1. Deploy the benthos helm chart on Kubernetes


    Deploying a Helm chart on Kubernetes using Pulumi is a process that involves a few steps. Helm charts are packages of pre-configured Kubernetes resources that you can deploy as a single unit. Benthos is an open-source data streaming platform that you can run on Kubernetes. To deploy the Benthos Helm chart, you need to have a Kubernetes cluster running and Helm installed.

    Let's break down the key steps you'll take in the Pulumi program to deploy Benthos using its Helm chart:

    1. Set up the Pulumi program using the necessary imports.
    2. Create a Chart resource that represents the Benthos Helm chart. You'll specify the chart name, any custom values to configure Benthos, and the namespace to deploy into.
    3. If you need to customize the Benthos deployment, you can provide a values object that overrides the default settings in the Helm chart.

    Now, let's see how to write the Pulumi TypeScript code to deploy the Benthos Helm chart into a Kubernetes cluster:

    import * as k8s from '@pulumi/kubernetes'; // A Kubernetes namespace to deploy Benthos into. If you already have a namespace, // you can remove this section and specify your existing namespace in the Chart resource. const namespace = new k8s.core.v1.Namespace('benthos-ns', { metadata: { name: 'benthos' }, }); // Deploy the Benthos Helm chart. // Replace `<version>` with the specific chart version you want to deploy. // Replace `<repo>` with the Helm repository URL where the Benthos chart is located, if it's not in the default Helm repo. const benthosChart = new k8s.helm.v3.Chart('benthos', { chart: 'benthos', version: '<version>', namespace: namespace.metadata.name, repo: '<repo>', // If you have custom values to configure Benthos, specify them here. For example: // values: { // replicaCount: 2, // service: { // type: 'ClusterIP', // }, // }, }); // Export the Benthos service endpoint. export const benthosService = namespace.metadata.name.apply(nsName => `http://${nsName}.svc.cluster.local`);

    In the code above, we're defining a Pulumi program to deploy Benthos into a Kubernetes cluster:

    • We're importing the Pulumi Kubernetes package, which allows us to interact with Kubernetes resources within Pulumi.
    • We create a new namespace for Benthos. If you already have a namespace where you wish to deploy Benthos, you can omit this step and use your existing namespace.
    • We instantiate a Chart resource representing the Benthos Helm chart. You'll need to know the version of the chart you want to deploy and the repository where the chart is hosted. You can find this information in Helm chart documentation or repositories.
    • There's a commented-out section for values where you can specify any custom configurations. Benthos Helm chart will have its default values, but if there's anything specific to your setup or you need to override any defaults, this is where you would do it.

    Please replace <version> with the actual version number of the Benthos Helm chart you're deploying and <repo> with the URL of the Helm repository if the chart is not in the default Helm chart repository.

    When you run this program with pulumi up, Pulumi will communicate with your Kubernetes cluster and deploy the Benthos Helm chart into the specified namespace. The export statement at the end serves to output the Kubernetes service endpoint once the deployment is complete.

    This code assumes that you have a Kubernetes cluster configured in your local .kube/config or the environment variables for a Kubernetes provider are set. Pulumi uses these settings just like kubectl does to interact with your Kubernetes cluster.