Deploy the zotero helm chart on Digital Ocean Kubernetes Service

To deploy the Zotero Helm chart on the DigitalOcean Kubernetes Service, you'll first need to create a Kubernetes cluster in DigitalOcean. After the cluster is provisioned, you can use the Pulumi Kubernetes provider to deploy the Helm chart.

In the outline below, we're going to do the following:

1. Import the necessary Pulumi libraries for DigitalOcean and Kubernetes.
2. Create a new DigitalOcean Kubernetes cluster.
3. Configure Kubernetes provider to use the newly created cluster.
4. Deploy the Zotero Helm chart to the cluster.

Here's a Pulumi program that accomplishes these steps:

import * as digitalocean from "@pulumi/digitalocean";
import * as kubernetes from "@pulumi/kubernetes";

// 1. Create a new DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("zotero-cluster", {
    // Replace these with appropriate values
    region: digitalocean.Regions.NYC1,
    version: "latest", // You can specify a specific version of Kubernetes.
    nodePool: {
        name: "default",
        size: digitalocean.DropletSlugs.DropletS2VCPU2GB, // This is the size of the droplets (nodes) to use.
        nodeCount: 2, // Number of nodes to create in the cluster.
    },
});

// 2. Configure Kubernetes provider to use the newly created cluster
const k8sProvider = new kubernetes.Provider("k8s-provider", {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// 3. Deploy the Zotero Helm chart to the cluster
const zoteroChart = new kubernetes.helm.v3.Chart("zotero", {
    chart: "zotero",
    // You might need to specify a Helm repository where the Zotero chart can be found.
    // For example:
    // repo: "https://charts.example.com/", 

    // Additionally, you may need to provide specific configuration parameters for Zotero.
    // You can set them using the 'values' property.
    values: {
        // For example:
        // service: {
        //     type: "ClusterIP",
        // },
    },
}, { provider: k8sProvider });

// Export the Kubeconfig and the service URL to access Zotero
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const zoteroServiceUrl = zoteroChart.getResourceProperty("v1/Service", "zotero", "status").apply(status => status.loadBalancer.ingress[0].ip);

Let me walk you through what each section is doing:

• In the first section, we're using the @pulumi/digitalocean package to create a DigitalOcean Kubernetes cluster. This includes the region, the version of Kubernetes, the size of the nodes, and the number of nodes.

• Next, we configure the Kubernetes provider with the kubeconfig from the newly created DigitalOcean cluster. This allows Pulumi to communicate with the Kubernetes cluster to manage resources.

• In the third section, we deploy a Helm chart, which is named zotero. Here we assume that the zotero chart is available in a remote Helm repository; this would be replaced with the actual repository URL. We also provide a values object, which would include any necessary configuration for the Zotero application. Since this is highly dependent on the application specifics and your needs, you'll need to fill it in accordingly.

• Finally, we export the kubeconfig, which can be used to interact with the Kubernetes cluster using kubectl or other Kubernetes management tools. We also export the IP address of the Zotero service, assuming it's exposed via a LoadBalancer. If it's not, you may need to adjust this to fit the actual service exposure method (such as NodePort or Ingress).

Please note that deploying applications on Kubernetes often requires additional setup, including configuring storage, secrets, and other dependencies. You'll need to adjust the Helm chart values accordingly.

Make sure to install Pulumi and configure your Pulumi and DigitalOcean credentials before running this program. Once your credentials are set up, you can run pulumi up to provision the resources and deploy the Zotero Helm chart.