What is Splunk is used for?

What is Splunk is used for? : Splunk is used for big data monitoring and searching . It correlates and indexes data in a searchable container , enabling the creation of alerts, reports, and visualizations.
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Splunk indexes and searches log files kept in a system using cutting-edge, scalable, and efficient technology. To provide operational intelligence, it analyzes the data that is generated by machines. Splunk’s primary benefit is that it stores data entirely within its own indexes, negating the need for any external databases.

Splunk is a software mainly used for searching, monitoring, and examining machine-generated Big Datathrough a web-style interface. Splunk performs capturing, indexing, and correlating the real-time data in a searchable container from which it can produce graphs, reports, alerts, dashboards, and visualizations. It aimsto build machine-generated data available over an organization and is able to recognize data patterns, produce metrics, diagnose problems, and grant intelligence for business operation purposes. Splunk is a technology used for application management, security, and compliance, as well as business and web analytics.

The Splunk software makes it simple to search for a specific piece of information among a large collection of intricate data. Knowing which configuration is currently in use can be difficult when looking through log files, as you may be aware. This is made simpler by a tool in the Splunk software that enables the user to identify configuration file issues and view the currently active configurations.

As we have discussed ‘What is Splunk?’, now we have a question ‘Why Splunk?’ Splunk is a digitized platform that assists in accessing machine-generated data, which will be useful and worthwhile for everyone. Handling a huge amount of data is one of the biggestchallenges, as there is a rapid development in the IT sector and its machines. In this situation, Splunk plays a vital role to deal with the situation.

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Let’s use Splunk as an example to discuss it. Assume you are a system administrator and you need to determine what is wrong with the machine or system you are using. Look at the data produced by the computer to get a sense of how it appears.

It would take hours to find out whats wrong with your system

Consequently, Splunk enters the picture. It will complete all the demanding tasks for you, i. e. Locating the issues will be much easier after processing all of the data that was produced by your machine or system and after obtaining the pertinent data.

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Splunk’s history will be covered in our next section now that you are familiar with it.

A Brief History of Splunk

This technology was created in 2003 by Rob Das and Eric Swan as a response to all the issues identified while researching the information caves that the majority of businesses experience. Exploring the information caves is referred to as spelunking, which is where the name Splunk comes from. It was created as a search engine for log files kept in a system’s infrastructure.

Splunk’s initial release, which took place in 2004, was well received by its end users. The majority of the businesses started to purchase its enterprise licenses as it slowly and gradually became popular. The founders’ primary objective is to market this emerging technology in large quantities so that it can be used in nearly all scenarios.

Now, you have an idea about ‘What is Splunk?’ and its history. Coming up next is Splunk features.

Splunk Features

Here are some of the functions that Splunk is used for:

After getting a fair understanding of Splunk features, we will now proceed with the advantages and disadvantages of Splunk.

Advantages and Disadvantages of Using Splunk

According to an IT Central Station user, some remarkable qualities about Splunk are ‘its performance, scalability, and most importantly the innovative style of collecting and presenting the data.’ On the other hand, the same user writes that Splunk can be complexwhen it comes to setting up and adding new sources.

Here are some advantages of using Splunk:

  • Splunk creates analytical reports with interactive charts, graphs, and tables, and shares them with others which is productive forusers.
  • Splunk is scalable and easy to implement.
  • Splunk can automatically find useful information enclosed in your data, so you don’t have to identify it yourself.
  • It helps in saving your searches and tags which are recognized as important information so that it can make your system smarter.

Also, have a look at some of its disadvantages:

  • It can be expensive for very large data volumes.
  • Optimizing searches for speed is more of a philosophy than science, which means it cannot be practically implemented.
  • Dashboards are useful but not as reliable asTableau.
  • The IT sector is continuously attempting to replace Splunk with new open-source options, which is a challenge faced by Splunk.

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Now let’s look at how Splunk’s solid architecture extracts the desired output from complex data.

