Using kubernetes helm.toolkit.fluxcd.io with minio.min.io

Question

Pulumi · Accepted Answer

To deploy a MinIO instance on a Kubernetes cluster using the Flux Helm operator (which is part of the toolkit provided by FluxCD), you would first need to have a Kubernetes cluster running and configured. The Flux Helm operator allows you to declaratively manage Helm chart releases with Kubernetes manifests.

You would define a HelmRelease resource that tells the Flux Helm operator how to deploy MinIO. Here's how you can define this setup using Pulumi and TypeScript:

1. **Kubernetes Cluster**: Make sure you've got a Kubernetes cluster and `kubeconfig` available.
2. **Flux Helm operator**: Install the Flux Helm operator in your cluster, which will manage Helm releases based on Kubernetes manifests.
3. **HelmRelease for MinIO**: Define a `HelmRelease` resource for the MinIO Helm chart.

Below is the Pulumi program which accomplishes the above points. This program makes use of the `@pulumi/kubernetes` package to manage Kubernetes resources:

```typescript
import * as k8s from '@pulumi/kubernetes';

// Create a Kubernetes Namespace for MinIO
const minioNamespace = new k8s.core.v1.Namespace('minio-namespace', {
    metadata: {
        name: 'minio'
    }
});

// Define the HelmRelease resource for MinIO
const minioHelmRelease = new k8s.apiextensions.CustomResource('minio-helm-release', {
    apiVersion: 'helm.toolkit.fluxcd.io/v2beta1',
    kind: 'HelmRelease',
    metadata: {
        namespace: minioNamespace.metadata.name,
    },
    spec: {
        chart: {
            spec: {
                // Specify the chart reference and version
                chart: 'minio',
                version: '8.0.10', // Use the version of MinIO Helm chart that you want to deploy
                sourceRef: {
                    kind: 'HelmRepository',
                    name: 'minio', // Ensure this matches the name of your repository added on Flux
                    namespace: 'flux-system' // Namespace where your HelmRepository resource is located
                }
            }
        },
        releaseName: 'minio',
        targetNamespace: minioNamespace.metadata.name,
        // Define values for the MinIO Helm chart.
        // These values should be aligned with the MinIO Helm chart's values.yaml file.
        values: {
            accessKey: 'YOUR_ACCESS_KEY', // Replace with your desired access key
            secretKey: 'YOUR_SECRET_KEY', // Replace with your desired secret key
            // Additional configuration can be added here as needed
        }
    }
}, { dependsOn: [minioNamespace] });

// Export the namespace name and release name
export const namespaceName = minioNamespace.metadata.name;
export const releaseName = minioHelmRelease.metadata.name;
```

*Note: The `values` specified in the `HelmRelease` should be set according to your needs and should correspond with the available settings in the MinIO Helm chart's `values.yaml`. Also, the `accessKey` and `secretKey` should be securely managed and not hardcoded as shown in this example for simplicity.*

In this Pulumi program, we set up a namespace for MinIO and a `HelmRelease` object that references a MinIO Helm chart. Pulumi understands the desired state you have described and makes the necessary calls to the Kubernetes API to apply these resources to your cluster.

For the `HelmRelease` to be properly managed, the Flux Helm operator needs to be installed in the cluster, and you must have added a `HelmRepository` referencing the location where the MinIO chart can be found. In this case, the sample assumes you've done this setup in a namespace called `flux-system`.

Pulumi uses the current context in your `kubeconfig` file to communicate with your cluster, so make sure you're pointing to the correct context if you're managing multiple clusters.

Finally, you can run `pulumi up` through the Pulumi CLI to deploy your MinIO instance using Flux on Kubernetes.