kor

Utils

Updated on August 1

Kor Overview

Secure your stack with a hardened Kor image freshly-built by Minimus. Minimus images always include the most up-to-date package version for all packages and dependencies contained in the image.

Kor (short for Kubernetes Orphaned Resources) is a command-line tool used to discover and clean up unused Kubernetes (k8s) objects. Kor helps teams clean up orphaned resources to reduce clutter and unnecessary attack surface.

Try It Out

For a quick test, print the help menu:

docker run --rm reg.mini.dev/kor --help

Prerequisites

A running Kubernetes cluster, with a kubeconfig file for that cluster available locally

Scan a cluster for unused resources

Mount your kubeconfig into the container and scan every supported resource type:

docker run --rm \
  -v $HOME/.kube/config:/root/.kube/config:ro \
  reg.mini.dev/kor all

Add --output json to get the results as JSON, or scan a single resource type instead of everything:

docker run --rm \
  -v $HOME/.kube/config:/root/.kube/config:ro \
  reg.mini.dev/kor configmap --output json

Technical Considerations

The Kor image provided by Minimus is a slim, security-hardened alternative to the public image from Docker Hub. The images are largely interchangeable, with a few differences as noted below.

Kor built by Minimus:

Runs as root to support required functions in alignment with the public image.
Drill down on the version specification tab to see the default user, listening ports, entrypoint, volumes, environment variables, etc.

The Payoff

A hardened, minimal image that will remain more secure for the long run and accrue vulnerabilities at a slower rate.

See the risk reduction dashboard for a detailed CVE comparison over the past 30 days.
Review the compliance report to see the default hardening and security configurations for the image.

Terms & Info

Trademark

This catalog is published by Minimus. All product names, logos, and marks, other than those belonging to Minimus, shown are owned by their respective rights holders and appear here only to identify the open source software each image contains. Minimus claims no ownership of those marks and implies no affiliation with, endorsement by, certification by, or sponsorship by any rights holder.

Disclaimer

Images are provided "as-is" without warranty of any kind. "Hardened" refers to the security configuration applied at the time of build and does not constitute a guarantee of ongoing security or absence of vulnerabilities. The free tier is provided without support, SLA, or guaranteed patching timelines. Security updates may be applied to paid subscriptions before or instead of free tier images. By pulling or using any image you agree to our Terms of Use.