Deploy the servicemesh-k8ssandra-resource helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy a Helm chart on a Kubernetes cluster using Pulumi, we need to use the `Chart` resource from the `@pulumi/kubernetes` package, which allows you to deploy Helm charts into a Kubernetes cluster.

Below is a TypeScript program that demonstrates how to deploy the `servicemesh-k8ssandra-resource` Helm chart. The program assumes that you have a Kubernetes cluster already configured and accessible via `kubectl` on your local machine, and that you have Pulumi installed and configured for TypeScript.

First, you'll need to import the necessary Pulumi and Kubernetes packages:

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

Then, you'll use the `Chart` resource to deploy the specified Helm chart. You'll need to specify the chart name and set any configurable values in the `values` parameter. For this chart, you would need to find out what values are configurable by consulting the chart's documentation. For demonstrative purposes, I'll include a few fictional values:

```typescript
const servicemeshK8ssandraChart = new k8s.helm.v3.Chart("servicemesh-k8ssandra-chart", {
    chart: "servicemesh-k8ssandra-resource",
    // Replace with the repository where your Helm chart is located
    // If your Helm chart is from an official repository, just specify the chart name and version
    // repo: "http://myhelmrepo.org/charts",
    version: "1.0.0", // Replace with the specific version of the chart you want to deploy
    namespace: "default", // Specify the namespace where you want to deploy the chart. Change if needed.
    values: {
        // Specify any default values that you want for your chart.
        // These are just example values. Update these to reflect the values needed for your specific chart.
        adminUser: {
            username: "admin",
            password: "password",
        },
        persistence: {
            enabled: true,
            storageClass: "standard", // Specify your StorageClass
            size: "10Gi",
        },
    },
});
```

You would then execute this Pulumi program, which would deploy the specified Helm chart into your Kubernetes cluster in the `default` namespace, with the specified values. Make sure the values match those expected by the Helm chart for proper configuration.

It's essential to consult the documentation for the specific chart you're deploying to understand the available options and their correct values. Helm charts vary widely in the parameters they accept and the customization they support.

Here is the full Pulumi program:

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

// Deploy the Helm chart `servicemesh-k8ssandra-resource`.
const servicemeshK8ssandraChart = new k8s.helm.v3.Chart("servicemesh-k8ssandra-chart", {
    chart: "servicemesh-k8ssandra-resource",
    // Uncomment below if the Helm chart is located in a custom Helm repository. Provide the repository URL.
    // repo: "http://myhelmrepo.org/charts",
    version: "1.0.0", // Replace with the specific version number for the Helm chart.
    namespace: "default", // Change this if you wish to install the chart in a different namespace.
    values: {
        // The `values` field is used to set the configurable values supported by this Helm chart.
        // Below is an example configuration, which you need to adjust to match your chart requirements.
        adminUser: {
            username: "admin",
            password: "password",
        },
        persistence: {
            enabled: true,
            storageClass: "standard", // Specify the Kubernetes StorageClass for persistent storage.
            size: "10Gi",
        },
        // Add more configuration values as needed for your Helm chart.
    },
});

// Export the public Service endpoint for the deployed chart (if applicable)
export const serviceEndpoint = servicemeshK8ssandraChart.getResourceProperty("v1/Service", "servicemesh-k8ssandra-service", "status").apply(status => status.loadBalancer.ingress[0]);
```

To apply this program and deploy the Helm chart:

1. Save the code into a file named `index.ts`.
2. Ensure you have the Pulumi CLI installed and have authenticated with your Kubernetes cluster.
3. Run `pulumi up` in the directory containing your `index.ts` to initiate the deployment.
4. Pulumi will preview the changes and prompt for confirmation before making any changes to your cluster.
5. Once confirmed, Pulumi will apply the changes and deploy your Helm chart.

Remember to replace the `version` and `values` fields with the correct information for the `servicemesh-k8ssandra-resource` Helm chart you are deploying. Also, if the Helm chart is in a private repository, you may need to configure access to that repository.