Deploy the rabbitmq-ha helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the rabbitmq-ha Helm chart on Oracle Kubernetes Engine (OKE), we are going to need to work with a couple of Pulumi resources.

We are going to use the kubernetes Pulumi provider because that allows us to interact with Kubernetes clusters and deploy resources to them, such as Helm charts. The specific resource from the kubernetes provider we'll use is helm.v3.Chart, which is a resource that allows us to deploy Helm charts.

For this deployment, you will need an existing Kubernetes cluster on Oracle OKE. This code assumes that you've already configured the Pulumi Kubernetes provider to interact with your OKE cluster.

Here's an example program written in TypeScript, which you could use to deploy the rabbitmq-ha Helm chart to your OKE cluster:

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

// Create a new instance of the kubernetes provider for OKE
const okeK8sProvider = new kubernetes.Provider("okeK8sProvider", {
    kubeconfig: "<Your OKE cluster kubeconfig>",
});

// Deploy the rabbitmq-ha Helm chart
const rabbitmqHaChart = new kubernetes.helm.v3.Chart("rabbitmq-ha", {
    chart: "rabbitmq-ha",
    version: "1.44.8", // specify the chart version you want to deploy
    fetchOpts: {
        repo: "https://kubernetes-charts.storage.googleapis.com/", // RabbitMQ Helm repo URL
    },
}, { provider: okeK8sProvider });

// Export the RabbitMQ service endpoint
export const rabbitmqEndpoint = rabbitmqHaChart.getResourceProperty("v1/Service", "rabbitmq-ha", "status");

In this program:

We import the necessary Pulumi packages for the operation.
We instantiate a Kubernetes provider for Oracle Kubernetes Engine by passing in the kubeconfig that corresponds to the OKE cluster. Note that you'll need to replace <Your OKE cluster kubeconfig> with the actual kubeconfig contents or the path to your kubeconfig file.
We deploy the rabbitmq-ha Helm chart using the kubernetes.helm.v3.Chart class. We specify the chart name and version, and the Helm repository URL where the chart can be found. Here, the version 1.44.8 is an example, and you should replace it with the actual version you intend to deploy.
Lastly, we export the RabbitMQ service endpoint using getResourceProperty, which enables us to query a resource's properties, such as the endpoint of the RabbitMQ service. The output can be useful to access the RabbitMQ instance post-deployment.

Make sure the Helm repository URL points to the location where the rabbitmq-ha chart is actually located, as it may change over time.

After you write this program in a file (e.g., index.ts), you can deploy it by running pulumi up in your terminal.

Remember, you must have Pulumi installed, configured with the appropriate cloud credentials for OKE, and you should have node.js and npm installed to run TypeScript programs. Make sure to install the required packages using npm before running Pulumi:

npm install @pulumi/kubernetes

Also, keep in mind that Helm charts can have a lot of configurable values, and you may need to customize the deployment based on your specific needs. You can specify these customization under the values property of the Chart resource if needed.