Deploy the vault-token-injector helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the `vault-token-injector` Helm chart on a Kubernetes cluster using Pulumi, we'll follow these general steps:

1. **Setup a Kubernetes Cluster**: We'll need an existing Kubernetes cluster. For this example, we'll assume that you have one set up and that your `kubeconfig` file is properly configured to communicate with your cluster.

2. **Install the Helm Chart**: We'll use the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider to deploy the Helm chart associated with the `vault-token-injector`.

3. **Configure the Chart Values**: We need to provide configuration values that are specific to the `vault-token-injector` Helm chart. This is often done via a values.yaml file when using Helm directly. In Pulumi, we'll accomplish this through an object within our code.

4. **Access the Deployed Resources**: After deploying the chart, we might want to export some information about the resources, such as the service URL.

Below is a Pulumi TypeScript program that carries out these steps:

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

// Define the vault-token-injector Helm chart details.
const vaultTokenInjectorChart = new k8s.helm.v3.Chart("vault-token-injector", {
    repo: "helm-repository-name", // Replace with the name of the repository where the chart is located
    chart: "vault-token-injector", // The name of the chart
    version: "chart-version", // Replace with the specific chart version you wish to deploy
    namespace: "default", // The namespace where this chart will be deployed
    // You can set the values for the chart in a similar manner as you would in a values.yaml file.
    values: {
        // Set your own Helm chart values here. For example:
        // key: value,
        // key2: {
        //   subkey: subvalue,
        // },
    },
});

// Optionally, Export the Service URL for the vault-token-injector (if applicable)
// You'd replace `serviceName` with the actual name of the Service created by the Helm chart
const injectorService = vaultTokenInjectorChart.getResource("v1/Service", "serviceName");
export const vaultTokenInjectorUrl = injectorService.status.apply(status => `http://${status.loadBalancer.ingress[0].ip}`);

```

Before running this program, you should replace the placeholders with real values according to your setup:

- `helm-repository-name`: The name of the repository where the Vault injector Helm chart is stored.
- `chart-version`: The version of the chart you'd like to deploy.
- `serviceName`: The name of the Kubernetes Service as defined by the Vault injector Helm chart, if it creates a Service.
- The `values` object should be populated with the configuration you'd like to provide to the `vault-token-injector` chart. This structure mirrors the one you'd find in a `values.yaml` file used when deploying a chart with Helm directly.

Once the code above is configured and run, Pulumi will deploy the `vault-token-injector` Helm chart to your Kubernetes cluster. If you have any custom configurations or resources that are required by the `vault-token-injector`, you should include them in the `values` property.

Remember to ensure that your Pulumi CLI is authenticated with your cloud provider and that the `kubeconfig` allows Pulumi to interact with your Kubernetes cluster. For more detailed information, you might want to visit the [Pulumi Kubernetes Helm Chart documentation](https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm/v3/chart/).

After running the Pulumi program, all resources specified by the `vault-token-injector` Helm chart will be created on your Kubernetes cluster. You can interact with them using `kubectl` or Pulumi as needed. If the chart exposes a service, I've included an example of how to export its URL (assuming the service is of type `LoadBalancer`), though the exact details may vary based on your environment and the chart's configuration.