Let’s start off by looking at this simple pictorial representation of Splunk’s architecture:

Now let’s talk about the terms that are related to the Splunk architecture:

  • Universal Forwarder (UF): It is alightweight element that assists in pushing the data to the heavy Splunk forwarder. The principal task of this element is to just forward the log data from the server. You can easily install Universal Forward on the client-side or on the application side.
  • Load Balancer (LB): In computing terms, Load balancing enhances the distribution of workloads over multiple computing resources. A load balancer is an element that distributes the network or theapplication traffic over a cluster of servers.
  • Heavy Forwarder (HF): It is recognized to be a heavy element. This Splunk component enables you to filter the data. For instance, it will help in accumulating only the error logs.
  • Indexer: The chief task of an indexer is to store and index thefiltered data. It helps in improving Splunk’s performance. By default, Splunk automatically implements the indexing like hosts, sources, date, and time.
  • Search Head (SH): It is simply a Splunk instance that helps in distributing the searches to the other indexers, and it normally doesn’t have any instance of its own. It is essentially used to achieve intelligence and perform reporting.
  • Deployment Server (DS): It helps indeploying the configuration like updating the UF (Universal Forwarder) configuration file. You can use a DS to share data between the components.
  • License Master (LM): A license slave is a Splunk Enterprise state which is controlled by a License Master. If you have a single Splunk Enterprise instance, it assists as its License Manager (once you have installed an Enterprise license on it). The license is based on quantity and usage. For example, for 50 GBper day usage, Splunk examines the licensing details daily.
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Here is how the Splunk Architecture works:

  • Forwarder: It assists in collecting the data from the primitive machines, then it forwards the data to the indexer in real-time.
  • Indexer: It helps in processing the incoming data in real-time. It also collects and arranges the data on thedisk.
  • Search Head: With the help of Search Head, end-users can interact with Splunk. It enables users to perform the search, analyze, and visualize functions.

Let’s now see how the architecture of Splunk works in detail:

  • The forwarder can track the data,make a copy of the data, and can perform load balancing on that particular data before it sends it to the indexer.
  • Cloning can help in producing duplicated copies of any case at the data source whereas load balancing is performed so that even if one case collapses, that data can be carried to another case that is hosting the indexer.
  • When the data is obtained from the forwarder, it is then dropped in an Indexer component. In the Indexer, the obtained data is then split intovarious logical datastores and at every datastore, you can set authorities which will then guide the user’s views and accesses.
  • When the data is inside the Indexer, you can explore that data and assign those explorations to different search companions and all the results that we will be getting after assigning will be merged and carried forward to the Search Head.
  • You can also perform scheduling the search companions and create the alerts, which will be then activated when somesituations will match the saved searches.
  • You can also use the knowledge objects only to intensify the existing unstructured data (data that do not have any format).
  • The search heads and knowledge objects can be retrieved from a Splunk CLI or a Splunk Web Interface. This interaction happens over a REST API connection.

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Is Splunk free?

After understanding What is Splunk? and its comprehensive advantages, you must have a doubt whether Splunk is free of cost? The answer to that question is, yes! There is a version of Splunk known as Splunk Free It is totally a free version The free licensepermits you to index up to 500 MB per day, and it never expires

The daily limit for new data you can add or index is 500 MB. You can, however, continue to add data every day and compile as much as you like. You could index 500 MB of data each day, for instance, and have 10 TB of data in Splunk Free at the end of the day. You must purchase an Enterprise license if your usage exceeds 500 MB per day. Splunk Free monitors license violations to control how your license is used. If you go over 500 MB/day more than three times in a 30-day period, Splunk Free will still index your data but will disable the search feature until you have generated three or fewer alerts in that time.

Now since you know ‘What is Splunk?’, you must be eager to know how Splunk is helpful in building your career.

How will Splunk help in your career growth?

Many technologies are gaining attention as the Big Data landscape changes on a daily basis. Some of them, though, have stood out thanks to their performances. One such quickly developing technology is Splunk. It offers appealing career opportunities due to the rising demand for it and the suitability of applicants with various educational backgrounds. Learning Splunk will therefore guarantee your success if you want to pursue a career in the field of data analytics. Splunk [NASDAQ: SPLK] took eight years to develop, and this year it is anticipated that its revenues will surpass US$100 million. The Big Data revolution is being driven by a number of current businesses and upcoming initial public offerings, with Splunk being regarded as the top choice.

For those who do not frequently browse the technological sphere, allow me to inform you that Splunks CTO and co-founder, Erik Swan, opportunistically stated in an interview that Splunks magic seasoning is that it is thought of as the Google for machine-generated data. The term “machine” in this context refers to all devices that produce massive amounts of data. Various machines in the Splunk network track, log, and categorize data traffic.

Splunk is expanding into more technological fields and business sectors, including finance and insurance, information technology, retail, trade, and many others. Numerous businesses all over the world use Splunk to meet their needs for fraud prevention, customer understanding, cybersecurity, and cost reduction. In companies like IBM, Salesforce, Facebook, HP, Adobe, and others, Splunk is being used on a global scale.

