Prerequisities
All the steps before this step in Linux high availability setup - SSO must have been done.
When SSO uses OpenLDAP Ubilogin Directory as the session store, SSO cleans expired session objects at regular intervals. To prevent two or more SSO nodes from performing the cleanup at the same time, a locking mechamism is in use to allow only one node at a time to perform the cleanup.
With ADLDS Ubilogin Directory as the session store, sessions are stored as dynamic objects and are cleaned automatically. Therefore, with dynamic session objects, SSO doesn’t perform any cleanup of expired sessions at regular intervals.
There are configuration parameters to tune this cleanup process which can be set as ubiloginConfString values for the ubiloginService with com.ubisecure.ubilogin.session.manager.ldap.SessionManagerFactoryLDAP as the ubiloginClassName.
cleanupIntervalThe interval (in seconds) in which an SSO node performs session cleanup.
Default:
60
cleanupLockEnabledIf set to
true, SSO checks that it is able to obtain a lock before performing session cleanup.If set to
false, SSO doesn’t check for a lock before performing session cleanup.Default:
true
cleanupLockCheckWaitThe time (in seconds) how long an SSO node waits before starting session cleanup to check if it was able to obtain lock successfully. This is to control the race condition of two or more nodes from trying to obtain the lock at same time.
Default:
10
cleanupLockTimeoutThe time (in seconds) after which a lock can be forcefully released and given to another SSO node. That’s to mitigate the possibility that a lock is left active in case of an unexpected software error by allowing active SSO nodes to obtain a lock even if one already exists, provided that the age of the existing lock is older than the value specified for this parameter.
Default:
600
For example:
dn: cn=SessionManagerFactoryLDAP,cn=Services,ou=System,@suffix@ changetype:add objectClass: ubiloginService cn: SessionManagerFactoryLDAP ubiloginClassName: com.ubisecure.ubilogin.session.manager.ldap.SessionManagerFactoryLDAP ubiloginConfString: cleanupInterval 240 ubiloginConfString: cleanupLockCheckWait 15 ubiloginConfString: cleanupLockTimeout 300 dn: cn=ServerSession,ou=System,@suffix@ changetype: modify replace: ubiloginServiceDN ubiloginServiceDN: cn=SessionManagerFactoryLDAP,cn=Services,ou=System,@suffix@ -
Note that @suffix@ must be expanded to the value of attribute suffix in unix.config.
The change can be done using for example Apache Directory Studio, or you can create an ldif file to change the file, and load the data using import script:
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