Deploy the minio-standalone helm chart on Google Kubernetes Engine (GKE)

Question

Pulumi · Accepted Answer

To accomplish your goal of deploying the minIO standalone Helm chart on Google Kubernetes Engine (GKE), we will create a Pulumi program in TypeScript. This program will perform the following steps:

1. Provision a GKE cluster using GCP's `container.Cluster` resource.
2. Deploy the MinIO Helm chart to the provisioned GKE cluster.

Let's break down the process:

First, you'd need to set up a new GKE cluster. We use `gcp.container.Cluster` to define a Kubernetes cluster.

Next, once the cluster is available, you can deploy applications using Helm charts. Pulumi has a resource `kubernetes.helm.v3.Chart` for this purpose, which allows deploying a Helm chart within a Kubernetes cluster.

Here's the Pulumi TypeScript program that performs both steps:

```typescript
import * as pulumi from '@pulumi/pulumi';
import * as gcp from '@pulumi/gcp';
import * as k8s from '@pulumi/kubernetes';

// Initialize GCP Config
const config = new pulumi.Config('gcp');
const project = config.require('project');
const zone = config.require('zone');

// Create a GKE cluster
const cluster = new gcp.container.Cluster('gke-cluster', {
    initialNodeCount: 2,
    nodeVersion: 'latest',
    minMasterVersion: 'latest',
    project: project,
    location: zone,
});

// Export the Kubeconfig
export const kubeconfig = pulumi.
    all([cluster.name, cluster.endpoint, cluster.masterAuth]).
    apply(([name, endpoint, masterAuth]) => {
        const context = `${project}_${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:
        access-token: ${masterAuth.token}
        cmd-args: config config-helper --format=json
        cmd-path: gcloud
        expiry-key: '{.credential.token_expiry}'
        token-key: '{.credential.access_token}'
      name: gcp
`;
    });

// The following command can be used to obtain the GKE credentials to use kubectl to interface with your cluster.
// pulumi stack output kubeconfig > kubeconfig.yaml
// You can make kubectl use this file as follows:
// export KUBECONFIG=./kubeconfig.yaml

// Create a provider for the above cluster
const clusterProvider = new k8s.Provider('gke-k8s', {
    kubeconfig: kubeconfig,
});

// Deploy MinIO Helm Chart
const minio = new k8s.helm.v3.Chart('minio', {
    chart: 'minio',
    version: '8.0.10', // specify the version of the Helm chart
    namespace: 'default',
    fetchOpts:{
        repo: "https://helm.min.io/", // MinIO Helm Chart repository
    },
    values: {
        accessKey: 'your-minio-access-key', // replace with your values or generate them
        secretKey: 'your-minio-secret-key', // replace with your values or generate them
        resources: {
            requests: {
                memory: "2Gi",
                cpu: "2"
            }
        },
        persistence: {
            size: "10Gi"
        }
    }
}, { provider: clusterProvider });

// Export the MinIO IP address to access the MinIO web interface or REST API. It might take a couple of minutes to be reachable.
export const minioIp = minio.getResourceProperty('v1/Service', 'minio', 'status').apply(status => status.loadBalancer.ingress[0].ip);
```

- This program starts by importing the necessary modules for Pulumi, GCP, and Kubernetes.
- We define our GCP project and zone, then create a GKE cluster using those values.
- We export the Kubeconfig which can be used with kubectl to interact with your new GKE cluster.
- We create a Kubernetes Provider which tells Pulumi how to communicate with the GKE cluster.
- We deploy the MinIO Helm chart to the `default` namespace using `k8s.helm.v3.Chart`.
  - Make sure you replace `'your-minio-access-key'` and `'your-minio-secret-key'` with the actual credentials you want to use for MinIO. These should be kept secret and not exposed.
- Finally, we export the IP address of the MinIO service, which will allow you to access the MinIO web interface once it's set up.

For more comprehensive details, you can refer to the Pulumi documentation for:

- [Google Cloud GKE Cluster](https://www.pulumi.com/docs/reference/pkg/gcp/container/cluster/)
- [Kubernetes Helm Release](https://www.pulumi.com/docs/reference/pkg/kubernetes/helm/v3/chart/)

Remember to run `npm install @pulumi/pulumi @pulumi/gcp @pulumi/kubernetes` to install the necessary packages for this Pulumi program if it's a new project.