Introduction

Getting started¶

Basic cluster creation¶

To create a basic cluster, but with a different name, run:

eksctl create cluster --name=cluster-1 --nodes=4

EKS supports versions 1.22, 1.23, 1.24, 1.25 (default), 1.26 and 1.27. With eksctl you can deploy any of the supported versions by passing --version.

eksctl create cluster --version=1.24

Listing clusters¶

To list the details about a cluster or all of the clusters, use:

eksctl get cluster [--name=<name>][--region=<region>]

Config-based creation¶

You can also create a cluster passing all configuration information in a file using --config-file:

eksctl create cluster --config-file=<path>

To create a cluster using a configuration file and skip creating nodegroups until later:

eksctl create cluster --config-file=<path> --without-nodegroup

Cluster credentials¶

To write cluster credentials to a file other than default, run:

eksctl create cluster --name=cluster-2 --nodes=4 --kubeconfig=./kubeconfig.cluster-2.yaml

To prevent storing cluster credentials locally, run:

eksctl create cluster --name=cluster-3 --nodes=4 --write-kubeconfig=false

To let eksctl manage cluster credentials under ~/.kube/eksctl/clusters directory, run:

eksctl create cluster --name=cluster-3 --nodes=4 --auto-kubeconfig

To obtain cluster credentials at any point in time, run:

eksctl utils write-kubeconfig --cluster=<name> [--kubeconfig=<path>][--set-kubeconfig-context=<bool>]

Caching Credentials¶

eksctl supports caching credentials. This is useful when using MFA and not wanting to continuously enter the MFA token on each eksctl command run.

To enable credential caching set the following environment property EKSCTL_ENABLE_CREDENTIAL_CACHE as such:

export EKSCTL_ENABLE_CREDENTIAL_CACHE=1

By default, this will result in a cache file under ~/.eksctl/cache/credentials.yaml which will contain creds per profile that is being used. To clear the cache, delete this file.

It's also possible to configure the location of this cache file using EKSCTL_CREDENTIAL_CACHE_FILENAME which should be the full path to a file in which to store the cached credentials. These are credentials, so make sure the access of this file is restricted to the current user and in a secure location.

Autoscaling¶

To use a 3-5 node Auto Scaling Group, run:

eksctl create cluster --name=cluster-5 --nodes-min=3 --nodes-max=5

SSH access¶

In order to allow SSH access to nodes, eksctl imports ~/.ssh/id_rsa.pub by default, to use a different SSH public key, e.g. my_eks_node_id.pub, run:

eksctl create cluster --ssh-access --ssh-public-key=my_eks_node_id.pub

To use a pre-existing EC2 key pair in us-east-1 region, you can specify key pair name (which must not resolve to a local file path), e.g. to use my_kubernetes_key run:

eksctl create cluster --ssh-access --ssh-public-key=my_kubernetes_key --region=us-east-1

AWS Systems Manager (SSM) is enabled by default, so it can be used to SSH onto nodes.

eksctl create cluster --enable-ssm

Tagging¶

To add custom tags for all resources, use --tags.

eksctl create cluster --tags environment=staging --region=us-east-1

Volume size¶

To configure node root volume, use the --node-volume-size (and optionally --node-volume-type), e.g.:

eksctl create cluster --node-volume-size=50 --node-volume-type=io1

Deletion¶

To delete a cluster, run:

eksctl delete cluster --name=<name> [--region=<region>]

Contributions¶

Code contributions are very welcome. If you are interested in helping make eksctl great then see our contributing guide.

Need help? Join Weave Community Slack.

Installation¶

eksctl is available to install from official releases as described below. We recommend that you install eksctl from only the official GitHub releases. You may opt to use a third-party installer, but please be advised that AWS does not maintain nor support these methods of installation. Use them at your own discretion.

Prerequisite¶

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.

The IAM account used for EKS cluster creation should have these minimal access levels.

For Unix¶

To download the latest release, run:

# for ARM systems, set ARCH to: `arm64`, `armv6` or `armv7`
ARCH=amd64
PLATFORM=$(uname -s)_$ARCH

curl -sLO "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$PLATFORM.tar.gz"

# (Optional) Verify checksum
curl -sL "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_checksums.txt" | grep $PLATFORM | sha256sum --check

tar -xzf eksctl_$PLATFORM.tar.gz -C /tmp && rm eksctl_$PLATFORM.tar.gz

sudo mv /tmp/eksctl /usr/local/bin

For Windows¶

Direct download (latest release): AMD64/x86_64 - ARMv6 - ARMv7 - ARM64¶

Make sure to unzip the archive to a folder in the PATH variable.

Optionally, verify the checksum:

1. Download the checksum file: latest
2. Use Command Prompt to manually compare CertUtil's output to the checksum file downloaded.

   REM Replace amd64 with armv6, armv7 or arm64
   CertUtil -hashfile eksctl_Windows_amd64.zip SHA256
   

3. Using PowerShell to automate the verification using the -eq operator to get a True or False result:

   # Replace amd64 with armv6, armv7 or arm64
    (Get-FileHash -Algorithm SHA256 .\eksctl_Windows_amd64.zip).Hash -eq ((Get-Content .\eksctl_checksums.txt) -match 'eksctl_Windows_amd64.zip' -split ' ')[0]
    ```
   
   #### Using Git Bash: 
   ```sh
   # for ARM systems, set ARCH to: `arm64`, `armv6` or `armv7`
   ARCH=amd64
   PLATFORM=windows_$ARCH
   
   curl -sLO "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$PLATFORM.zip"
   
   # (Optional) Verify checksum
   curl -sL "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_checksums.txt" | grep $PLATFORM | sha256sum --check
   
   unzip eksctl_$PLATFORM.zip -d $HOME/bin
   
   rm eksctl_$PLATFORM.zip
   

The eksctl executable is placed in $HOME/bin, which is in $PATH from Git Bash.

Docker¶

For every release and RC, a docker image is pushed to weaveworks/eksctl - Docker Image | Docker Hub.

Third-Party Installers (Not Recommended)¶

For MacOS¶

Homebrew

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

MacPorts

port install eksctl

For Windows¶

Chocolatey

chocolatey install eksctl

Scoop

scoop install eksctl

Shell Completion¶

Bash¶

To enable bash completion, run the following, or put it in ~/.bashrc or ~/.profile:

. <(eksctl completion bash)

Zsh¶

For zsh completion, please run:

mkdir -p ~/.zsh/completion/
eksctl completion zsh > ~/.zsh/completion/_eksctl

and put the following in ~/.zshrc:

fpath=($fpath ~/.zsh/completion)

Note if you're not running a distribution like oh-my-zsh you may first have to enable autocompletion (and put in ~/.zshrc to make it persistent):

autoload -U compinit
compinit

Fish¶

The below commands can be used for fish auto completion:

mkdir -p ~/.config/fish/completions
eksctl completion fish > ~/.config/fish/completions/eksctl.fish

Powershell¶

The below command can be referred for setting it up. Please note that the path might be different depending on your system settings.

eksctl completion powershell > C:\Users\Documents\WindowsPowerShell\Scripts\eksctl.ps1

Features¶

The features that are currently implemented are:

• Create, get, list and delete clusters
• Create, drain and delete nodegroups
• Scale a nodegroup
• Update a cluster
• Use custom AMIs
• Configure VPC Networking
• Configure access to API endpoints
• Support for GPU nodegroups
• Spot instances and mixed instances
• IAM Management and Add-on Policies
• List cluster Cloudformation stacks
• Install coredns
• Write kubeconfig file for a cluster