Deploy the generic-ingress helm chart on Rancher

Question

Pulumi · Accepted Answer

To deploy a Helm chart on Rancher using Pulumi, you would typically use the Pulumi Rancher2 provider. This allows you to interact with Rancher Kubernetes clusters and deploy Helm charts as part of your infrastructure.

Below you'll find a Pulumi program that demonstrates how to deploy the "generic-ingress" Helm chart within a Rancher-managed Kubernetes cluster. This is assuming that you have a Rancher cluster up and running and have access to it.

First, you need to install the `@pulumi/rancher2` package if you haven't already. You can do this by running `npm install @pulumi/rancher2`.

Here's how the Pulumi TypeScript program would look for deploying a generic ingress Helm chart on a Rancher cluster:

```typescript
import * as rancher2 from "@pulumi/rancher2";

// Instantiate a Rancher2 provider to interact with your Rancher instance.
// The provider will use the configuration from the default kubeconfig file to authenticate.
const rancherProvider = new rancher2.Provider("rancher", {});

// Ensure your namespace exists on the cluster where you wish to deploy the Helm chart.
const namespace = new rancher2.Namespace("ingress-namespace", {
    name: "ingress-namespace",
});

// Deploy the generic-ingress Helm chart using the rancher2.AppV2 resource.
// You must provide the name of the chart, the namespace, and any values you want to override in the chart.
const ingressApp = new rancher2.AppV2("generic-ingress-app", {
    name: "generic-ingress",
    namespace: namespace.name,
    repoName: "helm-repo-name", // Replace with your Helm chart repository name
    chartName: "generic-ingress", // Replace with the actual chart name if different
    chartVersion: "1.0.0", // Specify the version of the Helm chart you wish to deploy
    values: `ingress:
  enabled: true`, // Override default values from the chart with YAML or a string (YAML here as an example)
}, { provider: rancherProvider });

// Export the name of the deployed app
export const ingressAppName = ingressApp.name;
```

In the above program, we first set up a Rancher provider using `@pulumi/rancher2`. Then we ensure that the namespace for deploying the Helm chart exists. After that, we use the `rancher2.AppV2` resource to deploy the desired Helm chart onto the Rancher Kubernetes cluster. Make sure to replace placeholders (`helm-repo-name`, `generic-ingress`, `1.0.0`) with the actual values corresponding to your Helm chart repository and chart details.

Remember, the values for `repoName`, `chartName`, and `chartVersion` will depend on the specific Helm chart you're deploying. Modify them as needed for your application.

Once you've created this file, you can deploy it using the Pulumi CLI. Remember to have `kubectl` configured to point to the correct Kubernetes cluster that is managed by Rancher.

If you're running the Pulumi CLI for the first time with this project, use:

```sh
pulumi up
```

The CLI will display a preview of the actions the script will take and will ask for your confirmation before proceeding. If all is correct, you can approve it to start the deployment. After the deployment is complete, Pulumi will print any export values you have specified.

Please note that managing Kubernetes resources and Helm charts with Pulumi requires some understanding of both Kubernetes and Helm concepts. This program uses Pulumi's infrastructure as code approach to define the deployment of the Helm chart declaratively.