Splunk Enterprise and anti-virus products
Splunk Enterprise utilizes I/O bandwidth to perform indexing tasks. In particular, the write operations are very intensive. These I/O writes can clash with any product that installs a driver to intermediate between Splunk Enterprise and the operating system, such as an anti-virus software that scans when an application performs storage access.
When you run Splunk Enterprise or the forwarder on a host that has an anti-virus product installed, Splunk strongly recommends that you exclude all Splunk software processes as well as the Splunk installation directory from any kind of on-access scanning.
On Windows hosts, on-access scanners can significantly decrease performance. On *nix hosts, these scanners can use up file descriptors and render a host completely inaccessible.
Files and processes to exclude
The following table lists the Splunk platform directories and executables to exclude from anti-virus scanning.
|Version:||Directories to exclude:||Processes to exclude:|
|Splunk Enterprise (Windows)||
|Splunk universal forwarder (Windows)||
|Splunk Enterprise (*nix)||
|Splunk universal forwarder (*nix)||
||Same as Splunk Enterprise (*nix)|
Other items to exclude
If you run a Splunk app or add-on on your Splunk Enterprise instance or forwarder, exclude any executables that might come with the app or add-on. An example is the Splunk Add-on for PowerShell - this modular input comes with an executable named
powershell.exe that should also be excluded from anti-virus scans when it runs.
In general, any file associated with Splunk Enterprise that can be executed should be excluded from scanning. You might need to inspect additional files in apps or add-ons to determine whether or not they qualify.
Workaround for network accessibility issues on Splunk Windows systems under certain conditions
This documentation applies to the following versions of Splunk® Enterprise: 8.0.0, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5, 8.0.6, 8.0.7, 8.0.8, 8.0.9, 8.0.10, 8.1.0, 8.1.1, 8.1.2, 8.1.3, 8.1.4, 8.1.5, 8.1.6, 8.1.7, 8.1.8, 8.1.9, 8.1.10, 8.2.0, 8.2.1, 8.2.2, 8.2.3, 8.2.4, 8.2.5, 8.2.6, 9.0.0