Deploy the bitwarden helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the Bitwarden Helm chart on Azure Kubernetes Service (AKS), you'll first need an active AKS cluster. You can deploy one using Pulumi's `azure-native` package. Once the AKS cluster is up and running, you can deploy the Bitwarden Helm chart to the cluster.

Here's how you would do it step by step:

### 1. Set up an AKS cluster:

You'll start by creating a resource group and then deploying an AKS cluster into that group. The AKS cluster will use Pulumi's `azure-native` package, specifically the `ManagedCluster` class to define the AKS cluster.

### 2. Configure the Kubernetes provider:

Pulumi needs to interact with the AKS cluster to deploy the Helm chart, so you will configure the Kubernetes provider using the kubeconfig from the created AKS cluster.

### 3. Deploy the Bitwarden Helm chart:

Now, you'll use Pulumi's `kubernetes` package that provides a Helm Chart resource. You'll define the chart from the Bitwarden repository and set the necessary values for deployment.

Below is the complete Pulumi TypeScript program to accomplish this:

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as azure_native from "@pulumi/azure-native";
import * as k8s from "@pulumi/kubernetes";

// Step 1: Create a new Azure Resource Group
const resourceGroup = new azure_native.resources.ResourceGroup("resourceGroup");

// Step 2: Create the AKS cluster
const cluster = new azure_native.containerservice.ManagedCluster("aksCluster", {
    resourceGroupName: resourceGroup.name,
    identity: {
        type: "SystemAssigned",
    },
    agentPoolProfiles: [{
        count: 3,
        maxPods: 110,
        mode: "System",
        name: "agentpool",
        osDiskSizeGB: 30,
        osType: "Linux",
        vmSize: "Standard_DS2_v2",
    }],
    dnsPrefix: "akscluster", // A unique DNS prefix for AKS
    enableRBAC: true,       // Enable Role-Based Access Control for secure access
    kubernetesVersion: "1.19.7", // Specify your desired Kubernetes version
});

// Step 3: Use the AKS cluster's kubeconfig to configure a Kubernetes provider
const creds = pulumi.all([cluster.name, resourceGroup.name]).apply(([clusterName, rgName]) =>
    azure_native.containerservice.listManagedClusterUserCredentials({
        resourceGroupName: rgName,
        resourceName: clusterName,
    }),
);

const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: creds.apply(c => Buffer.from(c.kubeconfigs[0].value, "base64").toString()),
});

// Step 4: Deploy the Bitwarden Helm chart
const bitwardenChart = new k8s.helm.v3.Chart("bitwarden", {
    chart: "bitwarden",
    version: "1.2.3", // Replace with the desired chart version
    fetchOpts: {
        repo: "https://helm.bitwarden.com/", // Bitwarden repository URL
    },
}, { provider: k8sProvider });

// Export the cluster's kubeconfig
export const kubeconfig = creds.apply(c => Buffer.from(c.kubeconfigs[0].value, "base64").toString());
```

In this code:

- We're creating a new resource group to hold our AKS related resources.
- The AKS cluster is configured with system-assigned managed identity, and we're specifying the desired Kubernetes version and size of the VM.
- We're exporting the `kubeconfig` which you might need for manual operations later (like `kubectl` commands outside of Pulumi).
- We're deploying the Bitwarden chart from its helm repository to our cluster using the `Chart` resource from the Pulumi Kubernetes package. Make sure to replace `"1.2.3"` with the actual version number of the Bitwarden Helm chart you wish to use.

Please note that running this Pulumi program will incur costs related to the resources created in Microsoft Azure. Make sure you clean up resources after you're done to avoid any unwanted charges.

Also, make sure you have Pulumi CLI installed and configured for access to your Azure subscription and you're logged in with `pulumi login`.

To run the program, save the code to a file (e.g., `index.ts`), ensure you're in the directory containing this file in your terminal, and then execute `pulumi up`. This will provision the resources as defined in the script.