Deploy the yelb helm chart on Rancher

To deploy the Yelb Helm chart on a Kubernetes cluster managed by Rancher, you would typically follow these steps:

1. Set up a Rancher-managed Kubernetes cluster if you don't already have one.
2. Install the Rancher CLI or use the Rancher dashboard to interact with your Rancher instance.
3. Add the Helm chart repository that contains Yelb to your cluster's catalog.
4. Deploy the Yelb application using Rancher's application deployment features, either through the CLI or the dashboard.

However, with Pulumi, you can automate the deployment process. Pulumi allows you to define infrastructure as code and manage it programmatically. You write code using general-purpose programming languages, such as TypeScript, and Pulumi takes care of provisioning and managing the infrastructure.

Below is a TypeScript program that uses Pulumi to deploy the Yelb Helm chart on a Rancher-managed Kubernetes cluster. We'll use the Pulumi Rancher2 provider which gives us the ability to interact with Rancher resources directly from our Pulumi program.

Before deployment, ensure you have Pulumi installed, configured, and authenticated with the cloud provider where your Rancher instance is hosted. Also, make sure the rancher2 provider is configured with the necessary API keys and access permissions to interact with your Rancher setup.

The following Pulumi program performs the following tasks:

• It initializes a new Pulumi stack for our application deployment.
• It uses the rancher2 provider to interact with Rancher.
• It configures the necessary Rancher Cluster where we want to deploy Yelb.
• It adds the Helm chart repository to the Rancher catalog.
• It deploys the Yelb application using a Helm chart.

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

const config = new pulumi.Config();

// Initialize the Rancher 2 provider with the Rancher API URL and token.
// Make sure to replace the `rancherApiUrl` and `rancherTokenKey` with actual values.
const rancherProvider = new rancher2.Provider("rancher", {
    apiUrl: config.require("rancherApiUrl"), // e.g., "http://rancher.my-domain.com/v3"
    tokenKey: config.require("rancherTokenKey"), // Token obtained from Rancher dashboard
});

// Define the cluster where Yelb will be deployed.
// The cluster should already be managed by Rancher.
const clusterId = config.require("clusterId"); // Existing cluster ID in Rancher

// Define the namespace where Yelb will be deployed.
const yelbNamespace = new rancher2.Namespace("yelb-namespace", {
    clusterId: clusterId,
    name: "yelb",
    description: "Namespace for the Yelb application",
}, { provider: rancherProvider });

// Add the Helm chart repository to Rancher.
const yelbChartRepo = new rancher2.CatalogV2("yelb-chart-repo", {
    clusterId: clusterId,
    url: "https://helm.repository.com/charts", // Placeholder URL, replace with actual chart repo URL
    name: "yelb",
}, { provider: rancherProvider });

// Deploy Yelb using the Helm chart from the added repository.
const yelbApp = new rancher2.AppV2("yelb-app", {
    clusterId: clusterId,
    namespace: yelbNamespace.name,
    repoName: yelbChartRepo.name,
    chartName: "yelb",
    chartVersion: "0.1.0", // Replace with the correct chart version
    values: `
        # Your values yaml or a placeholder
        'ui': 
          'replicaCount': 2
        `,
    // Additional configurations, such as set values, can be added here.
}, { provider: rancherProvider });

// Export the name of the namespace and app.
export const namespaceName = yelbNamespace.metadata.apply(meta => meta.name);
export const appName = yelbApp.metadata.apply(meta => meta.name);

To run this program:

1. Save the code in a file named index.ts.
2. Create a new directory for your Pulumi project and navigate into it.
3. Run pulumi new, select the TypeScript template, and paste your code into index.ts.
4. Replace configuration placeholders with your actual data.
5. Execute pulumi up to preview and deploy the resources.

Please note, you need to have access to the Rancher API and replace the placeholder values in the program with appropriate values specific to your Rancher setup. These include the API URL, the token key, the cluster ID, and the Helm chart repository URL.

Remember to check the rancher2.Namespace, rancher2.CatalogV2, and rancher2.AppV2 documentation for more details on the resources and their configurations.