Deploy the fluentd-papertrail helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the `fluentd-papertrail` Helm chart on Azure Kubernetes Service (AKS), you need to follow these steps:

1. **Set up Azure Kubernetes Service (AKS):** First, you need to create a Kubernetes cluster in AKS where your application will be deployed. Pulumi's Azure Native provider offers the `ContainerService` component to create and manage an AKS cluster.

2. **Install and Configure Helm:** After setting up AKS, you'll need to install Helm, a package manager for Kubernetes, and configure it to deploy the Helm chart.

3. **Deploy the Helm chart:** Finally, you can define a Pulumi program to deploy the `fluentd-papertrail` Helm chart to your AKS cluster using Pulumi's Kubernetes provider.

Below is a Pulumi program written in TypeScript that creates an AKS cluster and deploys the `fluentd-papertrail` Helm chart:

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

const config = new pulumi.Config();
const resourceGroupName = config.require("resourceGroupName");
const location = config.require("location");

// Create an AKS cluster.
const aksCluster = new azure.containerservice.ManagedCluster("aksCluster", {
    resourceGroupName: resourceGroupName,
    location: location,
    agentPoolProfiles: [{
        count: 2,
        maxPods: 110,
        mode: "System",
        name: "agentpool",
        vmSize: "Standard_DS2_v2",
    }],
    dnsPrefix: `${pulumi.getStack()}aks`,
    enableRBAC: true,
    kubernetesVersion: "1.18.14",
});

// Export the kubeconfig.
export const kubeconfig = aksCluster.kubeconfigs[0].value.apply(v => Buffer.from(v, 'base64').toString());

// Create a Kubernetes provider instance that uses our AKS cluster from above.
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: kubeconfig,
});

// Deploy the `fluentd-papertrail` Helm chart.
const fluentdPapertrailChart = new k8s.helm.v3.Chart("fluentd-papertrail", {
    repo: "stable", // Replace with the correct Helm chart repository name
    chart: "fluentd-papertrail",
    version: "0.1.0", // Replace with the correct chart version
    // You may need to add additional configuration for the `fluentd-papertrail` chart here.
    // Check the chart's values.yaml file or the chart's documentation for more details.
}, {provider: k8sProvider});

// Export the public IP address of the Papertrail service, if service type is LoadBalancer.
export const fluentdPapertrailFrontendIp = fluentdPapertrailChart.getResourceProperty(
    "v1/Service", "fluentd-papertrail", "status"
).apply(status => status.loadBalancer.ingress[0].ip);
```

Before you run this program, you need to ensure you have several prerequisite steps in place:

- Install Pulumi.
- Configure Azure with Pulumi using the Azure CLI authentication.
- Customize the AKS cluster parameters as per your requirements, including the resource group name and location where the cluster should be hosted.
- You might need to adjust the Helm chart deployment parameters based on the specific configuration you want for `fluentd-papertrail`. You can find these details in the Helm chart's `values.yaml` file or its documentation.

After setting up all these configurations, you can run the Pulumi program to set up the AKS cluster and deploy your Helm chart:

- `pulumi up` - to create or update resources according to your Pulumi program.

In this program, I've set up an AKS cluster with RBAC enabled and a system node pool. I am using Pulumi's Kubernetes provider to deploy the Helm chart. Please make sure to use the correct repository URL for the `fluentd-papertrail` Helm chart and to select the correct chart version. You can typically find this information in the documentation for the Helm chart you're deploying.

If the Helm chart requires additional configuration, you can add key-value pairs in the `values` object in the chart instantiation. After the deployment, you can also export any required details, such as the IP address of a LoadBalancer service if the chart creates one.