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https://github.com/rru-ninety1/scheduler-operator

Kubernetes operator to schedule Deployment and StatefulSet replica counts
https://github.com/rru-ninety1/scheduler-operator

go k8s kubebuilder kubernetes operator-sdk

Last synced: 9 months ago
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Kubernetes operator to schedule Deployment and StatefulSet replica counts

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# scheduler-operator
Kubernetes operator to schedule Deployment and StatefulSet replica counts.

## Description
This project is a Kubernetes operator that allows you to schedule the scaling up or down of Deployments and StatefulSets.

## Getting Started

### Prerequisites
- go version v1.20.0+
- docker version 17.03+.
- kubectl version v1.11.3+.
- Access to a Kubernetes v1.11.3+ cluster.

### To Deploy on the cluster
**Build and push your image to the location specified by `IMG`:**

```sh
make docker-build docker-push IMG=/scheduler-operator:tag
```

**NOTE:** This image ought to be published in the personal registry you specified.
And it is required to have access to pull the image from the working environment.
Make sure you have the proper permission to the registry if the above commands don’t work.

**Install the CRDs into the cluster:**

```sh
make install
```

**Deploy the Manager to the cluster with the image specified by `IMG`:**

```sh
make deploy IMG=/scheduler-operator:tag
```

> **NOTE**: If you encounter RBAC errors, you may need to grant yourself cluster-admin
privileges or be logged in as admin.

**Create instances of your solution**
You can apply the samples (examples) from the config/sample:

```sh
kubectl apply -k config/samples/
```

>**NOTE**: Ensure that the samples has default values to test it out.

### To Uninstall
**Delete the instances (CRs) from the cluster:**

```sh
kubectl delete -k config/samples/
```

**Delete the APIs(CRDs) from the cluster:**

```sh
make uninstall
```

**UnDeploy the controller from the cluster:**

```sh
make undeploy
```

### Test with KIND

Generate manifest
```sh
make manifests

Create cluster
```sh
kind create cluster
```

Install CRD
```sh
make install
```

Instal nginx example deployment
```sh
kubectl apply -f config/samples/nginx_deployment.yaml
```

Run operator locally
```sh
make run
```

Apply CR
```sh
kubectl apply -f config/samples/crd_v1alpha1_schedulation.yaml
kubectl describe Schedulation example-schedulation
```

Delete CR
```sh
kubectl delete Schedulation example-schedulation
```

Delete CRD
```sh
make uninstall
```

Delete cluster
```sh
kind delete cluster
```

## Contributing
// TODO(user): Add detailed information on how you would like others to contribute to this project

**NOTE:** Run `make help` for more information on all potential `make` targets

More information can be found via the [Kubebuilder Documentation](https://book.kubebuilder.io/introduction.html)

## License

Copyright 2024.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.