Deploy the bitwarden-rs helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

Deploying the `bitwarden-rs` Helm chart on DigitalOcean Kubernetes Service (DOKS) entails creating a Kubernetes cluster on DigitalOcean, then using the Helm package manager to install the chart on the cluster.

Here's a step-by-step guide on how to do that with Pulumi in TypeScript:

### Prerequisites
Before beginning, you should have Pulumi installed and set up with DigitalOcean as the cloud provider. You should have the `pulumi` command line tool installed, and you should have run `pulumi login` to log in to your Pulumi account.

1. **Creating a Kubernetes Cluster in DigitalOcean:**
We will use the `@pulumi/digitalocean` package to create a Kubernetes cluster in DigitalOcean. The `KubernetesCluster` resource allows us to define the desired state of our cluster.

2. **Deploying Helm chart on the cluster:**
After the cluster is set up, we can use the `@pulumi/kubernetes` package to install the `bitwarden-rs` Helm chart to our cluster. The `Chart` resource from the `helm.sh` namespace allows us to deploy applications using Helm charts directly.

### The Program
Here's how you could write a Pulumi program in TypeScript to achieve the deployment:

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

// Create a DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    // Specify the region for the cluster
    region: digitalocean.Regions.NYC3,
    // Define the version of Kubernetes to use
    version: "1.21.5-do.0",
    nodePool: {
        // The droplet size to use for your worker nodes
        size: digitalocean.DropletSlugs.DropletS2VCPU2GB,
        // The number of worker nodes to deploy
        nodeCount: 2,
        // The name of the node pool
        name: "default",
    },
});

// Create a provider resource representing the newly created cluster
const k8sProvider = new k8s.Provider("do-k8s", {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Deploy the bitwarden-rs Helm chart on the cluster
const bitwardenChart = new k8s.helm.v3.Chart("bitwarden-rs", {
    chart: "bitwarden_rs",
    version: "1.9.1", // Use the version that suits your needs
    fetchOpts:{ 
        repo: "https://charts.bitnami.com/bitnami",
    },
}, { provider: k8sProvider });

export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const bitwardenServiceEndpoint = bitwardenChart.getResourceProperty("v1/Service", "bitwarden-rs", "status").apply(status => status.loadBalancer.ingress[0].ip);

```

### Explanation
This Pulumi program is written in TypeScript and performs the following steps:

- It creates a new DigitalOcean Kubernetes cluster by specifying the desired number of nodes, size, and Kubernetes version. We've named the cluster `do-cluster`.

- After creating the cluster, we instantiate a Kubernetes provider, `k8sProvider`, which is necessary for Pulumi to communicate with the cluster using the kubeconfig obtained from the cluster creation.

- Next, we use the `Chart` resource to deploy the `bitwarden-rs` Helm chart.

- Finally, we export a couple of stack outputs: the kubeconfig to access the cluster and the Bitwarden service's external IP address. These outputs will be printed in your terminal once the Pulumi program successfully runs.

### Running the Program
To deploy this infrastructure, you would save this TypeScript code to a file named `index.ts`, and then run `pulumi up` in the same directory. Pulumi would then execute the program, stand up the cluster, and install the Helm chart.

Remember that Helm charts can have dependencies and configuration options that should be customized according to your needs. You should refer to the `bitwarden-rs` Helm chart documentation for specific configuration parameters and adjust the `values` field in the Helm chart accordingly.

Ensure that you also manage the state access and secrets securely when using Pulumi in a team or production setting.