Deploy the prometheus-alerts helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the Prometheus Alerts Helm chart on a Kubernetes cluster using Pulumi, you will first need to install and import the Pulumi Kubernetes library in your TypeScript code. Within the code, you will make use of the `Chart` resource from the Kubernetes provider to specify and deploy the Helm chart.

Below is a Pulumi program in TypeScript that demonstrates how to deploy the `prometheus-alerts` Helm chart. The program assumes that you have a Kubernetes cluster already configured and that your Pulumi environment is authenticated against it.

This is what the program will do:
1. Import necessary modules from Pulumi and other necessary TypeScript modules.
2. Use the `Chart` resource to define the Helm chart deployment for Prometheus Alerts.
3. Configure the necessary parameters for the `Chart`, such as the chart name, version, and any custom values you want to override in the `values` property.

Let's write the program:

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

// Create a Kubernetes Namespace
const ns = new k8s.core.v1.Namespace("test-namespace", {
    metadata: {
        name: "prometheus-alerts",
    },
});

// Deploy the prometheus-alerts Helm chart into the created namespace.
const prometheusAlertsChart = new k8s.helm.v3.Chart("prometheus-alerts", {
    namespace: ns.metadata.name,
    chart: "prometheus-alerts",
    version: "INSERT_CHART_VERSION_HERE", // Specify the chart version, e.g., "0.1.0"
    fetchOpts: {
        repo: "https://prometheus-community.github.io/helm-charts",
    },
    // Define custom values for the Helm chart if necessary.
    // This is where you would specify custom alert thresholds, configurations, or any other chart specific settings.
    // values: {
    //     // Custom configuration here
    // },
}, { dependsOn: ns });

// Export the Namespace name and the Chart status
export const namespaceName = ns.metadata.name;
export const chartStatus = prometheusAlertsChart.status;
```

Please replace `INSERT_CHART_VERSION_HERE` with the actual version of the Prometheus Alerts Helm chart that you want to deploy.

The `fetchOpts` is used to provide the Helm repository URL where the chart is located. The `values` property, which is commented out, would be where you can specify custom configurations for your Prometheus Alerts setup. If you need to customize other parts of the chart, like setting up alert manager or other integrations, you would do that within the `values` object.

After deploying this Pulumi program, you will have a new instance of Prometheus Alerts running in your Kubernetes cluster. You can export additional outputs like endpoints or other resources created as a result of this deployment, depending on your needs.

Remember to install Pulumi and all necessary plugins, and configure your access to the Kubernetes cluster before running this program.

To run this Pulumi program:
1. Ensure you have Pulumi CLI installed and have logged in.
2. Create a new Pulumi TypeScript project.
3. Replace the content of your `index.ts` file with the code above.
4. Run `pulumi up` to preview and deploy the changes.