Keycloak LDAP User Federation Documentation
You link your directory to Keycloak by adding an LDAP provider in your realm. This keycloak ldap user federation documentation explains how to sync users and groups. Teams often use this setup to keep one central list of staff accounts. Admins map directory groups to broad roles so engineers can log in fast. When these roles are too wide, one user can touch every database table. A single mistake or bad query can then delete live data. How keycloak ldap user federation documentation explains di
Keycloak + Identity Federation: the complete guide
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You link your directory to Keycloak by adding an LDAP provider in your realm. This keycloak ldap user federation documentation explains how to sync users and groups. Teams often use this setup to keep one central list of staff accounts. Admins map directory groups to broad roles so engineers can log in fast. When these roles are too wide, one user can touch every database table. A single mistake or bad query can then delete live data.
How keycloak ldap user federation documentation explains directory sync
Keycloak connects to your LDAP server over a network link to read user records. You give Keycloak the server address and a bind account with read rights. You also tell Keycloak where to search for user accounts in the directory tree. When a user tries to log in, Keycloak checks their password against LDAP. It then pulls their profile details into its own local database. You can set up mappers to translate LDAP attributes into Keycloak user fields. Group mappers read directory groups and turn them into roles inside your realm. You can choose a read-only mode so Keycloak never writes back to LDAP. You can also set a timer to sync new staff changes on a schedule.
Why directory roles leave a gap during live sessions
Linking LDAP and Keycloak solves the problem of who can log in. When someone leaves the team, you disable their account in one place. Still, directory sync stops working the moment the login check finishes. It passes a static role to the target database or cloud console. That role decides access at the door, not what happens inside the room. Once an engineer opens a database session, LDAP cannot check their live queries. A user with write access can run a drop command without a second check. The directory also cannot mask sensitive fields like emails or card numbers in results. If a query pulls customer phone numbers, the raw text goes straight to the screen. Audit logs in Keycloak only show the login time, not the commands run later.
How to tighten directory groups before mapping roles
Start by breaking large engineering groups into smaller teams based on daily tasks. Give read-only roles to most staff for their daily debugging work. Keep write roles separate so users do not hold them all day. Check your group mappers often to make sure old test groups do not sync. Remove direct database accounts so every login must go through your central identity flow. Even with clean groups, someone will still need write access to fix a bug. That is where directory role mapping hits its limit and needs runtime checks.
Keycloak + Identity Federation: architecture patterns and best practices
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Govern statements and responses across databases and APIs
Good config and scoped roles are needed setup. They do not check single queries in flight or mask sensitive fields in returned rows. Across Postgres, MySQL, SQL Server, MongoDB, ClickHouse, Kubernetes APIs, SSH, and internal HTTP endpoints, hoop.dev runs beside each supported service as an open-source proxy, a sidecar for your database or API.
First, hoop.dev guardrails block banned queries before they run. Then hoop.dev data masking rewrites matched sensitive values in responses in memory. The audit trail records every statement and verdict per resource. Furthermore, hoop.dev holds SOC 2 Type II and is open source on GitHub.
Frequently asked questions
Does Keycloak store LDAP passwords in its own database?
No, Keycloak sends the password check back to the LDAP server during login. It imports basic profile fields like usernames and emails, but not the password hash.
What is the difference between read-only and writable edit modes?
Read-only mode stops Keycloak from changing any user details inside your LDAP directory. Writable mode lets password resets and profile updates in Keycloak write back to LDAP.
Can LDAP group mappers restrict specific SQL commands in a database?
No, LDAP mappers only assign general roles when a user logs into a tool. They cannot inspect live traffic, block a drop table command, or rewrite query results.