All Terraform templates used in this tutorial can be found in the GitHub repository. This is a script that pulls all of the outputs defined in terraform outputs.tf file and. This stage changes the worker nodes int he node group so this will use the secondary CIDR address range for pods running in the EKS cluster. In this stage we deploy a private node group using a launch template, a specific AMI and a customized user data to install the SSM agent.Ĭonfigure the worker nodes to use advanced networking This stage deploys the EKS control plane. This stage deploys a private ECR container registry and sets up CodeCommit, CodeBuild and CodePipeline. This stage inter-connects the Cloud9 IDE & CICD VPC with the private EKS VPC. In the next stage we create the required IAM roles and policies for EKS.Ĭonnecting the Cloud9 IDE to the EKS network In this stage we build the necessary base networking components for out EKS Cluster, and the VPC for CICD (CodeBuild). In this stage we create some pre-requisite S3 buckets and dynamodDB tables that will be used to centrally hold the Terraform “state” and control locking of that state: You will perform each of these stages in turn as you progress through the workshop. The build out of our private EKS Cluster is divided into the following stages, each of which could be performed by a separate team. In this section, we take a look at how to build the private EKS cluster in distinct stages designed to reflect different responsibility and minimum privilege models that are sometimes seen in large organizations. This can be further enhanced by provisioning an EKS cluster to operate in a private VPC with no Internet ingress or egress connectivity. Amazon EKS provides secure, managed Kubernetes clusters by default. It's 100 Open Source and licensed under the APACHE2. This project is part of our comprehensive 'SweetOps' approach towards DevOps. Connecting through a Bastion Host with SSH bastionhostkey, The public key from the remote host or the signing CA, used to verify the host connection. Security is a critical component of configuring and maintaining Kubernetes clusters and applications. Terraform module to define a generic Bastion host with parameterized userdata and support for AWS SSM Session Manager for remote access with IAM authentication. The following diagram pictures the end state for this workshop:īuilding a Private EKS cluster with a multi-part responsibility model. We will also create a VPC hosted CI/CD pipeline using CodeCommit, CodeBuild and CodePipeline. In this part of the Workshop we will build a private EKS cluster using Terraform, using our Cloud9 IDE as a bastion host.
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