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Overview

This repository contains example Kubernetes applications ("apps") that meet the requirements for integration with Google Cloud Marketplace. For a complete description of those requirements, see the technical onboarding guide. TODO: add link

The related marketplace-k8s-app-tools repository contains utilities for testing the integration of an app with Marketplace, including a test harness for simulating UI-based deployment. The repository is submoduled under /vendor/marketplace-tools.

Getting started

Updating git submodules

You can run the following commands to make sure submodules are populated with proper code.

git submodule sync --recursive
git submodule update --recursive --init --force

Setting up your cluster and environment

See Getting Started

Installing WordPress

Run the following commands from within wordpress folder.

Run app/doctor to determine any necessary setup steps for the cluster:

make app/doctor

Build and install WordPress onto your cluster:

export REPORTING_SECRET=gs://cloud-marketplace-tools/reporting_secrets/fake_reporting_secret.yaml
make app/install

This will build the containers and install the application. Note that the reporting secret installed for usage reporting is structurally correct, but the keys are fake. Usage reports will fail.

To delete the installation, run:

make app/uninstall

Overriding context values (Optional)

By default make derives docker registry and k8s namespace from your local configurations of gcloud and kubectl.

You can see these values using

kubectl config view

If you want to use values that differ from the local context of gcloud and kubectl, you can override them by exporting the appropriate environment variables:

export REGISTRY=gcr.io/your-registry
export NAMESPACE=your-namespace
export APP_INSTANCE_NAME=your-installation-name
export APP_TAG=your-tag

Marketplace Integration Requirements

Briefly, apps must support two modes of installation:

  • CLI: via a Kubernetes client tool like kubectl or helm
  • Marketplace UI: via the deployment container ("deployer") mechanism.

A few additional Marketplace requirements are described below.

Application resource and controller

Apps must supply an Application resource conforming to the Kubernetes community proposal. The proposal describes the Application resource, as well as a corresponding controller that would be responsible for application-generic functionality such as assigning owner references to application components.

Temporary Note: the public source repository associated with the proposal is not yet available. In the interim, we have an equivalent CRD and controller in the marketplace-k8s-app-tools repository. Expect changes once the public repo is available.

Deployer

Apps must supply a deployment container image ("deployer") which is used in UI-based deployment. This image should extend from one of the base images provided in the marketplace-k8s-app-tools repository.

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