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

Question

Pulumi · Accepted Answer

To deploy the JuiceFS Helm chart on Azure Kubernetes Service (AKS), you'll need to complete a few steps:

1. **Set up an AKS cluster**: You'll first need to create an AKS cluster where your JuiceFS Helm chart will be deployed.
2. **Install Helm**: Helm is a package manager for Kubernetes, which you'll use to deploy JuiceFS.
3. **Add the JuiceFS Helm repository**: This step involves adding the repository where the JuiceFS chart is stored so that Helm can access it.
4. **Deploy the JuiceFS chart**: Finally, you'll use Helm to install the JuiceFS chart on your AKS cluster.

The following Pulumi TypeScript program automates these steps:

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

// Step 1: Creating an Azure Kubernetes Service (AKS) cluster
const resourceGroupName = new azure_native.resources.ResourceGroup("myResourceGroup");
const k8sCluster = new azure_native.containerservice.ManagedCluster("myAKSCluster", {
    resourceGroupName: resourceGroupName.name,
    agentPoolProfiles: [{
        count: 2,
        maxPods: 110,
        mode: "System",
        name: "agentpool",
        osDiskSizeGB: 30,
        osType: "Linux",
        vmSize: "Standard_DS2_v2",
    }],
    dnsPrefix: "myakscluster",
    enableRBAC: true,
    kubernetesVersion: "1.20.9",
    linuxProfile: {
        adminUsername: "aksuser",
        ssh: {
            publicKeys: [{
                keyData: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC...",
            }],
        },
    },
    nodeResourceGroup: `MC_azure-native-go_${pulumi.getStack()}`,
    resourceNameSuffix: "abcd",
});

// Step 2: Install Helm on the local machine where Pulumi will run
// This can be done using native package managers like `brew install helm` (on MacOS), `choco install kubernetes-helm` (on Windows),
// or `sudo snap install helm --classic` (on Linux).

// Step 3: Use the Kubernetes provider to interact with the AKS cluster
const k8sProvider = new k8s.Provider("myK8sProvider", {
    kubeconfig: k8sCluster.kubeConfigRaw,
});

// Step 4: Add the JuiceFS Helm Chart Repository and deploy the chart on AKS
// The Helm Chart for JuiceFS is not publicly available in Helm Hub (until the knowledge cutoff in February 2023). Typically, this is how you would add and deploy:
const juicefsChart = new k8s.helm.v3.Chart("juicefs-chart", {
    chart: "juicefs",
    version: "0.10.0", // Replace with the actual chart version.
    fetchOpts: {
        repo: "https://your-repo-url", // Replace with the actual repository URL where the JuiceFS chart is hosted.
    },
}, { provider: k8sProvider });

// Export the kubeconfig
export const kubeconfig = k8sCluster.kubeConfigRaw;
```

Let me break down what the above code does:

- We import the necessary Pulumi packages.
- We create an Azure resource group and AKS cluster with a Linux-based node pool. The `ssh` key should be replaced with your actual SSH public key.
- We initialize a Kubernetes provider with the generated `kubeConfigRaw` from the AKS cluster to interact with Kubernetes resources.
- We create a Helm chart resource for JuiceFS by referencing its chart and version. You'll need to replace `your-repo-url` with the actual repository URL, and `0.10.0` with the version of the chart you wish to deploy.
- We export the raw KubeConfig data so you can access the Kubernetes cluster using `kubectl` from your local computer.

Please ensure you replace the placeholder values such as the SSH key data and JuiceFS repository URL with actual values appropriate for your setup.

Before running the Pulumi program, make sure you have Pulumi and Helm installed locally and that you are logged into Azure with the Azure CLI.

To run this Pulumi program:
1. Save the code to a file named `index.ts`.
2. Run `pulumi up` in the terminal to execute the program. This will provision the resources in Azure and deploy JuiceFS to your AKS cluster.