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Amazon EKS Cluster: Hello World!
This example deploys an EKS Kubernetes cluster with an EBS-backed StorageClass, and deploys a Kubernetes Namespace and Deployment of NGINX into the cluster.
Deploying the App
To deploy your infrastructure, follow the below steps.
Prerequisites
- Install Pulumi
- Install Node.js
- Install a package manager for Node.js, such as npm or Yarn.
- Configure AWS Credentials
- Install
aws-iam-authenticator
Steps
After cloning this repo, from this working directory, run these commands:
Install the required Node.js packages:
This installs the dependent packages needed for our Pulumi program.
$ npm installCreate a new stack, which is an isolated deployment target for this example:
This will initialize the Pulumi program in TypeScript.
$ pulumi stack initSet the required AWS configuration variables:
This sets configuration options and default values for our cluster.
$ pulumi config set aws:region us-west-2Stand up the EKS cluster:
To preview and deploy changes, run
pulumi updateand select “yes.”The
updatesub-command shows a preview of the resources that will be created and prompts on whether to proceed with the deployment. Note that the stack itself is counted as a resource, though it does not correspond to a physical cloud resource.You can also run
pulumi up --diffto see and inspect the diffs of the overall changes expected to take place.Running
pulumi upwill deploy the EKS cluster. Note, provisioning a new EKS cluster takes between 10-15 minutes.$ pulumi update Previewing update (eks-demo): Type Name Plan + pulumi:pulumi:Stack eks-hello-world-eks-demo create + ├─ eks:index:Cluster helloworld create + │ ├─ eks:index:ServiceRole helloworld-eksRole create + │ │ ├─ aws:iam:Role helloworld-eksRole-role create + │ │ ├─ aws:iam:RolePolicyAttachment helloworld-eksRole-90eb1c99 create + │ │ └─ aws:iam:RolePolicyAttachment helloworld-eksRole-4b490823 create + │ ├─ eks:index:ServiceRole helloworld-instanceRole create + │ │ ├─ aws:iam:Role helloworld-instanceRole-role create + │ │ ├─ aws:iam:RolePolicyAttachment helloworld-instanceRole-03516f97 create + │ │ ├─ aws:iam:RolePolicyAttachment helloworld-instanceRole-e1b295bd create + │ │ └─ aws:iam:RolePolicyAttachment helloworld-instanceRole-3eb088f2 create + │ ├─ pulumi-nodejs:dynamic:Resource helloworld-cfnStackName create + │ ├─ aws:ec2:SecurityGroup helloworld-eksClusterSecurityGroup create + │ ├─ aws:iam:InstanceProfile helloworld-instanceProfile create + │ ├─ aws:eks:Cluster helloworld-eksCluster create + │ ├─ pulumi-nodejs:dynamic:Resource helloworld-vpc-cni create + │ ├─ pulumi:providers:kubernetes helloworld-eks-k8s create + │ ├─ aws:ec2:SecurityGroup helloworld-nodeSecurityGroup create + │ ├─ kubernetes:core:ConfigMap helloworld-nodeAccess create + │ ├─ kubernetes:storage.k8s.io:StorageClass helloworld-gp2 create + │ ├─ aws:ec2:SecurityGroupRule helloworld-eksClusterIngressRule create + │ ├─ aws:ec2:LaunchConfiguration helloworld-nodeLaunchConfiguration create + │ ├─ aws:cloudformation:Stack helloworld-nodes create + │ └─ pulumi:providers:kubernetes helloworld-provider create + └─ aws-infra:network:Network vpc create + ├─ aws:ec2:Vpc vpc create + ├─ aws:ec2:Eip vpc-nat-0 create + ├─ aws:ec2:Eip vpc-nat-1 create + ├─ aws:ec2:InternetGateway vpc create + ├─ aws:ec2:Subnet vpc-nat-1 create + ├─ aws:ec2:Subnet vpc-0 create + ├─ aws:ec2:Subnet vpc-nat-0 create + ├─ aws:ec2:Subnet vpc-1 create + ├─ aws:ec2:RouteTable vpc create + ├─ aws:ec2:NatGateway vpc-nat-1 create + ├─ aws:ec2:RouteTableAssociation vpc-nat-1 create + ├─ aws:ec2:NatGateway vpc-nat-0 create + ├─ aws:ec2:RouteTableAssociation vpc-nat-0 create + ├─ aws:ec2:RouteTable vpc-nat-1 create + ├─ aws:ec2:RouteTable vpc-nat-0 create + ├─ aws:ec2:RouteTableAssociation vpc-1 create + └─ aws:ec2:RouteTableAssociation vpc-0 create Resources: + 42 to create clusterng (eks-demo): Type Name Status Info + pulumi:pulumi:Stack eks-hello-world-eks-demo created + ├─ eks:index:Cluster helloworld created + │ ├─ eks:index:ServiceRole helloworld-eksRole created + │ │ ├─ aws:iam:Role helloworld-eksRole-role created + │ │ ├─ aws:iam:RolePolicyAttachment helloworld-eksRole-90eb1c99 created + │ │ └─ aws:iam:RolePolicyAttachment helloworld-eksRole-4b490823 created + │ ├─ eks:index:ServiceRole helloworld-instanceRole created + │ │ ├─ aws:iam:Role helloworld-instanceRole-role created + │ │ ├─ aws:iam:RolePolicyAttachment helloworld-instanceRole-3eb088f2 created + │ │ ├─ aws:iam:RolePolicyAttachment helloworld-instanceRole-03516f97 created + │ │ └─ aws:iam:RolePolicyAttachment helloworld-instanceRole-e1b295bd created + │ ├─ pulumi-nodejs:dynamic:Resource helloworld-cfnStackName created + │ ├─ aws:iam:InstanceProfile helloworld-instanceProfile created + │ ├─ aws:ec2:SecurityGroup helloworld-eksClusterSecurityGroup created + │ ├─ aws:eks:Cluster helloworld-eksCluster created + │ ├─ pulumi:providers:kubernetes helloworld-eks-k8s created + │ ├─ pulumi-nodejs:dynamic:Resource helloworld-vpc-cni created + │ ├─ aws:ec2:SecurityGroup helloworld-nodeSecurityGroup created + │ ├─ kubernetes:core:ConfigMap helloworld-nodeAccess created + │ ├─ kubernetes:storage.k8s.io:StorageClass helloworld-gp2 created + │ ├─ aws:ec2:SecurityGroupRule helloworld-eksClusterIngressRule created + │ ├─ aws:ec2:LaunchConfiguration helloworld-nodeLaunchConfiguration created + │ ├─ aws:cloudformation:Stack helloworld-nodes created + │ └─ pulumi:providers:kubernetes helloworld-provider created + └─ aws-infra:network:Network vpc created + ├─ aws:ec2:Vpc vpc created + ├─ aws:ec2:Eip vpc-nat-0 created + ├─ aws:ec2:Eip vpc-nat-1 created + ├─ aws:ec2:InternetGateway vpc created + ├─ aws:ec2:Subnet vpc-nat-1 created + ├─ aws:ec2:Subnet vpc-0 created + ├─ aws:ec2:Subnet vpc-nat-0 created + ├─ aws:ec2:Subnet vpc-1 created + ├─ aws:ec2:RouteTable vpc created + ├─ aws:ec2:NatGateway vpc-nat-1 created + ├─ aws:ec2:NatGateway vpc-nat-0 created + ├─ aws:ec2:RouteTableAssociation vpc-nat-0 created + ├─ aws:ec2:RouteTableAssociation vpc-nat-1 created + ├─ aws:ec2:RouteTable vpc-nat-1 created + ├─ aws:ec2:RouteTableAssociation vpc-1 created + ├─ aws:ec2:RouteTable vpc-nat-0 created + └─ aws:ec2:RouteTableAssociation vpc-0 created Diagnostics: pulumi:pulumi:Stack (eks-hello-world-eks-demo): Outputs: kubeconfig: { apiVersion : "v1" clusters : [ [0]: { cluster: { certificate-authority-data: "<CERT_DATA>" server : "https://<SERVER_ADDR>.us-west-2.eks.amazonaws.com" } name : "kubernetes" } ] contexts : [ [0]: { context: { cluster: "kubernetes" user : "aws" } name : "aws" } ] current-context: "aws" kind : "Config" users : [ [0]: { name: "aws" user: { exec: { apiVersion: "client.authentication.k8s.io/v1beta1" args : [ [0]: "token" [1]: "-i" [2]: "helloworld-eksCluster-e9e1711" ] command : "aws-iam-authenticator" } } } ] } Resources: + 42 created Duration: 13m7sAfter 10-15 minutes, your cluster will be ready, and the kubeconfig JSON you’ll use to connect to the cluster will be available as an output.
