Enabling IPv6 on EKS Clusters With VPC CNI

To enable IPv6 on EKS clusters with VPC CNI using Pulumi in TypeScript, we will follow these steps:

1. Introduction: Provide an overview of the solution and the key services involved.
2. Step-by-Step Explanation: Detail the steps required to enable IPv6 on EKS clusters.
3. Key Points: Highlight important considerations and configurations.
4. Conclusion: Summarize the solution and its benefits.

Introduction

In this solution, we will enable IPv6 on Amazon EKS clusters using the Amazon VPC Container Network Interface (CNI) plugin. This allows Kubernetes pods to have native IPv6 addresses, improving scalability and network performance. The key services involved are Amazon EKS, Amazon VPC, and the VPC CNI plugin.

Step-by-Step Explanation

1. Create a VPC with IPv6 Support: We will create a new VPC with IPv6 CIDR blocks and subnets.
2. Create an EKS Cluster: We will create an EKS cluster within the VPC.
3. Configure the VPC CNI Plugin: We will configure the VPC CNI plugin to support IPv6.
4. Deploy the EKS Cluster: We will deploy the EKS cluster with the necessary configurations.

Key Points

• Ensure that the VPC and subnets have IPv6 CIDR blocks.
• Configure the VPC CNI plugin to enable IPv6 support.
• Verify that the EKS cluster and pods have IPv6 addresses.

Conclusion

Enabling IPv6 on EKS clusters with VPC CNI using Pulumi in TypeScript allows for improved scalability and network performance. By following the steps outlined, you can successfully configure your EKS cluster to support IPv6.

Full Code Example

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";
import * as k8s from "@pulumi/kubernetes";

// Create a VPC with IPv6 support
const vpc = new aws.ec2.Vpc("vpc", {
    cidrBlock: "10.0.0.0/16",
    assignGeneratedIpv6CidrBlock: true,
    enableDnsSupport: true,
    enableDnsHostnames: true,
});

// Create subnets
const subnet1 = new aws.ec2.Subnet("subnet1", {
    vpcId: vpc.id,
    cidrBlock: "10.0.1.0/24",
    availabilityZone: "us-west-2a",
});

const subnet2 = new aws.ec2.Subnet("subnet2", {
    vpcId: vpc.id,
    cidrBlock: "10.0.2.0/24",
    availabilityZone: "us-west-2b",
});

// Create an Internet Gateway
const igw = new aws.ec2.InternetGateway("igw", {
    vpcId: vpc.id,
});

// Create a Route Table
const routeTable = new aws.ec2.RouteTable("routeTable", {
    vpcId: vpc.id,
    routes: [
        { cidrBlock: "0.0.0.0/0", gatewayId: igw.id },
        { ipv6CidrBlock: "::/0", gatewayId: igw.id },
    ],
});

// Associate the Route Table with the subnets
new aws.ec2.RouteTableAssociation("subnet1RouteTableAssoc", {
    subnetId: subnet1.id,
    routeTableId: routeTable.id,
});

new aws.ec2.RouteTableAssociation("subnet2RouteTableAssoc", {
    subnetId: subnet2.id,
    routeTableId: routeTable.id,
});

// Create an EKS Cluster
const eksCluster = new aws.eks.Cluster("eksCluster", {
    roleArn: "arn:aws:iam::123456789012:role/EKSClusterRole",
    vpcConfig: {
        subnetIds: [subnet1.id, subnet2.id],
    },
    version: "1.21",
    enabledClusterLogTypes: ["api", "audit", "authenticator"],
    kubernetesNetworkConfig: {
        ipFamily: "ipv6",
    },
});

// Create a Node Group
const nodeGroup = new aws.eks.NodeGroup("nodeGroup", {
    clusterName: eksCluster.name,
    nodeRoleArn: "arn:aws:iam::123456789012:role/EKSNodeRole",
    subnetIds: [subnet1.id, subnet2.id],
    scalingConfig: {
        desiredSize: 2,
        maxSize: 3,
        minSize: 1,
    },
    instanceTypes: ["t3.medium"],
    amiType: "AL2_x86_64",
});

// Deploy the Amazon VPC CNI plugin
const vpcCniAddon = new aws.eks.Addon("vpcCniAddon", {
    clusterName: eksCluster.name,
    addonName: "vpc-cni",
    addonVersion: "v1.9.0-eksbuild.1",
    resolveConflicts: "OVERWRITE",
    configurationValues: JSON.stringify({
        enableIpv6: true,
    }),
});

export const vpcId = vpc.id;
export const eksClusterName = eksCluster.name;
export const eksClusterEndpoint = eksCluster.endpoint;
export const eksClusterArn = eksCluster.arn;
export const nodeGroupArn = nodeGroup.arn;