Deploy the ublhub helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the `ublhub` Helm chart on Kubernetes using Pulumi, we will use the `kubernetes.helm.v3.Chart` resource from the `@pulumi/kubernetes` package. This resource provides a way to deploy Helm charts to your Kubernetes cluster with Pulumi.

Before deploying the chart, ensure you have:

1. A Kubernetes cluster running and kubectl configured with the context of the cluster where you want to deploy the Helm chart.
2. The Helm CLI installed (optional, for chart repository addition purposes).
3. Pulumi CLI installed and you are logged into the Pulumi service.

Below is the Pulumi TypeScript program that performs the deployment of the Helm chart. The program defines a Kubernetes Helm chart resource, specifying the chart name, version (if applicable), and any necessary values that should be overridden in the default chart configuration. If `ublhub` is from a custom Helm repository, we would need to add it to the chart resource's configuration.

Here's how you can deploy the `ublhub` Helm chart:

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

// Create a Kubernetes Helm Chart resource that represents the ublhub Helm chart.
const ublhubChart = new k8s.helm.v3.Chart("ublhub-chart", {
    // If the Helm chart is located in a custom Helm repository, provide `repo` and `chart` properties:
    // repo: "https://charts.example.com/",
    // chart: "ublhub",

// If the ublhub chart is part of the stable repository that comes by default with Helm, specify the `chart` directly:
    chart: "ublhub",

// If you have a specific version of the chart to deploy, uncomment and update the `version` property:
    // version: "1.2.3",

// Include any custom values you want to override in the `values` property:
    // values: {
    //     key: "value",
    //     // ... other custom values ...
    // },

// Specify the Kubernetes namespace where the chart should be deployed.
    // If you don't specify this, it will default to the `default` namespace.
    namespace: "default",
});

// Export the name of the deployed chart in case you need to reference it later.
export const chartName = ublhubChart.metadata.apply(metadata => metadata.name);
```

Make sure to adjust the `chart`, `version`, and `values` properties according to the actual chart details of `ublhub`. The `values` property can contain any custom values you want to override in the chart's default configuration. If `ublhub` is from a custom repository, specify the `repo` URL. Always set `namespace` to the Kubernetes namespace where you want the chart to be deployed; if not set, it will default to `default`.

The `apply` method is used to extract the deployed chart name for exporting. This can be helpful for programmatic access to the chart after deployment.

Once your Pulumi program is set up, you can deploy it using the following commands:

```sh
pulumi up
```

This command will preview and perform the deployment. It will show you what resources will be created before actually provisioning them in your Kubernetes cluster.

Remember, if the `ublhub` Helm chart requires any configuration that is sensitive (like passwords or API keys), you should use [Pulumi secrets](https://www.pulumi.com/docs/intro/concepts/secrets/) to keep this data encrypted.

After running `pulumi up` and confirming the deployment, Pulumi will provision the `ublhub` Helm chart in the specified namespace on your Kubernetes cluster. You can check the status of your Helm release using standard Kubernetes tools like `kubectl` or by using Pulumi's stack output.