guideKubernetes with Helm

The presented example uses Helm charts, if you haven’t used the tool before, we highly recommend getting familiar with the Helm quick-start docs.

The Helm chart setups the basic scenario of the CKEditor Collaboration Server On-Premises in Kubernetes with MySQL database and Redis cluster in two instances without the CKEditor Collaboration Worker.

# Prerequisites

Helm v3 and Kubernetes 1.19+ are required to run examples from the section.

To fetch a Git repository with a pre-configured Helm chart, git needs to be installed.

To fetch required docker images you will need to authorize to the CKEditor Collaboration Server On-Premises Docker Registry.
Please prepare the token from the CKEditor Ecosystem customer dashboard.

The presented example is not meant for production purposes! This configuration is insecure, not persistent and its purpose is testing only.

For production usage, please check the production deployment article

A valid license key is needed in order to install Collaboration Server On-Premises.
Contact us for a trial license key.

# Preparing development environment

  1. Clone the cksource/ckeditor-cs-on-premises-infrastructure Git repository.
git clone
  1. Go to the ckeditor-cs-development-stack directory.
cd ckeditor-cs-on-premises-infrastructure/kubernetes/helm/ckeditor-cs-development-stack
  1. Create imagePullSecret for pulling images from the CKEditor container registry, replace the xxx with the authentication token.
kubectl create secret docker-registry docker-cke-cs-com \
    --docker-username "cs" \
    --docker-server "" \
  1. Install all necessary dependencies. It will download all images needed in further tutorials.
helm repo add bitnami &&
helm repo update &&
helm dependency update

# Running the default scenario

The base scenario runs the application with a MySQL and single instance of Redis.

You will need to replace the xxx with your CKEditor Collaboration Server On-premises license key, which can be found in the CKEditor Ecosystem dashboard.

helm install ckeditor-cs . \

then expose the CKEditor Collaboration Server On-premises port

kubectl port-forward service/ckeditor-cs-server 8000

Note: This is not a production-ready solution. To expose the application to the public in a production environment use a proper proxy configuration.

# Deleting installation

The command below will stop and remove all pods which were started during the tutorial.

helm delete ckeditor-cs

# Customizing scenario

You can adjust the example configuration to your needs by modifying the values.yaml file in the .../kubernetes/helm/ckeditor-cs/ directory.