Deploy the cicd helm chart on Linode Kubernetes Engine

Question

Pulumi · Accepted Answer

To deploy a Helm chart on Linode Kubernetes Engine using Pulumi, you will first need a Kubernetes cluster running on Linode. Then you can use the Helm Chart resource to deploy your CICD Helm chart.

Below is a Pulumi program written in TypeScript that demonstrates how to provision a Kubernetes cluster on Linode and then deploy a CICD Helm chart to it using the `@pulumi/kubernetes` package.

Before running this program, you must have set up Pulumi with the appropriate Linode access credentials and installed the necessary Pulumi packages for Linode and Kubernetes.

Here's what each part of the program does:
1. **Linode Kubernetes Cluster**: Provisions a new Kubernetes cluster on Linode using the Linode provider.
2. **Kubeconfig**: Gets the kubeconfig file from the newly created cluster.
3. **Helm Chart**: Deploys a generic CICD Helm chart into the cluster.

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

// Step 1. Create a Linode Kubernetes Cluster (LKE)
const cluster = new linode.LKECluster("my-cluster", {
    region: "us-central",
    k8sVersion: "1.20",
    nodePools: [{
        type: "g6-standard-2",
        count: 3,
    }],
});

// Step 2. Obtain the kubeconfig from the cluster, which we'll use to configure the Kubernetes provider
const kubeconfig = cluster.kubeconfig.rawConfig;

// Step 3. Deploy a CICD Helm chart on the cluster
const cicdChart = new k8s.helm.v3.Chart("my-cicd-chart", {
    repo: "my-chart-repo",  // Replace with the Helm chart repo name where your CICD chart is located
    chart: "cicd",          // Replace with the name of the CICD chart you want to deploy
    version: "1.0.0",       // Replace with the chart version you want to deploy
    namespace: "default",
    // You can specify the values for the Helm chart by using the `values` parameter
    values: {
        // Provide configuration values for the chart here. Example:
        // serviceType: "ClusterIP",
        // replicaCount: 2,
    },
}, { provider: new k8s.Provider("k8s-provider", {kubeconfig}) });

// Export the public IP of the CICD service (if accessible)
export const cicdServiceIP = cicdChart.getResourceProperty("v1/Service", "my-cicd-chart-cicd", "status")
    .apply(status => status.loadBalancer.ingress[0].ip);
```

The above Pulumi program will take the necessary steps to deploy the specified CICD Helm chart on an LKE cluster.

Make sure to replace `my-chart-repo` and `cicd` with the actual repository and chart name of your CICD solution. Also, customize `values` to match your desired CICD deployment specifications (this object should contain the configuration parameters supported by the CICD Helm chart).

After defining your program, you can deploy it using the regular Pulumi workflow:

1. Run `pulumi up` to preview and deploy the changes.
2. Confirm the deployment by reviewing the proposed changes and selecting `yes`.
3. Once the deployment is successful, the exported IP (if applicable) will be displayed.

This program defines a Pulumi stack that manages both the LKE cluster and the Helm chart deployment within the same program for simplicity of management and visibility into the infrastructure.