Deploy the twistlock-defender helm chart on Google Kubernetes Engine (GKE)

Question

Pulumi · Accepted Answer

To deploy the Twistlock Defender Helm chart on a Google Kubernetes Engine (GKE) cluster using Pulumi, you'll need to perform the following steps:

Create a GKE cluster, if you don't already have one.
Install and configure kubectl to communicate with the cluster.
Set up a Helm chart repository which contains the Twistlock Defender chart.
Use Pulumi's Helm support to deploy the chart to the GKE cluster.

We'll use the @pulumi/gcp package to create a GKE cluster and configure Kubernetes provider to connect to it. Then we'll use @pulumi/kubernetes to deploy the Helm chart.

Below is a program that puts these steps together:

import * as pulumi from "@pulumi/pulumi";
import * as gcp from "@pulumi/gcp";
import * as k8s from "@pulumi/kubernetes";

// Step 1: Creating the GKE cluster. Provide the necessary configuration for the cluster.
const cluster = new gcp.container.Cluster("pulumi-gke-cluster", {
    initialNodeCount: 2,
    nodeVersion: "latest",
    minMasterVersion: "latest",
    nodeConfig: {
        machineType: "n1-standard-1",
        oauthScopes: [
            "https://www.googleapis.com/auth/compute",
            "https://www.googleapis.com/auth/devstorage.read_only",
            "https://www.googleapis.com/auth/logging.write",
            "https://www.googleapis.com/auth/monitoring",
        ],
    },
});

// Step 2: Export the GKE cluster details and configure `kubectl`. 
export const kubeconfig = pulumi.all([cluster.name, cluster.endpoint, cluster.masterAuth]).apply(([name, endpoint, masterAuth]) => {
    const context = `${gcp.config.project}_${gcp.config.zone}_${name}`;
    return `apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: ${masterAuth.clusterCaCertificate}
    server: https://${endpoint}
  name: ${context}
contexts:
- context:
    cluster: ${context}
    user: ${context}
  name: ${context}
current-context: ${context}
kind: Config
preferences: {}
users:
- name: ${context}
  user:
    auth-provider:
      config:
        cmd-args: config config-helper --format=json
        cmd-path: gcloud
        expiry-key: '{.credential.token_expiry}'
        token-key: '{.credential.access_token}'
      name: gcp
`;
});

// Step 3: Configure the Kubernetes provider to use the GKE cluster.
const k8sProvider = new k8s.Provider("k8s-provider", {
    kubeconfig: kubeconfig,
});

// Step 4: Deploy the Twistlock Defender Helm chart
const twistlockDefenderChart = new k8s.helm.v3.Chart("twistlock-defender", {
    chart: "twistlock-defender",
    version: "<Enter desired chart version>", // Specify the version of Twistlock Defender
    fetchOpts:{
        repo: "<Enter Helm chart repo url>", // Specify Helm chart repository URL
    },
}, { provider: k8sProvider });

// Export the Kubernetes provider's kubeconfig so you can interact with your cluster via `kubectl`.
export const kubeconfigOutput = kubeconfig;

Explanation:

In the first step, we create a new GKE cluster by using the gcp.container.Cluster resource. We define the initial node count, the versions, and the machine types for the node pool.
After the cluster is created, we generate a kubeconfig file. This snippet can be used to configure kubectl to interact with your GKE cluster. It's important to note that if you're running this code outside of a GCP environment, you'll have to configure your local gcloud and kubectl command-line tools with appropriate credentials.
We then set up the Kubernetes provider to use the generated kubeconfig. This step configures the provider so that Pulumi works with our newly created GKE cluster.
For the fourth step, we declare a new Helm Chart resource. The twistlock-defender Helm chart is created with your specified version and fetched from the provided repository URL. Be sure to replace <Enter desired chart version> with the specific chart version number you wish to deploy and <Enter Helm chart repo url> with the URL of the Helm repository that contains the Twistlock Defender chart.

Finally, we export the kubeconfig, which can then be used for manual interactions with the cluster via kubectl.

Please replace placeholders with the actual values you want to use, such as the chart version and Helm repository URL. You will also need access to the Twistlock Defender Helm chart, which may require access credentials or a specific setup provided by Twistlock (now called Prisma Cloud by Palo Alto Networks). Make sure you fulfill these requirements before proceeding with the deployment.