Configure Keycloak with PG SQL for role based authentication

docker-compose.yml

version: '3.4'

volumes:
  postgres_data:
    driver: local

services:
  postgres:
    image: postgres:14.1
    container_name: keycloak-nodejs-example-postgres
    volumes:
      - postgres_data:/var/lib/postgresql/data
    environment:
      POSTGRES_PASSWORD: root
      POSTGRES_DB: keycloak
      POSTGRES_USER: keycloak

  keycloak:
    image: jboss/keycloak:15.0.2
    container_name: keycloak-nodejs-example-keycloak
    environment:
      DB_VENDOR: POSTGRES
      DB_ADDR: postgres
      DB_DATABASE: keycloak
      DB_USER: keycloak
      DB_PASSWORD: root
      KEYCLOAK_USER: admin
      KEYCLOAK_PASSWORD: admin
    command:
      - "-Dkeycloak.profile.feature.upload_scripts=enabled"
      - "-Dkeycloak.migration.action=import"
      - "-Dkeycloak.migration.provider=dir"
      - "-Dkeycloak.migration.dir=/opt/jboss/keycloak/import"
      - "-Dkeycloak.migration.strategy=OVERWRITE_EXISTING"
    ports:
      - 8080:8080
    volumes:
      - "./docker/import_realm_users:/opt/jboss/keycloak/import"
    depends_on:
      - postgres

      - "-Dkeycloak.migration.action=import" // This command will allow to import of data from specified sources from to keycloak
      - "-Dkeycloak.migration.provider=dir" // Import data from the directory 
      - "-Dkeycloak.migration.dir=/opt/jboss/keycloak/import" // Specify directory to import data
      - "-Dkeycloak.migration.strategy=OVERWRITE_EXISTING" // If data is conflicting with existing data it will override existing data when this command enables 

Role-Based Authentication System

This project implements a role-based authentication system using Node.js, Keycloak, and PostgreSQL.

Steps to Implement

1. Setup PostgreSQL Database

• Install PostgreSQL
• Create a new database
• Create users and roles tables
• Insert users and roles data

2. Setup Keycloak

• Install Keycloak
• Create a new realm
• Create roles (admin, manager, editor)
• Create users and assign them roles

3. Setup Node.js Application

• Initialize a new Node.js project
• Install necessary packages (express, keycloak-connect, pg)

4. Integrate Keycloak with Node.js

• Configure keycloak-connect middleware in your Node.js application
• Protect your routes with Keycloak

5. Implement Role-Based Access Control (RBAC)

• Create middleware to check the user's role
• Use this middleware in your routes