Deploy the pipecd helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the `pipecd` Helm chart on Kubernetes using Pulumi, you will be leveraging the `kubernetes.helm.v3.Chart` resource from Pulumi's Kubernetes provider. This resource allows you to deploy Helm charts to a Kubernetes cluster from a Pulumi program.

Here are the steps you would typically follow in the code:

1. **Import Pulumi Kubernetes Library**: This is required to interact with Kubernetes resources.
2. **Create a Kubernetes Provider**: If you are targeting a specific Kubernetes cluster, you can specify the provider. Otherwise, Pulumi will interact with the default Kubernetes context set in `~/.kube/config`.
3. **Deploy Helm Chart**: By creating an instance of `Chart`, you tell Pulumi to deploy a Helm chart. In this instance, you will be deploying the `pipecd` Helm chart. You can specify the repository, chart name, version, and any custom values you want to apply to the chart.

Below is a TypeScript program illustrating how to deploy the `pipecd` Helm chart on Kubernetes using Pulumi:

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

// Specifies the settings for the pipecd Helm chart.
const pipecdChart = new k8s.helm.v3.Chart("pipecd", {
    // You may need to specify the specific Helm chart repository where pipecd is hosted,
    // along with the version of the chart you want to deploy.
    // In this example, details such as version and repository are placeholders
    // and should be replaced with accurate information for pipecd.
    repo: "pipecd", // Replace with actual repository name if different
    chart: "pipecd",
    version: "x.y.z", // Replace with the desired chart version
    // If the pipecd chart requires any custom values, specify them here.
    // For example, if you need to set a service type to LoadBalancer or set any configurations,
    // you can do so within the 'values' block.
    values: {
        // Example configuration (these are not actual pipecd settings)
        // service: {
        //     type: "LoadBalancer"
        // },
        // Replace this with the actual values to configure pipecd based on your requirements.
    },
});

// Export any relevant resources created, such as a LoadBalancer IP, if applicable.
// This is useful for accessing deployed resources after running `pulumi up`.
export const pipecdServiceUrl = pipecdChart.getResource("v1/Service", "pipecd", "pipecd-web").status.loadBalancer.ingress[0].hostname;
```

Here's what each part does:
- **Imports**: Adds the necessary Pulumi and Kubernetes libraries.
- **Chart Resource**: Defines a Helm chart named `pipecd`. You will need to provide the exact chart name and repository.
- **Configuration Values**: If your pipecd deployment requires specific configurations, they would be passed in the `values` object. Helm charts have configurable parameters that you can customize. This might include things like image versions, replica counts, or specific settings unique to pipecd. You need to refer to the pipecd chart documentation for a list of available configuration options.
- **Exports**: Here, you typically export relevant endpoints such as the load balancer URL that you might use to interact with pipecd. In this code, we assume pipecd exposes a LoadBalancer service, which gives an external IP or hostname. It's necessary to replace `pipecd-web` with the actual service name used by the pipecd Helm chart.

Before running this program, ensure you have access to the target Kubernetes cluster and that your Pulumi environment is properly set up with the current context pointing to your cluster. Then, you can run `pulumi up` to deploy the pipecd application to your cluster.

Lastly, consult the official [`kubernetes.helm.v3.Chart` resource documentation](https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm/v3/chart/) for more detailed information on working with Helm charts using Pulumi.