Deploy the keycloak-setup helm chart on AWS EKS

Question

Pulumi · Accepted Answer

To deploy the `keycloak-setup` Helm chart on AWS Elastic Kubernetes Service (EKS), we will go through the process step by step. The process involves setting up an EKS cluster and then deploying the Helm chart onto it.

First, we'll need to create an EKS cluster. The EKS cluster will be the Kubernetes environment where your Keycloak instance will run. Pulumi's EKS package simplifies the creation of an EKS cluster.

Once the EKS cluster is in place, we'll use the `kubernetes` package from Pulumi to deploy the `keycloak-setup` Helm chart to it. You need to make sure you have the right Helm chart available and know the necessary configuration parameters for your Keycloak setup.

Here's an example of how you might write this Pulumi program in TypeScript:

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

// Create an EKS cluster with the desired settings
const cluster = new eks.Cluster("my-cluster", {
    // Specify the desired version of Kubernetes for your EKS cluster here
    version: "1.21",
    // Define other parameters like the desired node size, min/max scaling size, etc.
    instanceType: "t2.medium",
    desiredCapacity: 2,
    minSize: 1,
    maxSize: 3,
});

// Export the cluster's kubeconfig.
export const kubeconfig = cluster.kubeconfig;

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

// Deploy the keycloak-setup Helm chart to the EKS cluster
const keycloakChart = new k8s.helm.v3.Chart("keycloak-setup", {
    chart: "keycloak",
    version: "11.0.1", // Define the chart version; ensure it's a valid Keycloak chart version
    fetchOpts: {
        repo: "https://codecentric.github.io/helm-charts", // Set the Helm chart repository
    },
    // You can provide additional configuration for Keycloak here using the 'values' property
    values: {
        // Custom values to configure Keycloak
    },
}, { provider });

// Export the endpoint of the Keycloak instance
export const keycloakEndpoint = keycloakChart.getResourceProperty("v1/Service", "keycloak-setup-keycloak-http", "status").apply(s => `http://${s.loadBalancer.ingress[0].hostname}`);
```

In this program, we are using the `@pulumi/eks` package to create a cluster. We set properties such as `version`, `instanceType`, `desiredCapacity`, `minSize`, and `maxSize` to configure our cluster. You can modify these values according to your requirements. Be sure to check [Pulumi EKS Cluster](https://www.pulumi.com/registry/packages/eks/api-docs/cluster/) documentation for additional configurations you might need.

After we've set up the cluster, we set up a `Provider` using the kubeconfig generated by the cluster, which allows Pulumi to communicate with our cluster.

The `keycloak-setup` Helm chart is then deployed using Pulumi's `Chart` resource from the `@pulumi/kubernetes` package, which is a way to deploy packaged applications to Kubernetes. You need to specify the chart version you wish to install and also the Helm repository URL where the chart can be found. Here, the `values` property would be a place where you can put the configuration for your Keycloak setup like a database configuration, replicas, resource requirements, etc. Check the Helm chart's documentation for the supported values.

Finally, we export the `kubeconfig` required to manage the Kubernetes cluster with `kubectl` and the Keycloak endpoint so that you can access the Keycloak UI from a web browser.

You'll need to install the Pulumi CLI, set up your AWS credentials, and then run `pulumi up` to deploy this code to AWS.

Remember, deploying infrastructure like an EKS cluster results in actual cloud resources being created and managed by AWS, which may incur costs. Always review the execution plan that `pulumi up` provides before confirming the deployment to understand what actions Pulumi will take and what resources will be created.