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Showing content from https://sdk.operatorframework.io/docs/building-operators/helm/quickstart below:

Quickstart for Helm-based Operators | Operator SDK

A simple set of instructions to set up and run a Helm-based operator.

This guide walks through an example of building a simple nginx-operator powered by Helm using tools and libraries provided by the Operator SDK.

• Go through the installation guide.
• Make sure your user is authorized with cluster-admin permissions.
• An accessible image registry for various operator images (ex. hub.docker.com, quay.io) and be logged in to your command line environment.
  • example.com is used as the registry Docker Hub namespace in these examples. Replace it with another value if using a different registry or namespace.
  • Authentication and certificates if the registry is private or uses a custom CA.

1. Create a project directory for your project and initialize the project:

mkdir nginx-operator
cd nginx-operator
operator-sdk init --domain example.com --plugins helm

1. Create a simple nginx API using Helm’s built-in chart boilerplate (from helm create):

operator-sdk create api --group demo --version v1alpha1 --kind Nginx

1. Build and push your operator’s image:

make docker-build docker-push IMG="example.com/nginx-operator:v0.0.1"

1. Install OLM:

1. Bundle your operator, then build and push the bundle image (defaults to example.com/nginx-operator-bundle:v0.0.1):

make bundle IMG="example.com/nginx-operator:v0.0.1"
make bundle-build bundle-push IMG="example.com/nginx-operator:v0.0.1"

1. Run your bundle. If your bundle image is hosted in a registry that is private and/or has a custom CA, these configuration steps must be complete.

operator-sdk run bundle example.com/nginx-operator-bundle:v0.0.1

1. Create a sample Nginx custom resource:

$ kubectl apply -f config/samples/demo_v1alpha1_nginx.yaml
nginx.demo.example.com/nginx-sample created

1. Uninstall the operator:

operator-sdk cleanup nginx-operator

1. Deploy your operator:

make deploy IMG="example.com/nginx-operator:v0.0.1"

1. Create a sample Nginx custom resource:

$ kubectl apply -f config/samples/demo_v1alpha1_nginx.yaml
nginx.demo.example.com/nginx-sample created

1. Uninstall the operator:

Read the full tutorial for an in-depth walkthrough of building a Helm operator.

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