Splunk Registry monitoring can generate hundreds of megabytes of data per day. Windows Registries generate a great number of events due to their near-constant use. You can postpone taking a baseline snapshot until you have narrowed the scope of the Registry entries to those you specifically want the Splunk platform to monitor.Įnable Registry event monitoring using configuration files The snapshot process can be CPU-intensive, and might take several minutes to complete. The snapshot lets you compare what the Registry looks like at a certain point in time and provides for easier tracking of the changes to the Registry over time. You can capture a baseline snapshot of the current state of your Windows Registry when you first start the Splunk platform, and again every time a specified amount of time has passed. To achieve the best performance, filter the amount of Registry data that the platform indexes by configuring the nf configuration file. The user hive contains user-specific configurations required by Windows and programs, and the machine hive contains configuration information specific to the machine, such as the location of services, drivers, object classes, and security descriptors.īecause the Registry plays a central role in the operation of a Windows machine, enabling both Registry paths can result in a lot of data for the Splunk platform to monitor. When you enable Registry monitoring, you specify which Registry hives to monitor: the user hive, represented as HKEY_USERS in RegEdit, or the machine hive, represented as HKEY_LOCAL_MACHINE. The Splunk platform instance must run as the Local System user, or as a domain user with read access to the Registry hives or keys that you want to monitor. ![]() Splunk Enterprise or the universal forwarder must run on Windows.You might need additional permissions based on the Registry keys that you want to monitor. The following table lists the explicit permissions you need to monitor the Registry. The Splunk platform can alert you to problems interacting with the Registry so that you can restore it from a backup and keep your system running. If programs and processes can't write to or read from the Registry, a system failure can occur. The Splunk platform tells you when changes to the Registry are made and also if those changes were successful. The ability to capture those edits, and any other changes, in real time is the first step in understanding the importance of the Registry. When something is not functioning, Microsoft often instructs administrators and users alike to make changes to the Registry directly using the RegEdit tool. Many programs and processes read from and write to it at all times. If you use Splunk Cloud Platform, you must install the universal forwarder on a Windows machine to collect data from the Windows Registry and forward it to your Splunk Cloud Platform deployment. When a Registry entry changes, the Splunk platform captures the name of the process that made the change, as well as the entire path to the entry being changed. You can learn when Windows programs and processes add, update, and delete Registry entries on your system. ![]() ![]() When the program runs again, it looks into the Registry to read those configurations. When a program makes a change to a configuration, it writes those changes to the Registry. ![]() The Splunk platform supports the capture of Windows Registry settings and lets you monitor changes to the Registry in real time. Without a healthy Registry, Windows does not run. Nearly all Windows processes and third-party programs interact with it. The Windows Registry is the central configuration database on a Windows machine.
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