As you can see from the graph above, a Splunk Sales Engineer typically earns US$148,134 per year, which is made up of a US$115,967 base salary and a US$32,167 bonus. This total pay is $7,627 more than the US average sales engineer salary. At Splunk, sales engineers’ salaries can range from US$112,500 to US$190,000, with equity starting at US$80K and going up to US$100K. At Splunk, the Engineering Department makes an average $9,393 more than the Product Department. Comparatively, the data contains a total of two SplunkSales Engineers salary records.

Get familiar with the top Splunk Interview Questions to get a head start in your career!

Who should learn Splunk?

Splunk is one of the most suitable courses for applicants who want to see themselves asMachine Learning Engineers, System Administrators, Analytics Managers, and beginners, who wish to get trained in this awesome technology The most remarkable fact is that there is no need to have a technical background to learn this technology, which makes it viable for candidates having degrees in diverse educational fields

That brings this blog post to a close. Splunk has emerged as one of the most sought-after tools for Big Data specialists in today’s world. Any number of data sources, whether structured or unstructured, can be used in big data. Because unstructured data is the biggest challenge, Splunk aids professionals in finding the most crucial information even among it.

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What is Splunk is used for?

What kind of tool is Splunk? : Splunk is a software mainly used for searching, monitoring, and examining machine-generated Big Data through a web-style interface Splunk performs capturing, indexing, and correlating the real-time data in a searchable container from which it can produce graphs, reports, alerts, dashboards, and visualizations
What is Splunk used for in Cyber security? : Splunk allows security teams to analyze large data sets, detect malicious network activity, and respond to threats across environments quickly and more accurately than legacy SIEM systems
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Splunk is a popular platform for big data collection and analytics, often used to derive insights from huge volumes of machine data. There are two primary ways to use Splunk architecture for data analytics:

  • Splunk Enterprise can collect log data from across the enterprise and make it available for analysis
  • SplunkHunk is a new way to index and query Hadoop data, easily creating dashboards and reports directly from Hadoop datasets

In this article you will learn:

  • What is Splunk
  • Using Splunk for machine data analytics
  • Introduction to Splunk Hunk
  • Splunk Hunk key capabilities
  • Should you use Hunk or Splunk Enterprise?
  • Low-cost storage for Splunk Hunk and Splunk Enterprise with Cloudian

What is Splunk?

Splunk is a cutting-edge tool that searches and indexes log files and assists businesses in gaining insights from the information. Splunk uses indexes to store data, so it does not need a separate database to do so, which is one of its main advantages.

Splunk is used for monitoring and searching through big data. It indexes and correlates information in a container that makes it searchable, and makes it possible to generate alerts, reports and visualizations. It can recognize data patterns, create metrics and help diagnose problems, for business challenges like IT management, security and compliance.

Using Splunk for Machine Data Analytics

At the center of Splunk is an engine that collects, indexes and manages big data. It can handle terabytes of data or more in any format every day. Splunk analyzes data dynamically, creating schemas on the fly, allowing organizations to query data without having to understand the data structure first. It’s simply possible to pour datainto Splunk and immediately begin analysis.

Splunk can be deployed on a single laptop or in a massive, distributed architecture in an enterprise data center. It provides a machine data fabric, including forwarders, indexers and search heads (see our article on Splunk architecture) that enables real-time collection and indexing of machine data from any network, data center or IT environment.

Introduction to Splunk Hunk: Splunk on Hadoop

For analyzing machine data stored in Hadoop, Hunk is a substitute for Splunk Enterprise that is offered and supported by Splunk. Because Hadoop was the standard tool for storing and analyzing extremely large amounts of data in the past, many organizations saved machine data there. Organizations are currently battling its limitations as the Hadoop ecosystem ages.

Source: Splunk

Hunk is a Splunk big data solution designed to explore and visualize data in Hadoop clusters and NoSQL databases like Apache Cassandra Instead of writing code in Hadoop for every data-related question you need to ask, Hunk provides an integrated experience that does not require special skills, and can help you extract insights from big data without specialized schemas or a major developmenteffort

Hunk can help organizations make more of Hadoop datasets by:

  • Bringing the Splunk technology stack to Hadoop, letting you create dashboards and share reports using one platform that works with Hadoop on the back-end.
  • Creating a Splunk Virtual Index that helps separate Hadoop data storage from data access and analytics, to enable interactive exploration and analysis that is not traditionally possible with Hadoop.
  • Making it as easy to develop applications leveragingHadoop big data. Hunk provides a web framework that lets developers access Hunk using familiar tools like XML, JavaScript and Python/Django.
  • Providing the Splunk Search Processing Language, just like in the Splunk Enterprise product, which helps detect patterns and anomalies in big data and find data of interest in Petabyte-scale Hadoop clusters.
  • Uncovering data correlations using Splunk DB Connect, to cross reference structured data in Hadoop with data in a relational database.Hunk lets you turn these correlations immediately into visualizations and dashboards that can be shared with others.
  • Accelerates queries on massive data volumes in Hadoop and provides other capabilities like stored statistics, access control and scheduling.

