.. _PSMDB-4.0.21-15:

================================================================================
*Percona Server for MongoDB* 4.0.21-15
================================================================================

:Date: November 23, 2020
:Installation: `Installing Percona Server for MongoDB <https://www.percona.com/doc/percona-server-for-mongodb/4.0/install/index.html>`_

Percona Server for MongoDB 4.0.21-15 is an enhanced, open source, and highly-scalable database that is a
fully-compatible, drop-in replacement for `MongoDB 4.0.21 Community Edition <https://docs.mongodb.com/manual/release-notes/4.0/#nov-10-2020>`_.
It supports MongoDB 4.0.21 protocols and drivers.

Improvements
================================================================================

* :jirabug:`PSMDB-711`: Improve audit log performance



Bugs Fixed
================================================================================

* :jirabug:`PSMDB-712`: User can't be authorized via LDAP due to 'LDAP search failed with error: Referral'
* :jirabug:`PSMDB-755`: Add ldapDebug, ldapFollowReferrals and ldapConnectionPoolSizePerHost server parameters
* :jirabug:`PSMDB-715`: createBackup using AWS remote location fails with "EntityTooLarge"
* :jirabug:`PSMDB-677`: mongosh cannot authenticate LDAP user
* :jirabug:`PSMDB-544`: Binaries perconadecrypt and mongobridge do not have a version