Deploy the istio-aws-private-ingress-customized helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy a customized Helm chart on Kubernetes, such as `istio-aws-private-ingress`, you would typically follow these steps:

1. Set up a Kubernetes cluster where you intend to deploy the Helm chart.
2. Configure `kubectl` and Pulumi to connect to your Kubernetes cluster.
3. Use Pulumi's `Chart` resource from the `@pulumi/kubernetes` package to deploy the Helm chart.
4. Use the `values` property to customize the Helm chart configuration.

Here's a Pulumi program written in TypeScript that demonstrates these steps. This program assumes you have an existing Kubernetes cluster and your `kubeconfig` file is set up correctly to connect to it.

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

// Create a new instance of the Helm chart for istio-aws-private-ingress.
// Make sure to configure the `repo` and `chart` properties according to the location of your Helm chart repository.
const istioAwsPrivateIngress = new k8s.helm.v3.Chart('istio-aws-private-ingress', {
    // The chart can be fetched from the Helm repository, which you need to specify.
    repo: "exampleRepository", // Replace with the name of the repo where your chart is located.
    chart: "istio-aws-private-ingress", // Name of the chart in the repository.
    // If you have custom values you'd like to override in the chart, specify them here.
    // The following is just an example and should be replaced with actual values relevant to the istio-aws-private-ingress chart.
    values: {
        // Example of custom values to configure istio-aws-private-ingress
        global: {
            istioNamespace: 'istio-system',
        },
        ingress: {
            awsPrivate: true,
        },
        // Add any other custom configuration that Istio or any AWS ingress settings might require.
        // Each Helm chart has its own set of configurable values, which are usually documented by the chart maintainer.
    },
    // Specify the namespace where you want to install your Helm chart. If the namespace doesn't exist, Pulumi will create it.
    namespace: 'istio-system', // Ensure this namespace matches the one expected by the chart.
});

// Export the URL of the Istio ingress to access it externally.
// You may need to customize this export based on how your particular Helm chart exposes its services.
export const ingressUrl = istioAwsPrivateIngress.getResourceProperty('v1/Service', 'istio-ingressgateway', 'status');
```

In this code:

- We import the `@pulumi/kubernetes` package, which contains helpers for deploying resources to a Kubernetes cluster.
- `k8s.helm.v3.Chart` represents a Helm chart deployment. The parameters we pass include the chart name, repository, and any custom values we want to apply to the chart.
- The `values` field within the chart is used to customize the deployment. Helm charts come with default values, but you typically override some of these to tailor the deployment to your needs. You would look at the `values.yaml` file that usually accompanies a Helm chart or its documentation to understand what values can be set.
- The `namespace` field is where you define which Kubernetes namespace you want the resources to be deployed in. If the namespace isn't already present, Pulumi will create it for you.
- The `export` statement is Pulumi's way of outputting important information after deploying the resources. In this case, we are assuming that the Helm chart creates a Kubernetes Service for the Istio ingress gateway, and we're exporting its status URL.

Please note that the actual values and configurations may vary depending on the specifics of the Helm chart and the setup you desire. Always refer to the official documentation of the Helm chart you are deploying for the correct and up-to-date configuration options.