Bookstack Ldap Issues

The Problem BookStack LDAP login fails with one of these errors: This information does not correspond to any account. ldap_bind () : Unable to bind to server : Can ' t contact LDAP server Or login silently fails — you enter correct LDAP credentials but BookStack rejects them without a useful error message. The Cause BookStack's LDAP integration has several configuration points that must all be correct for authentication to work. The most common causes: User filter placeholder syntax — {user} vs ${user} confusion Docker Compose variable escaping — the $ in ${user} gets eaten by Docker's env interpolation TLS/SSL certificate validation — self-signed certs fail PHP's LDAP TLS check Wrong bind DN or base DN — the service account can't search or the search starts in the wrong place SELinux blocking — on RHEL/Rocky, SELinux silently blocks outbound LDAP connections The Fix Method 1: Fix the User Filter (Most Common) The LDAP_USER_FILTER variable must contain the correct placeholder syntax. I