Book Image

Splunk 9.x Enterprise Certified Admin Guide

By : Srikanth Yarlagadda
Book Image

Splunk 9.x Enterprise Certified Admin Guide

By: Srikanth Yarlagadda

Overview of this book

The IT sector's appetite for Splunk and skilled Splunk developers continues to surge, offering more opportunities for developers with each passing decade. If you want to enhance your career as a Splunk Enterprise administrator, then Splunk 9.x Enterprise Certified Admin Guide will not only aid you in excelling on your exam but also pave the way for a successful career. You’ll begin with an overview of Splunk Enterprise, including installation, license management, user management, and forwarder management. Additionally, you’ll delve into indexes management, including the creation and management of indexes used to store data in Splunk. You’ll also uncover config files, which are used to configure various settings and components in Splunk. As you advance, you’ll explore data administration, including data inputs, which are used to collect data from various sources, such as log files, network protocols (TCP/UDP), APIs, and agentless inputs (HEC). You’ll also discover search-time and index-time field extraction, used to create reports and visualizations, and help make the data in Splunk more searchable and accessible. The self-assessment questions and answers at the end of each chapter will help you gauge your understanding. By the end of this book, you’ll be well versed in all the topics required to pass the Splunk Enterprise Admin exam and use Splunk features effectively.
Table of Contents (17 chapters)
1
Part 1: Splunk System Administration
9
Part 2:Splunk Data Administration
14
Chapter 12: Self-Assessment Mock Exam

Handling network data input

The network data input type is available for sources that can only send data over TCP/UDP. Sources such as IoT devices, network switches, routers, and sensors rely on TCP/UDP layer-4 protocols, the indexing of data from which is supported by Splunk Enterprise. Here are some important details about this input type:

  • The UF and HF both support network input.
  • In Splunk Enterprise, the indexer instance is usually preceded or “fronted” by the UF or HF to handle the task of forwarding data for indexing. The connection from UF/HF to Splunk Enterprise must use a valid Socket Secure Layer (SSL) certificate.
  • Transmission Control Protocol (TCP) is more reliable than SSL User Data Protocol (UDP), as the latter doesn’t guarantee the delivery of network packets.
  • UDP messages in Splunk are not indexed as individual events until a timestamp is found in the data stream. This can be fixed during the parsing phase by configuring sourcetype...