realgaurav/addon-controller

Sveltos Kubernetes add-on controller programmatically deploys add-ons in tens of clusters. Support for ClusterAPI powered clusters, Helm charts, kustomize ,YAMLs. Sveltos has built-in support for multi-tenancy.

Sveltos: Kubernetes add-on controller

Useful links

• Projectsveltos documentation
• Quick Start

What is the Projectsveltos?

Projectsveltos is mainly a Kubernetes add-on controller that simplifies the deployment and management of add-ons in Kubernetes clusters. With Sveltos controller, you can easily automate the deployment process and ensure consistency across your cluster environment.

Addon deployment: how it works

The idea is simple:

1. from the management cluster, selects one or more clusters with a Kubernetes label selector;
2. lists which addons need to be deployed on such clusters.

where term:

1. clusters represents both CAPI cluster or any other Kubernetes cluster registered with Sveltos;
2. addons represents either an helm release, Kubernetes resource YAMLs or kustomize resources.

Here is an example of how to require that any CAPI Cluster with label env: prod has following features deployed:

1. Kyverno helm chart (version v2.6.0)
2. kubernetes resource(s) contained in the referenced Secret: default/storage-class
3. kubernetes resource(s) contained in the referenced ConfigMap: default/contour.

apiVersion: config.projectsveltos.io/v1alpha1
kind: ClusterProfile
metadata:
  name: deploy-kyverno
spec:
  clusterSelector: env=prod
  syncMode: Continuous
  helmCharts:
  - repositoryURL:    https://kyverno.github.io/kyverno/
    repositoryName:   kyverno
    chartName:        kyverno/kyverno
    chartVersion:     v3.0.1
    releaseName:      kyverno-latest
    releaseNamespace: kyverno
    helmChartAction:  Install
    values: |
      admissionController:
        replicas: 3
  policyRefs:
  - name: storage-class
    namespace: default
    kind: Secret
  - name: contour-gateway
    namespace: default
    kind: ConfigMap

As soon as a cluster is a match for above ClusterProfile instance, all referenced features are automatically deployed in such cluster.

Here is an example using Kustomize:

apiVersion: config.projectsveltos.io/v1alpha1
kind: ClusterProfile
metadata:
  name: flux-system
spec:
  clusterSelector: env=fv
  syncMode: Continuous
  kustomizationRefs:
  - namespace: flux-system
    name: flux-system
    kind: GitRepository
    path: ./helloWorld/
    targetNamespace: eng

where GitRepository synced with Flux contains following resources:

├── deployment.yaml
├── kustomization.yaml
└── service.yaml
└── configmap.yaml

Refer to examples for more complex examples.

Sveltos in action

To see the full demo, have a look at this youtube video

Contributing

❤️ Your contributions are always welcome! If you want to contribute, have questions, noticed any bug or want to get the latest project news, you can connect with us in the following ways:

1. Read contributing guidelines
2. Open a bug/feature enhancement on github
3. Chat with us on the Slack in the #projectsveltos channel
4. Contact Us

License

Copyright 2022.

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.