Deploy the pgdump-to-s3 helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the `pgdump-to-s3` Helm chart on Oracle Kubernetes Engine (OKE) using Pulumi, you'll need to perform a few steps:

1. Set up your Pulumi project and write the code to deploy the Helm chart.
2. Ensure that your OKE cluster is already configured and accessible with `kubectl`.
3. Use the Pulumi's Kubernetes provider to deploy the Helm chart to your OKE cluster.

The following Pulumi program in TypeScript will allow you to do this:

- First, you need to install the necessary packages:
  - `@pulumi/pulumi`: The core Pulumi SDK.
  - `@pulumi/oci`: The Pulumi provider for Oracle Cloud Infrastructure (OCI).
  - `@pulumi/kubernetes`: The Pulumi provider to interact with Kubernetes.

You can install them using npm or yarn:

```shell
npm install @pulumi/pulumi @pulumi/oci @pulumi/kubernetes
```

or

```shell
yarn add @pulumi/pulumi @pulumi/oci @pulumi/kubernetes
```

- After installing the packages, write a Pulumi program like the one below:

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

// Initialize OCI provider with necessary configs
// You would need to have appropriate credentials and configuration for the OCI provider
const provider = new oci.Provider('oci-provider', {
    // Provide your OCI configuration details here:
    // region: 'us-ashburn-1',
    // tenancyOcid: '',
    // userOcid: '',
    // privateKey: '',
    // fingerprint: '',
    // compartmentOcid: ''
});

// Here you should reference your existing OKE cluster
const okeCluster = oci.containerengine.getCluster({
    // You should provide your existing OKE cluster ID
    clusterId: 'YOUR_OKE_CLUSTER_ID',
}, { provider });

// Assume the kubeconfig is available or can be constructed from other available sources
const kubeconfig = okeCluster.kubeconfig;

// Create a Kubernetes provider instance using the kubeconfig from the OKE cluster
const k8sProvider = new k8s.Provider('oke-k8s-provider', {
    kubeconfig: kubeconfig,
});

// Deploy the `pgdump-to-s3` Helm chart
const pgdumpToS3Chart = new k8s.helm.v3.Chart('pgdump-to-s3', {
    // Replace with the correct repository and chart details
    chart: 'pgdump-to-s3',
    version: 'CHART_VERSION', // specify the version of chart
    fetchOpts: {
        // If the Helm chart is in a custom repository, provide repo URL
        // repo: 'https://charts.my-org.com/',
    },
    // Provide appropriate values for the Helm chart
    values: {
        // These would be specific to the `pgdump-to-s3` chart you are deploying
        // database: {
        //     host: 'db.example.com',
        //     name: 'mydb',
        // },
        // s3: {
        //     bucket: 'my-s3-bucket',
        //     accessKey: 'AKIAIOSFODNN7EXAMPLE',
        //     secretKey: 'wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY',
        //     region: 'us-west-2',
        // },
    },
}, { provider: k8sProvider });

// To access the Helm chart after deployment, you can export any relevant endpoint details
export const chartName = pgdumpToS3Chart.metadata.name;
```

This Pulumi program starts by importing the necessary Pulumi packages. It then initializes an OCI provider with the appropriate credentials and configurations. Make sure you fill in your details in the OCI provider configuration, such as the region, tenancy OCID, user OCID, etc.

Next, the program grabs the `kubeconfig` from your OKE cluster. This config is used to set up a Kubernetes provider, which Pulumi uses to communicate with your Kubernetes cluster to deploy resources.

The `pgdump-to-s3` Helm chart is deployed using the `k8s.helm.v3.Chart` class. You have to specify the chart and version, along with any custom `fetchOpts` if your Helm chart is hosted in a custom repository. The `values` object should be populated with the configuration required by the `pgdump-to-s3` chart, such as database credentials and S3 details.

Finally, the program exports the name of the Helm chart as a stack output, which can be used for reference.

Keep in mind that the above program assumes you have preconfigured your Pulumi CLI with OCI credentials and configured `kubectl` to communicate with the OKE cluster.

You'll run this program by executing Pulumi commands `pulumi up` to deploy the changes and `pulumi stack output chartName` to retrieve the exported chart name. Make sure you validate the Helm chart name `pgdump-to-s3` and include the correct version for the chart you want to deploy.