Splunk Hunk Key Capabilities

Hunk can perform the following functions:

  • Exploring data in Hadoop—explore data interactively across large datasets with no need to analyze thestructure of the data or define schemas. It facilitates deeper analysis and helps users identify anomalies, detect patterns, and enrich insights by connecting to data from relational databases.
  • Reporting and visualizing Hadoop data—build graphs, charts and other visualizations based on Hadoop data to make it meaningful to others in the organization. The reports can be shared on any device.
  • Custom dashboards—combine charts, views and reports into interactive dashboardsthat can be viewed on laptops and mobile devices, with security and access control built in.

Should You Use Hunk or Splunk Enterprise?

Hunk is a no-brainer if your data is stored in Hadoop because it can be used to perform operations on the data without requiring a significant amount of data intake. The question of whether it might be preferable to switch from Hadoop to Splunk Enterprise arises, though, if you have the option of extracting data from Hadoop.

Advantages ofHunk:

  • Hunk typically takes up less disk space compared to Splunk Enterprise, reducing storage costs
  • Hunk lets you keep data in Hadoop in its original format and continue to use tools from the Hadoop ecosystem

Advantages of Splunk Enterprise:

  • In many cases, searches in Splunk Enterprise run much faster than Hunk on Hadoop
  • Supports real-time searches, which is not possible with Hadoop
  • Latency is typically much lower for long-runningsearches
  • You can use Splunk Forwarders to ingest log data from a large variety of IT systems, while it can be difficult to continuously ingest data from these sources to Hunk

Reduce Splunk Storage Costs by 70% with SmartStore and Cloudian

Data on cloud storage services like Amazon S3 can be indexed by the indexer using Splunk’s new SmartStore feature. SmartStore can connect to the exabyte-scalable, S3-compliant on-premises storage pool known as Cloudian HyperStore. By separating compute from storage in your Splunk architecture, Cloudian enables you to scale up storage resources independently of compute resources.

HyperStore also features full Apache Hadoop integration for Splunk Hunk users. Orgnizations can run Hadoop analytics on HyperStoreappliances, with no need to offload data to other systems. Under the hood, HyperStore uses S3FS as the target for HDFS, allowing you to run Map Reduce jobs on top of data stored on a Cloudian appliance.

[/lightweight-accordion]Why is Splunk so popular? : It is Scalable and has no Backend This makes Splunk available on multiple platforms and can be installed speedily on any software If one server is not enough another can be added easily and data is distributed across both these servers evenly
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Innovation takes many forms: transformative businesschanges and incremental optimizations.  Both types of innovation are predicated on having secure and resilient systems. With Splunk, customers efficiently ensure security and resilience, freeing up resources to identify opportunities in their data and deliver innovations, even in the face of unpredictability.

Improve Security

Improve Security 

As attack complexity and the attack surface continue to increase, maintaining a strong security posture becomes more and more difficult. By delivering a stronger, more unified security posture across the hybrid, multi-cloud environment, Splunk helps customers modernize their security operations. SOCs that support business growth are as a result more effective and agile.

Drive Resilience

Drive Resilience

As the percent of business conducted digitally continues to skyrocket, system resilience has become critical to business resilience With Splunk, customers have a real-time view of the health and performance of all layers of their technology stack from underlying infrastructure to end user applications enabling them to optimize performance by proactively identifying issues, and driving rapid resolution Customers reduce overheadand boost the bottom line, while managing their systems at the speed of digital business

What makes Splunk different? 

Splunk helps you turn data into doing, at scale.

Extensible data platform

Splunk provides a flexible and scalable platform thatsupports an expansiveset of use cases You can leverage Splunk-built search and reporting, security and observability solutions, the 2,400+ apps available onSplunkbase,and build custom applications tuned to your specific needs

Integrated observability and security

Market-leading, purpose-built solutions are offered by Splunk, which also offers unified security and full-fidelity observability. With the help of these specialized applications, technology teams can successfully accomplish their goals, and they can work cross-team when necessary by sharing data and utilizing common work surfaces.

