Deploy the kafka-topics-ui helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the Kafka Topics UI Helm chart on OpenShift, you will be using Pulumi's Kubernetes package to manage deployments through Helm charts. Pulumi provides a `Chart` resource as part of its Kubernetes provider to encapsulate a Helm chart deployment.

Kafka Topics UI is a user interface that allows you to view and manage the topics in your Kafka cluster. To deploy this using Pulumi, follow these steps:

1. Set up your Pulumi project and the Kubernetes provider. Ensure you have OpenShift configured as your Kubernetes cluster in your current context.

2. Define a `Chart` resource in your Pulumi program to deploy Kafka Topics UI using the respective Helm chart.

3. Specify any additional configuration parameters that you may need for the Kafka Topics UI chart.

Here's a TypeScript program that uses Pulumi to deploy the Kafka Topics UI Helm chart on OpenShift:

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

// Define the Kafka Topics UI Helm chart.
const kafkaTopicsUIChart = new k8s.helm.v3.Chart('kafka-topics-ui', {
    chart: "kafka-topics-ui",
    // Replace 'your-repo-name' with the name of the Helm repository that contains the Kafka Topics UI chart.
    // If the Helm chart is part of a Helm repository, you must first add that repository using 'helm repo add', 
    // refer to the Pulumi documentation for helm charts: 
    // https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm/v3/chart/
    repo: "your-repo-name",
    // Version of the Kafka Topics UI Helm chart you want to deploy.
    // Make sure to specify the version that is compatible with your Kafka cluster.
    version: "your-chart-version",
    // Namespace where you want to deploy the Kafka Topics UI.
    // Ensure that the namespace exists in your OpenShift cluster.
    namespace: "your-namespace",
    // Values to pass to the Helm chart, you need to specify connection details to your Kafka cluster.
    // Replace the placeholder values with the actual values for your Kafka cluster connection.
    values: {
        kafkaRestProxyUrl: "http://your-kafka-rest-proxy:8082",
        kafkaSchemaRegistryUrl: "http://your-schema-registry:8081"
    },
    // Enable transformation on the resources generated by this Chart before
    // the resources are created on the cluster. 
    // This can be useful for example to add labels or namespace to every resource.
    transformations: [
        (resource: any) => {
            if (resource.metadata.labels) {
                resource.metadata.labels['deployedBy'] = 'pulumi';
            } else {
                resource.metadata.labels = { deployedBy: 'pulumi' };
            }
        }
    ]
}, { provider: k8sProvider }); // You need to provide an instance of the Kubernetes Provider that points to your OpenShift cluster.

// Export the base URL for the Kafka Topics UI so you can easily access it.
export const kafkaTopicsUIBaseUrl = `http://${kafkaTopicsUIChart.getResourceProperty('v1/Service', 'kafka-topics-ui', 'status')}.loadBalancer.ingress[0].hostname`;
```

In this program, you must replace the placeholders with the actual values relevant to your OpenShift cluster:

- `your-repo-name`: The name of the Helm repository that hosts the Kafka Topics UI chart. If the chart is not in a public repository, make sure to add it to Helm with `helm repo add` and then specify the name you used here.
- `your-chart-version`: The version of the Kafka Topics UI Helm chart you wish to deploy. You can find this in the chart repository or in the documentation for the Kafka Topics UI chart.
- `your-namespace`: The namespace in OpenShift where you want to deploy Kafka Topics UI. Create the namespace if it does not already exist in your cluster.
- `kafkaRestProxyUrl`: The URL to your Kafka REST proxy.
- `kafkaSchemaRegistryUrl`: The URL to your Kafka Schema Registry.

The `transformations` field adds a custom label to all resources deployed by this chart, which can help you identify the resources managed by Pulumi in your cluster.

After you finish setting up the program, you can run `pulumi up` from the command line to deploy the Kafka Topics UI to your OpenShift cluster.

Remember to check the documentation for the Kafka Topics UI Helm chart for any additional values and configurations that you might need to specify. Each Helm chart can have specific customizations for deployment.