During the first access, Keycloak 18.0.2 will present a web-based form to create the initial administrator user. Do not lose these credentials.
Last verified: All links working as of this post. Keycloak 18.0.2 remains available on GitHub indefinitely under their release policy.
sudo useradd -r -s /bin/false keycloak sudo chown -R keycloak:keycloak /opt/keycloak keycloak 18.0.2 download
# Download wget https://github.com/keycloak/keycloak/releases/download/18.0.2/keycloak-18.0.2.tar.gz
If you specifically need 18.0.2 but can’t access GitHub, try the archive: https://archive.keycloak.org/ – though this is less common. During the first access, Keycloak 18
For automation scripts or verification purposes, using GitHub is often preferred. You can find the release under the keycloak/keycloak repository tags.
While newer versions like Keycloak 26.6 are available for modern deployments, specific legacy environments often require Keycloak 18.0.2 for compatibility or staged migrations. Releases · keycloak/keycloak - GitHub Keycloak 18
This is the recommended method for modern deployments, ensuring the environment is isolated and reproducible.
./kc.sh add-user -u admin -p mysecurepassword
Use 18.0.2 only in air-gapped or internal environments. Do not expose it directly to the public internet without a reverse proxy (like Nginx or Cloudflare) to add additional security layers.