As part of the update, you’ll see some new objects in the output: a
Namespacein Kubernetes to deploy into, aDeploymentresource for the NGINX app, and a LoadBalancerServiceto publicly access NGINX.Pulumi understands which changes to a given cloud resource can be made in place, and which require replacement, and computes the minimally disruptive change to achieve the desired state.
Note: Pulumi auto-generates a suffix for all objects. See the Pulumi Programming Model for more info.
deploymentName : "helloworld-58jkmc7c" ... namespaceName : "helloworld-xaldhgca" serviceHostname: "a71f5ab3f2a6e11e3ac39200f4a9ad5d-1297981966.us-west-2.elb.amazonaws.com" serviceName : "helloworld-3fc2uhh7"If you visit the FQDN listed in
serviceHostnameyou should land on the NGINX welcome page. Note that it may take a minute or so for the LoadBalancer to become active on AWS.Access the Kubernetes Cluster using
kubectlTo access your new Kubernetes cluster using
kubectl, we need to set up thekubeconfigfile and downloadkubectl. We can leverage the Pulumi stack output in the CLI, as Pulumi facilitates exporting these objects for us.$ pulumi stack output kubeconfig --show-secrets > kubeconfig $ export KUBECONFIG=$PWD/kubeconfig $ export KUBERNETES_VERSION=1.11.5 && sudo curl -s -o /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/v${KUBERNETES_VERSION}/bin/linux/amd64/kubectl && sudo chmod +x /usr/local/bin/kubectl $ kubectl version $ kubectl cluster-info $ kubectl get nodesWe can also use the stack output to query the cluster for our newly created Deployment:
$ kubectl get deployment $(pulumi stack output deploymentName) --namespace=$(pulumi stack output namespaceName) $ kubectl get service $(pulumi stack output serviceName) --namespace=$(pulumi stack output namespaceName)We can also create another NGINX Deployment into the
defaultnamespace usingkubectlnatively:$ kubectl create deployment my-nginx --image=nginx $ kubectl get pods $ kubectl delete deployment my-nginxBy deploying the NGINX image in this way, it is outside of Pulumi’s control. But this is simply to show that we can control our cluster via the CLI as well.
Experimentation
From here on, feel free to experiment. Make edits and run
pulumi upafterwards to incrementally update your stack.Running Off-the-Shelf Guestbook YAML
For example, if you wish to pull existing Kubernetes YAML manifests into Pulumi to aid in your transition, append the following code block to the existing
index.tsfile and runpulumi up.This is an example of how to create the standard Kubernetes Guestbook manifests in Pulumi using the Guestbook YAML manifests. We take the additional steps of transforming its properties to use the same Namespace and metadata labels that the NGINX stack uses, and also make its frontend service use a LoadBalancer typed Service to expose it publicly.
// Create resources for the Kubernetes Guestbook from its YAML manifests const guestbook = new k8s.yaml.ConfigFile("guestbook", { file: "https://raw.githubusercontent.com/pulumi/pulumi-kubernetes/master/tests/sdk/nodejs/examples/yaml-guestbook/yaml/guestbook.yaml", transformations: [ (obj: any) => { // Do transformations on the YAML to use the same namespace and // labels as the NGINX stack above if (obj.metadata.labels) { obj.metadata.labels['appClass'] = namespaceName } else { obj.metadata.labels = appLabels } // Make the 'frontend' Service public by setting it to be of type // LoadBalancer if (obj.kind == "Service" && obj.metadata.name == "frontend") { if (obj.spec) { obj.spec.type = "LoadBalancer" } } } ], }, { providers: { "kubernetes": clusterProvider }, }, ); // Export the Guestbook public LoadBalancer endpoint export const guestbookPublicIP = guestbook.getResourceProperty("v1/Service", "frontend", "status").apply(s => s.loadBalancer.ingress[0].ip);Once you’ve finished experimenting, tear down your stack’s resources by destroying and removing it:
$ pulumi destroy --yes $ pulumi stack rm --yes