Splunk Stream

Installation and Configuration Manual

Deployment requirements

Before you install Splunk Stream make sure that your system meets the Splunk Stream hardware and software requirements.

Network protocols

For a list of network protocols that Splunk Stream supports, see Supported Protocols in this manual.

Hardware requirements

Before you install Splunk Stream, make sure that your underlying Splunk Enterprise deployment meets the requirements specified in Introduction to capacity planning for Splunk Enterprise in the Splunk Enterprise Capacity Planning Manual.

For baseline Splunk Enterprise hardware requirements, see Reference hardware in the Splunk Enterprise Capacity Planning Manual. Depending on the volume of network data that you plan to capture and index, additional resources might be required.

For information on Splunk Stream performance, see Performance test results and recommendations in this manual.

Supported operating systems

Splunk Stream 7.1.2 and later supports the following operating systems:


  • Linux kernel version 3.10 or later(64 bit).
  • Red Hat Enterprise Linux 7.0 or later
  • CentOS 7.0 or later
  • Ubuntu 16.04 or later

Default Linux kernel settings are not sufficient for high-volume packet capture. Using these settings can cause missing packets and data loss. To avoid this issue, add the following kernel settings to your /etc/sysctl.conf file:

# increase kernel buffer sizes for reliable packet capture
net.core.rmem_default = 33554432
net.core.rmem_max = 33554432
net.core.netdev_max_backlog = 10000

Then run the following to reload the settings:

/sbin/sysctl -p


  • Mac OSX version 10.11 or later.


  • Windows Server 2012R2 or later (64-bit)

Splunk Stream supports Local System and Administrator accounts only on Windows. For more information, see How the System account is used in Windows.

Splunk Enterprise version requirements

Splunk Stream version 7.3.0 is supported on Splunk Enterprise 8.0. Download Splunk Enterprise.

Supported browsers

Splunk Stream 6.2.x and later supports these browsers:

  • Chrome (latest)
  • Safari (latest)
  • Firefox (latest) (version 10.x is not supported)
  • Internet Explorer 9 or later. Internet Explorer version 9 is not supported in compatibility mode.

License requirements

Splunk Stream does not require a separate license. You can install and use Splunk Stream on Splunk Enterprise with a single Splunk Enterprise license.

Splunk Enterprise licenses are based on the amount of data stored by your Splunk indexers per day. For more information, see How Splunk licensing works in the Splunk Enterprise Admin Manual.

NetFlow requirements

  • NefFlow data collection requires Splunk Stream version 7.0.0 or later.
  • NetFlow Application ID field decoding requires Splunk Stream version 7.2.0 or later.
  • NetFlow event timestamp based on NetFlow record flow timestamps requires Splunk Stream version 7.2.0 or later.

To learn more about NetFlow, see Use Splunk Stream to ingest Netflow and IPFIX data.

Last modified on 03 March, 2022
Migrate Splunk Stream in a distributed deployment   Install Splunk Stream on a single instance deployment

This documentation applies to the following versions of Splunk Stream: 8.0.1, 8.0.2, 8.1.0, 8.1.1, 8.1.3

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