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The official CLI for Amazon EKS

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eksctl - The official CLI for Amazon EKS

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eksctl is a simple CLI tool for creating clusters on EKS - Amazon's new managed Kubernetes service for EC2. It is written in Go, and uses CloudFormation.

You can create a cluster in minutes with just one command – eksctl create cluster!

Gophers: E, K, S, C, T, & L

Need help? Join Weave Community Slack.

Installation

To download the latest release, run:

curl --silent --location "https://github.com/weaveworks/eksctl/releases/download/latest_release/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp
sudo mv /tmp/eksctl /usr/local/bin

Alternatively, macOS users can use Homebrew:

brew tap weaveworks/tap
brew install weaveworks/tap/eksctl

and Windows users can use chocolatey:

chocolatey install eksctl

You will need to have AWS API credentials configured. What works for AWS CLI or any other tools (kops, Terraform etc), should be sufficient. You can use ~/.aws/credentials file or environment variables. For more information read AWS documentation.

You will also need AWS IAM Authenticator for Kubernetes command (either aws-iam-authenticator or aws eks get-token (available in version 1.16.156 or greater of AWS CLI) in your PATH.

Basic usage

To create a basic cluster, run:

eksctl create cluster

A cluster will be created with default parameters

  • exciting auto-generated name, e.g. "fabulous-mushroom-1527688624"
  • 2x m5.large nodes (this instance type suits most common use-cases, and is good value for money)
  • use official AWS EKS AMI
  • us-west-2 region
  • dedicated VPC (check your quotas)
  • using static AMI resolver

Once you have created a cluster, you will find that cluster credentials were added in ~/.kube/config. If you have kubectl v1.10.x as well as aws-iam-authenticator commands in your PATH, you should be able to use kubectl. You will need to make sure to use the same AWS API credentials for this also. Check EKS docs for instructions. If you installed eksctl via Homebrew, you should have all of these dependencies installed already.

Example output:

$ eksctl create cluster
[ℹ]  using region us-west-2
[ℹ]  setting availability zones to [us-west-2a us-west-2c us-west-2b]
[ℹ]  subnets for us-west-2a - public:192.168.0.0/19 private:192.168.96.0/19
[ℹ]  subnets for us-west-2c - public:192.168.32.0/19 private:192.168.128.0/19
[ℹ]  subnets for us-west-2b - public:192.168.64.0/19 private:192.168.160.0/19
[ℹ]  nodegroup "ng-98b3b83a" will use "ami-05ecac759c81e0b0c" [AmazonLinux2/1.11]
[ℹ]  creating EKS cluster "floral-unicorn-1540567338" in "us-west-2" region
[ℹ]  will create 2 separate CloudFormation stacks for cluster itself and the initial nodegroup
[ℹ]  if you encounter any issues, check CloudFormation console or try 'eksctl utils describe-stacks --region=us-west-2 --name=floral-unicorn-1540567338'
[ℹ]  2 sequential tasks: { create cluster control plane "floral-unicorn-1540567338", create nodegroup "ng-98b3b83a" }
[ℹ]  building cluster stack "eksctl-floral-unicorn-1540567338-cluster"
[ℹ]  deploying stack "eksctl-floral-unicorn-1540567338-cluster"
[ℹ]  building nodegroup stack "eksctl-floral-unicorn-1540567338-nodegroup-ng-98b3b83a"
[ℹ]  --nodes-min=2 was set automatically for nodegroup ng-98b3b83a
[ℹ]  --nodes-max=2 was set automatically for nodegroup ng-98b3b83a
[ℹ]  deploying stack "eksctl-floral-unicorn-1540567338-nodegroup-ng-98b3b83a"
[✔]  all EKS cluster resource for "floral-unicorn-1540567338" had been created
[✔]  saved kubeconfig as "~/.kube/config"
[ℹ]  adding role "arn:aws:iam::376248598259:role/eksctl-ridiculous-sculpture-15547-NodeInstanceRole-1F3IHNVD03Z74" to auth ConfigMap
[ℹ]  nodegroup "ng-98b3b83a" has 1 node(s)
[ℹ]  node "ip-192-168-64-220.us-west-2.compute.internal" is not ready
[ℹ]  waiting for at least 2 node(s) to become ready in "ng-98b3b83a"
[ℹ]  nodegroup "ng-98b3b83a" has 2 node(s)
[ℹ]  node "ip-192-168-64-220.us-west-2.compute.internal" is ready
[ℹ]  node "ip-192-168-8-135.us-west-2.compute.internal" is ready
[ℹ]  kubectl command should work with "~/.kube/config", try 'kubectl get nodes'
[✔]  EKS cluster "floral-unicorn-1540567338" in "us-west-2" region is ready
$

Install eksctl following the installation instructions.

To learn more abut what eksctl can do check eksctl.io. A good place to start is Getting Started. The full list of features can be found here.

Contributions

Code contributions are very welcome. If you are interested in helping make eksctl great then see our contributing guide. Or join the discussion on our mailing list.

Releases

Minor releases of eksctl should be expected every two weeks and patch releases will be made available as needed.

One or more release candidate(s) (RC) builds will be made available prior to each minor release. RC builds are intended only for testing purposes.

Get in touch

Create an issue, or login to Weave Community Slack (#eksctl) (signup).

Logo Credits

Original Gophers drawn by Ashley McNamara, unique E, K, S, C, T & L Gopher identities had been produced with Gopherize.me.

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