1. Deploy the trino-loadbalancer helm chart on Rancher


    To deploy the trino-loadbalancer Helm chart on Rancher using Pulumi, you will follow these general steps:

    1. Set up a Kubernetes cluster using Rancher: Before installing Helm charts, you need a Kubernetes cluster managed with Rancher. Pulumi provides the rancher2.Cluster resource for creating a cluster in Rancher.

    2. Create a Namespace: Helm charts should be installed in a specific namespace. Use the rancher2.Namespace resource to create a new Kubernetes namespace in your Rancher cluster.

    3. Deploy Helm Chart: Using the pulumi/kubernetes package, you can deploy Helm charts with the kubernetes.helm.v3.Chart resource.

    Before proceeding, ensure that you have installed Pulumi and configured it with the necessary cloud provider credentials. Also, make sure you have set up Rancher and that you can access it with your API keys.

    Below is a Pulumi program in TypeScript that demonstrates how to deploy a Helm chart on Rancher. This program assumes you already have a Rancher cluster provisioned and accessible.

    import * as rancher2 from "@pulumi/rancher2"; import * as k8s from "@pulumi/kubernetes"; // Replace these variables with real values const rancherClusterName = "my-rancher-cluster"; const helmChartName = "trino-loadbalancer"; const helmChartVersion = "x.y.z"; // specify the chart version const namespaceName = "trino-namespace"; // Step 1: Retrieve the Rancher cluster // Documentation: https://www.pulumi.com/registry/packages/rancher2/api-docs/cluster const cluster = rancher2.Cluster.get('cluster', rancherClusterName); // Step 2: Create a Namespace in Rancher for the Helm chart // Documentation: https://www.pulumi.com/registry/packages/rancher2/api-docs/namespace const namespace = new rancher2.Namespace("trino-namespace", { name: namespaceName, clusterId: cluster.id, }); // Initialize the Kubernetes provider using the retrieved Rancher cluster kubeconfig const k8sProvider = new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeConfig, }); // Step 3: Deploy the trino-loadbalancer Helm chart to the Rancher cluster // Documentation: https://www.pulumi.com/docs/reference/pkg/kubernetes/helm/v3/chart const trinoHelmChart = new k8s.helm.v3.Chart(helmChartName, { chart: helmChartName, version: helmChartVersion, namespace: namespace.name, }, { provider: k8sProvider }); // Export the kubeconfig to access the cluster export const kubeconfig = cluster.kubeConfig;

    Here is what the each part of the code does:

    • Retrieves the existing Rancher cluster: Before deploying anything, the program retrieves the existing Rancher cluster to work with it.

    • Creates a new namespace: A new Kubernetes namespace within the Rancher cluster is created specifically for the Trino LoadBalancer deployment. It ensures that all resources created by the Helm chart are grouped together and can be managed easily.

    • Sets up the Kubernetes provider: The Pulumi Kubernetes provider is initialized using the kubeconfig obtained from the Rancher cluster. This allows Pulumi to interact with the Kubernetes API server managed by Rancher.

    • Deploys the Helm chart: The trino-loadbalancer Helm chart is deployed to the Rancher managed cluster under the created namespace using the Pulumi Kubernetes provider.

    • Exports the kubeconfig: You might want to interact with your Kubernetes cluster later on using kubectl. The kubeconfig is exported for convenience.

    Make sure to replace the placeholders with actual values relevant to your Rancher setup and the Helm chart you want to deploy.

    After your Pulumi program is ready, you can run it using the following Pulumi CLI commands:

    pulumi up

    This will preview the changes and prompt you to continue with the deployment. If everything looks correct, confirm the deployment, and Pulumi will start the provisioning process. After a successful deployment, Pulumi will output any exported values, such as your cluster's kubeconfig.