Purge Obsolete Audit Information

If reconciliation audit volumes grow "excessively" large, any subsequent reconciliations, as well as queries to audit tables, can become "sluggish". In a deployment with limited resources, a lack of disk space can affect system performance.

You might already have restricted what is logged in your audit logs by setting up filters, as described in "Filter Audit Data". You can also use specific queries to purge reconciliation audit logs, or you can purge reconciliation audit entries older than a specific date, using timestamps.

IDM provides a sample purge script, autoPurgeRecon.js, in the bin/defaults/script/audit directory. This script purges reconciliation audit log entries only from the internal repository. It does not purge data from the corresponding JSON files or external repositories.

To purge reconciliation audit logs on a regular basis, set up a schedule. A sample schedule is provided in openidm/samples/example-configurations/schedules/schedule-autoPurgeAuditRecon.json. You can change that schedule as required, and copy the file to the conf/ directory of your project, in order for it to take effect.

The sample purge schedule file is as follows:

{
   "enabled" : false,
   "type" : "cron",
   "schedule" : "0 0 */12 * * ?",
   "persisted" : true,
   "misfirePolicy" : "doNothing",
   "invokeService" : "script",
   "invokeContext" : {
      "script" : {
         "type" : "text/javascript",
         "file" : "audit/autoPurgeAuditRecon.js",
         "input" : {
            "mappings" : [ "%" ],
            "purgeType" : "purgeByNumOfReconsToKeep",
            "numOfRecons" : 1,
            "intervalUnit" : "minutes",
            "intervalValue" : 1
         }
      }
   }
}

For information about the schedule-related properties in this file, see Schedule Synchronization.