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Splunk is a software platform widely used for monitoring, searching, analyzing and visualizing the machine-generated data in real time. It performs capturing, indexing, and correlating the real time data in a searchable container and produces graphs, alerts, dashboards and visualizations. Splunk provides easy to access data over the whole organization for easy diagnostics and solutions to various business problems.
In this Splunk tutorial for beginners, you will learn Splunk basics like:
Splunk Monitoring tool offers plenty of benefits for an organization. Some of the benefits of using Splunk are:
Important features of Splunk are:
Splunk is available in three different versions.
Splunk Enterprise edition is used by large IT business. It helps you to gather and analyze the data from applications, websites, applications, etc.
Splunk Cloud is a hosted platform. It has the same features as the enterprise version. It can be availed from Splunk or using AWS cloud platform.
Splunk Light is a free version. It allows search, report and alter your log data. It has limited functionalities and feature compared to other versions.
Now in this Splunk fundamentals tutorial, we will learn about Splunk Architecture:
Splunk Architecture
Here, are fundamental components of Splunk architecture:
Universal forward or UF is a lightweight component which pushes the data to the heavy Splunk forwarder. You can install Universal Forward at client side or application server. The job of this component is only to forward the log data.
Load balancer is default Splunk load balancer. However, it also allows you to use your personalized load balancer.
Heavy forward is a heavy component. This Splunk component allows you to filter the data. Example: collecting only error logs.
Indexer helps you to store and index the data. It improves Splunk search performance. By default, Splunk automatically performs the indexing. For example, host, source, and date & time.
Search head is used to gain intelligence and perform reporting.
Deployment server helps to deploy the configuration. For example, update the UF configuration file. We can use a deployment server to share between the component we can use the deployment server.
The license is based on volume & usage — for example, 50 GB per day. Splunk regular checks the licensing details.
Now in this Splunk training, we will learn how Splunk works:
How Splunk Works
Forwarder collect the data from remote machines then forwards data to the Index in real-time
Indexer process the incoming data in real-time. It also stores & Indexes the data on disk.
End users interact with Splunk through Search Head. It allows users to do search, analysis & Visualization.
Problem Statement: Mac-Donald had no clear visibility into what offers work best.
They needed insight into consumer behaviors and customer response.
The entire process using three types of Data source
Now the process carried from one step to other as mention in the below-given diagram.
Input Data moves to Parsing stage,
In Parsing Stage, relevant data is converted into events:
In this stage, events are sorted and indexed for storage based on:
It is used to gain intelligence and perform reporting.
Mac- Donald used it to get the following information:
Some famous companies using Splunk are:
Sumo logic tool helps you maintain the infrastructure of your application. Searching and analyzing data logs in real-time is simple. The tool allows you to monitor and visualize historical and real-time events.
Download Link: https://www.sumologic.com/
It allows you to analyze the logs and have fast searching experience. The tool helps you to collect data from the system using Syslog compatibility.
Download link: https://www.loggly.com/
Fluentd is a free and open source data collector tool. It helps you to save the logs in FS buffer. Therefore, you can retrieve it whenever you want. It also offers services like load balancing, retries for maintaining robustness.
Download link: https://www.fluentd.org/
ELK Stack allows users to take to data from any source, in any format, and to search, analyze, and visualize that data. The tool offers centralized logging. This feature is helpful when attempting to identify problems with servers or applications.
Download link: https://www.elastic.co/elk-stack
Logfaces is another alternative of spunk which allows you to email your queries. This tool keeps log data within the premises. The tool comes with an easy to a desktop application.
Download link: http://www.moonlit-software.com/
Some disadvantages of using Splunk tool are:
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