End-to-end data coverage

Splunk is data source agnostic and supports multicloud, hybrid, and edge technologies across your entire IT infrastructure. Splunk provides you with end-to-end contextual visibility by accurately ingesting metrics, logs, and traces. Spend less time putting data together and more time taking action.

World-leading investigation

Splunk provides you the flexibility to ask questions of unstructured data, and add structure on the fly, with our proprietary schema-on-read technology. Streaming analytics ensures near real-time access to analytics-driven insights. Combined with full-fidelity data coverage and pervasive AI, Splunk ensures that you can accurately identify signal from noise faster, at scale.   

Rapid time-to-action

Splunk’s built-in orchestration and automation features, which have been improved by AI/ML, make it simple to turn insight into action at scale. You can streamline workflows, reduce manual heavy lifting, and effectively scale operations to react quickly.

Drive outcomes across your organization


Reduced downtime

Keep mission-critical applications and infrastructure up and running


Lower risk of data breach,IP theft and fraud

Modernize and strengthen your cyber defenses


Faster time to market for new apps

Release apps faster and improve developer efficiency

Enterprise grade services for data-driven outcomes 

Professional services, support and training

Designed to help accelerate time to value Get expert guidance, targeted response times, phone contact and access to support portals

Engaged community of passionate experts

Welcome to the best community, ever Get answers to your questions from Splunk experts or join one of our amazing user groups

Vibrant ecosystem of partners and developers

Regardless of industry or environment, a vast ecosystem aids in your ability to concentrate on generating value for your organization.

Forging the Future

How industry leaders use data to be more secure, resilient and innovative.

The State of Observability 2022

Research from around the world shows that as observability becomes crucial, leaders extend multicloud visibility and significantly enhance digital experiences.

Do More With Splunk

With Splunk, you can act immediately on anything from IT to security to DevOps and beyond.


Additional Question — What is Splunk is used for?

Is Splunk easy to learn?

Splunk training courses are readily available online. To learn, though, simply takes time and commitment, just like with any other skill. You can take a variety of courses online from the comfort of your home using a laptop.

Who is Splunk’s biggest competitor?

with more than 350,000 workers and $73. IBM is the most ferocious Splunk competitor with revenues of $6 billion. Both IBM and Splunk provide strong SIEM products with standout advantages to potential customers.

What are the advantages of Splunk?

simple information from complex data. encourages the company to adopt a data-driven strategy. real-time monitoring of operational flow integrates data management solutions for machine learning and artificial intelligence in a very straightforward manner.

Why is Splunk better than tools?

Splunk Advantages Splunk is more than just a log collection tool. It’s costly because it’s feature-rich for enterprise-level organizations. The Splunk tool ingests, parses, and indexes all kinds of machine data, including event logs, server logs, files, and network events.

How is Splunk so fast?

Why is Splunk fast? The simple answer is parallel processing via MapReduce methodologies. For this section, we are going to focus primarily on the parallel processing aspect, which is the first step to MapReduce. Splunk has the ability to take a search and break it up into smaller parts to get you the answer faster.

Why elk is better than Splunk?

Splunk offers a well-documented RESTful API with over 200 endpoints for accessing every feature in the product as well as SDKs for popular languages. ELK/Elastic Stack’s Elasticsearch was designed from the ground-up as a distributed search and analytics engine using standard RESTful APIs and JSON.

Is Splunk a logging tool?

Splunk is a centralized logs analysis tool that can handle both structured and unstructured machine-generated data, as well as complex multi-line data. It offers features like easy search and navigation, real-time visibility, historical analytics, reports, alerts, dashboards, and visualization.

What elk stands for?

Elasticsearch, Logstash, and Kibana are three well-known projects that make up the ELK stack, which is referred to by this acronym.

Is Splunk the best tool?

The best monitoring tool on the market, with in-depth analysis and reporting. Personally, I prefer Splunk to QRadar. Splunk is very flexible and offers excellent dashboards for infrastructure monitoring. It provides a comprehensive summary of the logs gathered from various devices.

Is Splunk good to learn?

Since Splunk is a widely used business tool, it is unquestionably valuable to learn. As more businesses choose to make use of big data, Splunk’s popularity will only rise. Many opportunities for big data administration, management, and architecture are made available by knowing how to use Splunk.

How do you practice Splunk?

Where can I practice splunk search commands for free?Step 1 Install Splunk Enterprise You may install Splunk Enterprise on your local workstation (desktop/laptop), vms or using docker Step 2 Convert it to the free license Step 3 Download the sample data files Step 4 Play in your Splunk Sandbox

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