preflight-checker-cli-for-eks-auto-mode 0.1.0

Preflight Checker CLI for EKS Auto Mode - assess cluster readiness for migration

EKS Auto Mode Preflight Checker CLI

A comprehensive command-line tool designed to assess your Amazon EKS cluster's readiness for migration to EKS Auto Mode. This tool performs automated compatibility checks across 11 key areas including Kubernetes version, IAM configurations, instance types, and workload compatibility to ensure a smooth transition to EKS Auto Mode's fully managed compute experience.

Features

• 11 Compatibility Checks: Version, IAM, instances, Windows nodes, SSH/SSM access, custom AMIs, user data, addons, autoscaling, identity, and load balancers
• Multiple Output Formats: Table, JSON, YAML, and HTML reports
• CI/CD Ready: Proper exit codes for automation
• Selective Testing: Run specific checks or all checks

AWS Permissions

Required IAM permissions:

• eks:DescribeCluster, eks:ListNodegroups, eks:DescribeNodegroup
• eks:ListAddons, eks:DescribeAddon
• ec2:DescribeInstances, ec2:DescribeLaunchTemplateVersions
• autoscaling:DescribeAutoScalingGroups
• iam:ListAttachedRolePolicies, iam:GetRole

Installation

python3 -m venv /tmp/.venv
source /tmp/.venv/bin/activate
pip install preflight-checker-cli-for-eks-auto-mode
eks-automode-cli --version

Usage

# Basic check
eks-automode-cli check -c my-cluster --region us-east-1

# JSON output
eks-automode-cli check -c my-cluster --region us-east-1 --output json

# HTML report
eks-automode-cli check -c my-cluster --region us-east-1 --output html

# Run specific checks
eks-automode-cli check -c my-cluster --checks version,iam,instances

# Verbose output with recommendations
eks-automode-cli check -c my-cluster --region us-east-1 --verbose

# Quiet mode (exit codes only)
eks-automode-cli check -c my-cluster --region us-east-1 --quiet

# List available checks
eks-automode-cli list-checks

EKS Auto Mode Readiness Status

• Ready - Cluster is ready for EKS Auto Mode migration
• Requires Changes - Minor configurations needed before migration
• Not Ready - Critical blockers detected (e.g., custom AMIs)
• Error - Assessment could not be completed

Compatibility Checks

Check	Description
version	Kubernetes 1.29+ requirement
iam	Cluster role and Auto Mode policies
instances	Instance type compatibility
windows	Windows node detection
ssh	SSH/SSM access detection
amis	Custom AMI usage
userdata	Custom node bootstrapping
addons	Managed addons compatibility
autoscaling	Existing autoscaling detection
identity	IRSA v1 vs Pod Identity
loadbalancers	ALB and NLB detection

Output Examples

Table Output

Check         Status    Details
------------  --------  ----------------------------------
version       PASS      Kubernetes 1.29 supported
iam           PASS      All required policies attached
instances     FAIL      2 nano instances found
identity      WARN      Using IRSA v1 (OIDC)

JSON Output

{
  "cluster": "my-cluster",
  "overall_status": "REQUIRES_CHANGES",
  "checks": {
    "version": {"status": "PASS", "details": "Kubernetes 1.29 supported"},
    "instances": {"status": "FAIL", "details": "2 nano instances found"}
  }
}

Development

# Install from source
git clone <repository-url>
cd eks-automode-preflight-checker-cli
pip install -e .

Support & Feedback

This project is maintained by AWS Solution Architects. It is not part of an AWS service and support is provided best-effort by the maintainers. To post feedback, submit feature ideas, or report bugs, please use the Issues section of this repo. If you are interested in contributing, please see the Contribution guide.

License

Apache-2.0

Security

See Threat Model for security considerations.