Deploy the mqtt-connector helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the MQTT Connector Helm chart on an AWS EKS cluster using Pulumi, you will need to perform the following steps:

1. Provision an EKS cluster 
2. Deploy the MQTT Connector Helm chart to the EKS cluster.

The EKS cluster will serve as the environment for running our services, while the Helm chart is the package that contains pre-configured Kubernetes resources for the MQTT Connector.

For provisioning the EKS cluster, the `pulumi/eks` package, which is a high-level component, provides a simple, declarative interface for creating and managing an EKS cluster.

For deploying the Helm chart, you will use the `pulumi/kubernetes` package, which provides the `helm.v3.Chart` resource to deploy Helm charts.

Here's a detailed program written in TypeScript that performs these operations:

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

// Create an EKS cluster.
const cluster = new eks.Cluster("my-cluster", {
    desiredCapacity: 2,
    minSize: 1,
    maxSize: 3,
    instanceType: "t2.medium",
    providers: { kubernetes: new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeconfig }) },
});

// Deploy the mqtt-connector Helm chart into the EKS cluster.
const mqttConnectorChart = new k8s.helm.v3.Chart("mqtt-connector", {
    chart: "mqtt-connector",
    // The repository where the helm chart is located.
    fetchOpts: {
        repo: "http://example.com/path/to/your/helm/charts", // Replace with the actual Helm chart repository URL.
    },
    namespace: "default", // You can specify the namespace or default will be used.
    // Set the values for the Helm chart.
    values: {
        // Replace these with actual values required by the mqtt-connector Helm chart.
        service: {
            type: "LoadBalancer",
        },
    },
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeconfig }) });

// Export the kubeconfig of the cluster and the service endpoint of mqtt-connector.
export const kubeconfig = cluster.kubeconfig;
export const mqttConnectorEndpoint = mqttConnectorChart
    .getResourceProperty("v1/Service", "default", "mqtt-connector-mqtt-svc", "status")
    .apply(status => status.loadBalancer.ingress[0].hostname || status.loadBalancer.ingress[0].ip);
```

Let's explain the code step by step:

- We import the necessary Pulumi packages for AWS, EKS, and Kubernetes.

- We create an EKS cluster using the `eks.Cluster` resource with the desired capacity and instance types suitable for our use case. Adjust these settings based on the workload you expect on the MQTT Connector.

- We use a `kubernetes.Provider` which is instantiated with our newly created EKS cluster's `kubeconfig`. This tells Pulumi to use this cluster when deploying Kubernetes resources.

- Next, we create a Helm chart resource using `k8s.helm.v3.Chart`. This will manage the deployment of the MQTT Connector in our EKS cluster. You need to replace `http://example.com/path/to/your/helm/charts` with the actual URL of the repository that hosts the MQTT Connector Helm chart.

- We specify the namespace where the chart will be installed. If not specified, it defaults to `default`.

- We pass in certain values required by the MQTT Connector Helm chart, such as the service type. The `values` object may contain additional configuration parameters required for customizing the MQTT Connector.

- Finally, we export the `kubeconfig` of the EKS cluster, which you can use to interact with your cluster with `kubectl`. We also export the MQTT Connector service endpoint, which gives you the URL to access your MQTT Connector once it's up and running.

Please note that this is a starting point for deploying an MQTT connector. You should modify the `values` field with the appropriate values specific to the MQTT connector you are deploying, as Helm charts can have a wide array of configurable settings.

Remember to replace the placeholder repository URL `"http://example.com/path/to/your/helm/charts"` with the actual URL to the MQTT Connector Helm chart you wish to deploy. If you have your Helm chart package already, you may also specify a local path to the chart instead of a repository URL.