Deploy the oidc-gateway helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the `oidc-gateway` Helm chart on Azure Kubernetes Service (AKS), we will follow these steps using Pulumi:

1. **Create an AKS Cluster**: This is where your application will be hosted. We'll set up a Kubernetes cluster in Azure using the `ProvisionedCluster` resource from the `azure-native` package.

2. **Install the Helm chart**: We'll use the `Chart` resource from the `kubernetes` package to install the `oidc-gateway` Helm chart on our AKS cluster.

Before running this Pulumi program, you'll need to ensure you have the following prerequisites:

- An Azure account and subscription.
- The Azure CLI installed and logged into your account.
- The `kubectl` command-line tool installed.
- Pulumi installed and set up to work with Azure.

Here's a Pulumi program to deploy the `oidc-gateway` Helm chart on an AKS cluster:

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

// Replace these variables with your own desired settings
const resourceGroupName = "myResourceGroup";
const clusterName = "myAksCluster";
const oidcGatewayChartVersion = "1.2.3"; // Please specify the chart version you intend to deploy

// Create an Azure Resource Group
const resourceGroup = new azureNative.resources.ResourceGroup(resourceGroupName);

// Deploy an AKS cluster
const aksCluster = new azureNative.hybridcontainerservice.ProvisionedCluster(clusterName, {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    // Use the minimum settings for the cluster; you would want to customize this per your needs
    properties: {
        controlPlane: {
            vmSize: "Standard_DS2_v2", // You can choose the appropriate VM size
        },
        // Define additional required properties
    },
    tags: {
        "Name": "pulumi-aks-cluster"
    },
});

// Expose the kubeconfig for the AKS cluster
export const kubeconfig = pulumi.
    all([aksCluster.name, resourceGroup.name, aksCluster.properties.controlPlane.profile.kubeConfig()]).
    apply(([clusterName, resourceGroupName, result]) => {
        return result.kubeConfig;
    });

// Deploy the `oidc-gateway` Helm chart onto the AKS cluster
const oidcGateway = new kubernetes.helm.v3.Chart("oidc-gateway", {
    // Assuming the chart is in a Helm repository that has been added and is accessible
    repo: "my-helm-repo",
    chart: "oidc-gateway",
    version: oidcGatewayChartVersion,
    values: {
        // Specify any custom values needed for the `oidc-gateway` chart
    },
}, { provider: new kubernetes.Provider("k8s-provider", { kubeconfig }) });

// Export the public IP to access the `oidc-gateway`
export const oidcGatewayIp = oidcGateway.getResourceProperty("v1/Service", "oidc-gateway", "status").apply(status => status.loadBalancer.ingress[0]);

```

In the code above:

- `resourceGroup`: Represents the Azure Resource Group for our resources.
- `aksCluster`: This is an AKS cluster where we will deploy our Helm chart.
- `kubeconfig`: It's exported so that you can use `kubectl` to interact with your AKS cluster.
- `oidcGateway`: Represents the deployment of the `oidc-gateway` Helm chart on our AKS cluster. The `repo`, `chart`, and `version` fields should be replaced with the actual information of your Helm chart repository.

When you run the Pulumi program, it will provision the aforementioned resources in your Azure account. Note that in the `oidcGateway` Helm chart deployment, you need to provide the actual repository and chart details for `oidc-gateway`. You also need to input any additional required properties for the AKS cluster that might be necessary for your specific deployment.

Remember to check if the `oidc-gateway` chart requires any specific configuration in the `values` field and to replace the placeholder version with the actual chart version you plan to deploy.

After the program completes successfully, Pulumi will output the kubeconfig to connect to your new AKS cluster along with the IP address for accessing the `oidc-gateway`.

You can use the kubeconfig to configure kubectl:

```sh
pulumi stack output kubeconfig --show-secrets > kubeconfig.yaml
export KUBECONFIG=kubeconfig.yaml
```

And then use `kubectl` to interact with your AKS cluster:

```sh
kubectl get pods
```

To apply changes to your infrastructure, ensure you are logged in to your Azure account through the Azure CLI (`az login`), and then run `pulumi up` from your terminal. Pulumi will perform the diff and make the necessary changes to match the desired state described by your program.