How to setup domain and SSL for the keycloak droplet?

I got it running by creating a new docker container with this command

docker run -d \
  --name keycloak-domain \
  --network host \
  -e KEYCLOAK_ADMIN=admin \
  -e KEYCLOAK_ADMIN_PASSWORD=<Your_Password> \
  -e KC_HOSTNAME=<Your_TLD> \
  -e KC_HTTP_ENABLED=true \
  -e HTTP_ADDRESS_FORWARDING=true \
  -e KC_DB=postgres \
  -e KC_DB_URL=jdbc:postgresql://localhost:5432/keycloak \
  -e KC_DB_USERNAME=keycloak \
  -e KC_DB_PASSWORD=<Your_DB_Password> \
  -e KC_PROXY_HEADERS=xforwarded \
  local-keycloak \
  start \
  --https-key-store-password=<Your_Key_Store_Password> \
  --optimized >> /var/temp.log

Also the nginx setup was wrong. This guide was actually the solution.

https://du.nkel.dev/blog/2024-02-10_keycloak-docker-compose-nginx/

Hey there! 👋

The DigitalOcean KeyCloak Droplet uses the official Docker image, you can check out the documentation here:

https://www.keycloak.org/getting-started/getting-started-docker

The overall process, should look as follows: Before you run the certbot command you need to make sure your domain points to your Droplet’s IP address:

• Add an A record in your DNS settings pointing your domain (e.g., example.com) to your Droplet’s public IP.
• If you’re using DigitalOcean to manage your DNS, it should look like this:

👉 Guide: How to Manage Domains in DigitalOcean

Now if you have already done that, you need to configure Nginx to properly handle your domain:

1. SSH into your Droplet:

   ssh root@<your-droplet-ip>
   

2. Create a new server block configuration file for your domain:

   nano /etc/nginx/sites-available/example.com
   

3. Add the following configuration to the file:

   server {
       listen 80;
       server_name example.com www.example.com;
   
       location ~ /.well-known {
           allow all;
       }
   
       location / {
           proxy_pass https://localhost:8443;
           proxy_set_header Host $host:8443;
           proxy_set_header X-Real-IP $remote_addr;
           proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
           proxy_set_header X-Forwarded-Proto $scheme;
       }
   }
   
   server {
       listen 9001;
       server_name example.com www.example.com;
   
       location ~ /.well-known {
           allow all;
       }
   
       location / {
           proxy_pass https://localhost:9000;
           proxy_set_header Host $host:9000;
           proxy_set_header X-Real-IP $remote_addr;
           proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
           proxy_set_header X-Forwarded-Proto $scheme;
       }
   }
   

4. Enable the server block by creating a symbolic link:

   ln -s /etc/nginx/sites-available/example.com /etc/nginx/sites-enabled/
   

5. Test Nginx and reload:

   nginx -t
   systemctl reload nginx
   

After that, the Keycloak Droplet comes with Certbot pre-installed, making it super easy to set up HTTPS:

1. Run the Certbot command:

   certbot --nginx -d example.com -d www.example.com
   

2. Follow the prompts to complete the certificate setup. Certbot will automatically update your Nginx configuration to redirect HTTP traffic to HTTPS.

3. Test the setup by visiting https://example.com in your browser.

---

Then on the Keycloak side, you need to inspect the Keycloak container to find the exact environment variables that need to be set to match your domain:

docker inspect keycloak

Note down the environment variables starting with KC_ and KEYCLOAK_ and mainly the KEYCLOAK_ADMIN_PASSWORD, KC_DB_PASSWORD and the YOUR_KEYSTORE_PASSWORD.

Then stop the container:

docker stop keycloak

Then you can create a new Keycloak container and pass the domain as an environment variable:

docker run -d \
  --name keycloak-domain \
  --network host \
  -e KEYCLOAK_ADMIN=admin \
  -e KEYCLOAK_ADMIN_PASSWORD=<YOUR_ADMIN_PASSWORD> \
  -e KC_HOSTNAME=example.com \
  -e KC_HOSTNAME_STRICT=true \
  -e KC_HOSTNAME_STRICT_HTTPS=true \
  -e KC_DB=postgres \
  -e KC_DB_URL=jdbc:postgresql://localhost:5432/keycloak \
  -e KC_DB_USERNAME=keycloak \
  -e KC_DB_PASSWORD=<YOUR_DB_PASSWORD> \
  local-keycloak \
  start \
  --https-key-store-password=<YOUR_KEYSTORE_PASSWORD> \
  --optimized

Here is an example of this running on my Droplet:

Let me know how it goes.

- Bobby