1. Deploy the kubernetes-vault helm chart on Digital Ocean Kubernetes Service


    To deploy the Kubernetes-Vault Helm chart on the DigitalOcean Kubernetes service, you need to perform the following steps:

    1. Create a DigitalOcean Kubernetes cluster.
    2. Configure Pulumi to work with the DigitalOcean provider.
    3. Install the Helm chart into the DigitalOcean Kubernetes cluster.

    First, make sure you have the following prerequisites:

    • A DigitalOcean account with an API token generated for authentication.
    • The pulumi program installed and set up on your local machine.
    • kubectl installed to interact with the Kubernetes clusters.

    In this Pulumi program, we will use the digitalocean and kubernetes packages. The digitalocean.KubernetesCluster resource is used to create a Kubernetes cluster in the Digital Ocean cloud, and the kubernetes.helm.v3.Chart resource from the Pulumi Kubernetes provider is used to deploy the Helm chart.

    Below is the TypeScript Pulumi program that performs these tasks:

    import * as digitalocean from "@pulumi/digitalocean"; import * as kubernetes from "@pulumi/kubernetes"; // Create a DigitalOcean Kubernetes cluster. const cluster = new digitalocean.KubernetesCluster("vault-cluster", { region: digitalocean.Regions.NYC1, version: "latest", nodePool: { name: "vault-pool", size: digitalocean.DropletSlugs.DropletS2VCPU2GB, nodeCount: 2, }, }); // Export the Kubeconfig so that we can easily access our cluster with `kubectl` export const kubeconfig = cluster.kubeConfigs[0].rawConfig; // Create a provider for the DigitalOcean Kubernetes cluster const k8sProvider = new kubernetes.Provider("do-k8s", { kubeconfig: cluster.kubeConfigs[0].rawConfig, }); // Deploy the Kubernetes-Vault Helm chart to the cluster. const vaultChart = new kubernetes.helm.v3.Chart("kubernetes-vault", { repo: "https://charts.banzaicloud.com/", chart: "vault", namespace: "default", // Change this to the namespace where you want your services deployed. }, { provider: k8sProvider }); // Stack exports export const vaultChartStatus = vaultChart.status;

    Here's a brief explanation of the code:

    • We use @pulumi/digitalocean to interact with DigitalOcean's services.
    • We create a Kubernetes cluster by defining a digitalocean.KubernetesCluster and specifying the size (size), the number of nodes (nodeCount), and the region (region).
    • We specify the use of Helm chart by utilizing the kubernetes.helm.v3.Chart and provide the chart's repository URL and name (chart). The namespace can be adjusted if you want the chart to be installed in a different Kubernetes namespace.
    • We use the kubeconfig from the created cluster to instantiate a Pulumi Kubernetes provider.
    • We export the kubeconfig and the status of the Helm Chart deployment as stack outputs, so they can be easily accessed outside the program. The kubeconfig can be used with kubectl for further interaction with the cluster, and the status gives an overview of the deployment status of the Vault service within Kubernetes.

    To execute the above program:

    1. Save it to a file named index.ts.
    2. Run pulumi up to create the DigitalOcean Kubernetes cluster and deploy the Vault chart onto it.

    This will start the deployment process. Pulumi does a preview first and will ask for confirmation before provisioning the resources. Once confirmed, it will deploy the Kubernetes cluster and the specified Helm chart.