Deploy the goalert helm chart on Kubernetes

Question

Pulumi · Accepted Answer

Deploying a Helm chart on a Kubernetes cluster using Pulumi is a two-step process:

1. Set up a Kubernetes cluster.
2. Deploy the Helm chart to the cluster.

### Step 1: Set up a Kubernetes cluster
If you don't already have a Kubernetes cluster, you would need to create one. You can create clusters on various cloud providers like AWS, GCP, Azure, etc., using Pulumi. For the sake of this guide, I'll assume you have an existing Kubernetes cluster. You need to have `kubeconfig` file for your cluster which Pulumi uses to deploy the Helm chart.

### Step 2: Deploy the Helm Chart
To deploy the Helm chart, you'll use Pulumi's Kubernetes provider, which allows you to deploy Helm charts among other Kubernetes resources.

Below is a basic Pulumi program in TypeScript that deploys the `goalert` Helm chart on a Kubernetes cluster:

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

// Assuming you have configured your Pulumi to use the correct Kubeconfig
// This could be set using Pulumi config or via environment variables
// Details on how to set up Pulumi with Kubernetes can be found in the Pulumi documentation:
// https://www.pulumi.com/docs/intro/cloud-providers/kubernetes/setup/

// Create a Kubernetes provider instance that uses our existing cluster
const provider = new k8s.Provider("provider", {
    kubeconfig: process.env.KUBECONFIG, // Replace with the appropriate method to fetch your kubeconfig
});

// Deploy the goalert Helm chart
const goAlertChart = new k8s.helm.v3.Chart("goalert", {
    chart: "goalert",
    version: "x.y.z", // Replace "x.y.z" with the specific chart version you want to deploy
    fetchOpts: {
        repo: "https://example.com/path/to/your/helm/charts/", // Replace with the Helm chart repository URL where goalert is hosted
    },
    // You can specify values for the Helm chart using 'values'
    values: {
        // Custom values to configure goalert
    },
}, { provider }); // Make sure to pass the provider

// Export the URL for the deployed goalert application
// This may vary based on your goalert Helm chart's service configuration
export const goAlertUrl = goAlertChart.getResourceProperty(
    "v1/Service", "goalert", "status"
).apply(status => `http://${status.loadBalancer.ingress[0].ip}`);
```

In the program, remember to replace `"x.y.z"` with the version number of the goalert Helm chart you wish to deploy, and you should provide the Helm repository URL where the `goalert` chart can be found.

The `values` property within the chart definition allows you to configure the `goalert` Helm chart with custom values. This would be where you include any specific configuration for your `goalert` deployment.

Finally, the program exports the URL for the `goalert` service. Depending on your Helm chart, `goalert` may create a Kubernetes Service of type LoadBalancer, which would expose an IP you can access your application at. Adjust the `export` statement as necessary based on the resources your specific Helm chart creates.

Please ensure that your Pulumi configuration is set up and your `kubeconfig` is pointing to the right cluster. Refer to [Pulumi's Kubernetes setup documentation](https://www.pulumi.com/docs/intro/cloud-providers/kubernetes/setup/) for more information about configuring Pulumi with Kubernetes.

Once you have your Pulumi program ready to go, you can deploy it by running:

```sh
pulumi up
```

This command will prompt you for confirmation before applying the changes to your Kubernetes cluster. After confirming, Pulumi will handle deploying the `goalert` Helm chart to your Kubernetes cluster.