Deploy the laravel-helm helm chart on Linode Kubernetes Engine

Question

Pulumi · Accepted Answer

To deploy the Laravel Helm chart on Linode Kubernetes Engine, we'll walk through the process in steps. We'll use Pulumi to interface with Linode's Kubernetes service and deploy a Helm chart.

Here's what we're going to do:

1. **Set up the Linode Kubernetes Engine (LKE) cluster**: We'll create a Kubernetes cluster on Linode using Pulumi's Kubernetes provider.
2. **Configure Kubeconfig**: Once the cluster is available, we'll obtain the Kubeconfig information that allows us to interact with the Kubernetes cluster.
3. **Deploy the Laravel Helm Chart**: With the cluster set up and Kubeconfig in hand, we'll install the Laravel Helm chart to the cluster.

First, we'll need to import the necessary Pulumi and Kubernetes packages to work with TypeScript:

- `@pulumi/pulumi`: The core Pulumi package which we use to define resources and outputs.
- `@pulumi/kubernetes`: To enable communication with our Kubernetes cluster.
- `@pulumi/linode`: To manage resources in Linode cloud services.

Now, let's write the Pulumi TypeScript code to accomplish this setup:

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

// Step 1: Create a new Linode Kubernetes Engine (LKE) cluster
const cluster = new linode.LkeCluster("my-lke-cluster", {
    region: "us-central", // You can change the region as needed
    k8sVersion: "1.21", // Specify your desired Kubernetes version
    label: "my-lke-cluster",
    // Define the pool where your nodes will be created.
    pools: [{
        count: 2, // Number of nodes in the pool
        type: "g6-standard-2" // The type of Linode instances (this type may vary)
    }],
});

// Step 2: Obtain Kubeconfig for the production cluster
const kubeconfig = pulumi.
    all([cluster.id, cluster.kubeconfig]).
    apply(([_, kubeconfig]) => kubeconfig);

// Step 3: Deploy the Laravel Helm Chart
// The Helm chart for Laravel can be found in the Bitnami repository, or you might have your custom one.
const laravelChart = new k8s.helm.v3.Chart("laravel", {
    chart: "laravel",
    version: "6.0.1", // Use the version of the Helm chart that you want to deploy
    fetchOpts: { repo: "https://charts.bitnami.com/bitnami" }, // The repository where the Laravel Helm chart is located
    // You can pass configuration parameters for the Laravel Helm chart using 'values'.
    // Below is an example of how you might configure the service type and Laravel environment settings.
    values: {
        service: {
            type: "ClusterIP",
        },
        laravel: {
            env: {
                allowEmptyPassword: "yes",
            },
        },
    },
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig }) });

// Export the Kubeconfig to be able to interact with the Kubernetes cluster using kubectl
export const outputKubeconfig = kubeconfig;

// If you need to access the Laravel application externally,
// you might need to set up an ingress or modify the service type to LoadBalancer.
```

Make sure to replace `'us-central'` with the correct region for your needs and `'1.21'` with the version of Kubernetes you want to use.

This code does three things:

1. It creates a Linode Kubernetes Engine cluster with two nodes.
2. It fetches the kubeconfig from the created cluster so you can interact with the cluster.
3. It deploys the Laravel Helm Chart from Bitnami's Helm repository to the cluster.

Now, you'll want to install the necessary Pulumi packages by running:

```
npm install @pulumi/pulumi @pulumi/kubernetes @pulumi/linode
```

To deploy this code, you need to have Pulumi CLI installed and configured with your Linode access token. Once that's done, run:

```
pulumi up
```

This command will provision the LKE cluster and deploy the Laravel application. Keep in mind that provisioning infrastructure can take several minutes. After successful deployment, use the exported kubeconfig to manage the Kubernetes cluster via kubectl or other Kubernetes tools.

Please note that the code provided assumes a Helm chart for Laravel is available in the Bitnami chart repository. If your Laravel application has its own Helm chart or specific configurations, you'll need to adjust the `chart`, `version`, and `values` in the above code accordingly.