Deploy the airports-postgres helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy a Helm chart on Kubernetes using Pulumi, we'll be using the `kubernetes.helm.v3.Chart` resource from the Kubernetes provider. This resource is used to create and manage Helm chart resources in a Kubernetes cluster.

The `Chart` resource requires a chart name and, optionally, chart values, repository, and namespace among other settings. If your Helm chart has dependencies on other packages in a chart repository, you may need to add a repository URL. For the `airports-postgres` Helm chart, you would need to specify the chart's repository and any configuration parameters you wish to customize through chart values.

Below is a TypeScript program that deploys the `airports-postgres` Helm chart on Kubernetes. The program assumes you have a Kubernetes cluster up and running and that Pulumi is configured to communicate with your cluster.

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

// Create a new Helm Chart for the airports-postgres deployment
const airportsPostgresChart = new k8s.helm.v3.Chart('airports-postgres', {
    // Replace with the actual repository if it's different
    repo: 'my-helm-charts', 
    chart: 'airports-postgres',
    // Specify the namespace where the chart should be deployed.
    namespace: 'default',
    // Values to provide to the Helm chart
    values: {
        // You might have specific configuration like usernames, passwords, etc.
        // These should be replaced with your actual chart values.
        //
        // For example, if the airports-postgres Helm chart allows you to specify
        // a username and password for the Postgres database, you might have:
        // postgresql: {
        //   username: 'my-username',
        //   password: 'my-password'
        // }
    },
    // If your Helm chart needs specific versioning, you can specify the version as well.
    // version: '1.2.3',
});

// Export the Chart name
export const chartName = airportsPostgresChart.metadata.name;

```

In this program:
- We first import the `@pulumi/kubernetes` package which contains helpers to interact with Kubernetes resources.
- We create a new Helm chart instance using the `k8s.helm.v3.Chart` class. The first parameter of the constructor is a name for the Pulumi resource (`airports-postgres`).
- We specify the Helm chart details in the second parameter. This includes the repository's name where the Helm chart is located (replace `my-helm-charts` with the actual repository name), the chart name `airports-postgres`, and the Kubernetes namespace where the Helm chart will be deployed (`default` is used here). You should update these to match your actual Helm chart details.
- We provide an empty `values` object, where you can put all the necessary configurations for your Helm chart. For every Helm chart, the set of configurable values might differ. You should refer to the `airports-postgres` Helm chart's `values.yaml` file for the exact set of values you can configure.

For more information on deploying Helm charts with Pulumi, please refer to the [Pulumi documentation for Helm charts](https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm/v3/chart/).