Create a Keycloak instance with a default realm and a service account

Establishing a Keycloak instance with a realm and default service account is essential for effectively managing authentication and authorization in modern applications. This comprehensive guide will demonstrate the step-by-step process to create a Keycloak instance, set up a default realm, and configure a default service account.

Prerequisites

Before we begin, ensure you have the following installed on your system:

• Docker or Podman
• Docker Compose or Podman Compose
• Code Repository: keycloak-default-sa

$ git clone https://github.com/akoserwal/keycloak-integrations.git

$ cd keycloak-default-sa/

In Figure 1.0, you can see the file structure of the directory, which includes the following files.

Figure 1.0 Directory structure

We will start with docker-before.yamlto demonstrate the steps required to reach the final setup:docker-compose.yaml with realm export realm-export.json and service account test-sa.json

Step 1: Deploying Keycloak using Docker Compose

Let's deploy a Keycloak instance using Docker Compose. We'll use the latest official Keycloak Docker image (current version: 25.0.2).