Deploy the stakater-notify-slack helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the Stakater Notify-Slack Helm chart on Azure Kubernetes Service (AKS), you'll need to follow a series of steps with Pulumi:

1. **Provision an AKS cluster**: Use `azure-native` to provision the Kubernetes cluster.
2. **Configure Kubernetes Provider**: Use the Pulumi Kubernetes provider to communicate with the AKS cluster.
3. **Deploy Helm Chart**: Use the `Chart` resource from the `kubernetes` package to deploy the Stakater Notify-Slack chart.

Below is a detailed program that performs these steps.

### Step 1: Provision AKS Cluster
This step sets up the AKS cluster. Make sure that you have the right Azure permissions and have configured Pulumi with your Azure credentials.

### Step 2: Configure Kubernetes Provider
After the AKS cluster is up and running, you need to configure Pulumi to use the Kubernetes provider. This step will involve obtaining the kubeconfig from the AKS cluster.

### Step 3: Deploy Helm Chart
Finally, you install the Helm chart for Stakater Notify-Slack into the AKS cluster. You'll specify the chart name, version, and any configuration values (optionally).

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

// Create an Azure Resource Group
const resourceGroup = new azure.core.ResourceGroup("resourceGroup", {
    location: "East US",
});

// Create an Azure AD application for AKS
const adApp = new azuread.Application("aks");

// Create a Service Principal for the Azure AD application
const adSp = new azuread.ServicePrincipal("aksSp", {
    applicationId: adApp.applicationId,
});

// Create the Service Principal secret
const adSpPassword = new azuread.ServicePrincipalPassword("aksSpPassword", {
    servicePrincipalId: adSp.id,
    value: "VerySecretPassword",  // Replace with an actual secure password.
    endDate: "2099-01-01T00:00:00Z",
});

// Create the AKS cluster
const aksCluster = new azure.containerservice.KubernetesCluster("aksCluster", {
    location: resourceGroup.location,
    resourceGroupName: resourceGroup.name,
    agentPoolProfiles: [{
        count: 1,
        maxPods: 110,
        mode: "System",
        name: "agentpool",
        osDiskSizeGb: 30,
        osType: "Linux",
        vmSize: "Standard_DS2_v2",
    }],
    dnsPrefix: "aks-example",
    linuxProfile: {
        adminUsername: "adminuser",
        sshKey: {
            keyData: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQD3b3Idp4+OyPnhRn9m5lK4pl9LH/bhVCfspXRAsWP000H1p ... user@domain.com",
        },
    },
    servicePrincipal: {
        clientId: adApp.applicationId,
        clientSecret: adSpPassword.value,
    },
    kubernetesVersion: "1.18.14",
}, {
    dependsOn: [adApp, adSp, adSpPassword],
});

// Export the Kubeconfig
export const kubeconfig = aksCluster.kubeConfigRaw;

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

// Deploy the stakater-notify-slack helm chart using the kubernetes provider.
const slackNotifierChart = new k8s.helm.v3.Chart("slackNotifierChart", {
    chart: "stakater-notify-slack",
    version: "0.1.4", // Use the preferred chart version
    // Values from the Helm chart's 'values.yaml' file, for instance:
    values: {
        slack: {
            webhookurl: "https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX", // Replace with your Slack Webhook URL
            // add other values here
        },
    },
    fetchOpts:{
        repo: "https://stakater.github.io/stakater-charts", // Helm chart repository
    },
}, { provider: k8sProvider });

// Export the Slack notifier chart status
export const slackNotifierChartStatus = slackNotifierChart.status;
```

This program initializes the Pulumi project with the necessary imports and creates:

- An Azure Resource Group using the `azure.core.ResourceGroup` class.
- Azure AD application and service principal is used by AKS for identity purposes.
- A Service Principal Password, which acts as a secret for the service principal.
- The AKS cluster itself using the `azure.containerservice.KubernetesCluster` class.
- A reference to the `kubeconfig` is exported, which allows for interacting with the AKS cluster outside of Pulumi.
- A Kubernetes provider is set up with the kubeconfig of the AKS cluster.
- The Stakater Notify-Slack Helm chart deployment into the AKS cluster, specifying the chart version and Slack webhook URL.
- An output for the chart status is exported.

Please make sure to replace placeholders, such as the SSH public key, service principal password, and Slack webhook URL, with actual valid data. You will then be able to run `pulumi up` to deploy this stack. Remember to review the preview and select "yes" to proceed with the deployment.