Homebreadcumb forward arrow iconBlogbreadcumb forward arrow iconFull Stack Developmentbreadcumb forward arrow iconELK Stack Tutorial For Beginners: Everything You Wanted to Know

ELK Stack Tutorial For Beginners: Everything You Wanted to Know

Last updated:
24th Mar, 2020
Read Time
7 Mins
share image icon
In this article
Chevron in toc
View All
ELK Stack Tutorial For Beginners: Everything You Wanted to Know


The world, today, is data-driven which means whether it is a small start-up or a large corporate, a huge amount of data is produced. Business data, sales data, customer data, and product data, much of these data is stored in databases and web servers. Inside web servers, you can find the data in web server logs. These logs have raw data that is not structured and may be difficult to understand.

As these logs are usually neglected by large companies, they may lose track of valuable information that can help them enhance their business. Thus, it is important to handle all this log data. But log analysis can be troublesome without a proper tool.

Check out our free courses to get an edge over the competition.

Explore our Popular Software Engineering Courses

This is where ELK Stack comes in.

Ads of upGrad blog

Learn about: Splunk Vs Elk: Which One Should You Choose?

What is ELK Stack?

ELK Stack is a powerful log analysis tool that is a combination of three tools – Elasticsearch, Logstash, and Kibana. They are three open-source projects, but together they offer an end-to-end analysis solution for log searching, visualizing and analyzing. These logs may be generated from different systems. 

Check out upGrad’s Advanced Certification in Blockchain

This software stack helps you to take data from any source and format. You can then perform searching, analyzing and visualizing this data for determining patterns, in real-time. With the help of centralized logging, you can identify problems of the webserver and applications. This means you can look for all the logs from a single platform. Issues in multiple servers can also be detected.

Explore Our Software Development Free Courses

ELK Stack Tutorial: Architecture

Let us take a closer look at the ELK Stack architecture. The components are as follows:

Check out upGrad’s Full Stack Development Bootcamp (JS/MERN)


This is the heart of the software stack and is basically a NoSQL database. It was launched in 2010 and is based on the Apache Lucene search engine. Coded in Java, this tool is open-sourced. This powerful analytics engine allows you to store, analyze and search huge chunks of log data. The best way to obtain data from searching in Elasticsearch is by utilizing its REST API.

Some of its important features are:

  • Stores data centrally for looking for it quickly
  • Offers advanced queries for better data analysis
  • You can use it to index heterogeneous data
  • Offers Near Real-Time search, which means that you can find the documents right after they are indexed. So, you can update and add more data to the documents in real-time.
  • Offers Geolocation support and Multilanguage support
  • Use Multi-document APIs for handling individual records

In-Demand Software Development Skills

Some of the important components of Elasticsearch are:

  • Index – They are logical partitions of documents that have similar characteristics   
  • Node –This is an Elasticsearch instance
  • Shard – Indices can be split into horizontal shards or pieces 
  • Document – JSON objects that are storage units and are stored in an Elasticsearch index
  • Cluster – A collection of nodes

Read: 4 Types of Data Analytics to Improve Business Decision


This is a tool that fetches data inputs and provides them to the Elastic search. Initially, it was used for collecting and streaming large quantities of data from different data sources. Later on, it was included in the ELK Stack, and then it processed log messages, enhancing them and sending them to the destination.

Logstash makes the collected data available for using it further. It also helps to clean the data for further use and can support a huge array of data types. There is a huge ecosystem of plugins for Logstash, you can enhance its features. Some of the popular plugins include Github, file, exec, heartbeat, http, and iMac.

It has 3 major components:


This is used for passing the logs for processing so that it can be understood by the machine. There are more than 50 input plugins for collecting and processing data from databases and applications. 


This consists of the input data for the message field. This is considered the decision-maker for the log that is already been processed.


These are conditions that are used for executing an action or event. Events are handled using internal queues.


This is the tool used for data visualization in the ELK Stack. You can use this to search for Elasticsearch indices and is a simple interface that is browser-based. Using this, you can explore large volumes of data. It has an extensive dashboard that has many features such as graphs, geospatial data, and diagrams. Kibana can be used for searching, interacting and viewing Elasticseach data that is contained in the indices. Learn more about data visualization.

Important features of Kibana are as follows:

  • Runs on Windows, Mac, and Linux
  • Offers real-time visualization of indexed data
  • This runs on Node.js and you get the necessary packages along with the installation package
  • It can depict historical information using charts and graphs
  • You can develop and save your own graphs

upGrad’s Exclusive Software Development Webinar for you –

SAAS Business – What is So Different?



Another component of the ELK architecture is Beats. They are a set of log shippers that are installed on servers for fetching metrics and data logs. It is coded in the Go programming language and is a lightweight tool. Some of the different types of Beats are:

  • Filebeat: It collects log files
  • Packetbeat: It collects network data
  • Metricbeat: It collects service and system metrics
  • Winlogbeat: It is used to collect Windows Event log files

Read our Popular Articles related to Software Development

ELK Stack Tutorial: Installation

Ads of upGrad blog

Now, we have reached the last section of the ELK Stack tutorial. Let us see the steps required for installing the ELK Stack.

  • Visit the official website of ELK Stack –
  • Click to download Elasticsearch
  • Then, click to download Logstash
  • After that download Kibana
  • You will get three zip folders. Unzip them and follow the instructions on the official website to download them individually.


The ELK Stack is used by famous corporations all over the world such as Netflix, Medium and LinkedIn for handling their log data. This is because the tool works great while collecting data from different applications and converge it into a single instance. It is also very useful in vertical and horizontal scaling. Moreover, it supports multiple languages such as Python, Java, Perl and Ruby.

So, if you are a business owner struggling to handle your log data, ELK is the solution. For understanding the basics, keep this ELK Stack tutorial handy.

If you’re interested to learn more about big data, check out upGrad & IIIT-B’s PG Diploma in Full-stack Software Development which is designed for working professionals and offers 500+ hours of rigorous training, 9+ projects and assignments, IIIT-B Alumni status, practical hands-on capstone projects & job assistance with top firms.


Arjun Mathur

Blog Author
Arjun is Program marketing manager at UpGrad for the Software development program. Prior to UpGrad, he was a part of the French ride-sharing unicorn "BlaBlaCar" in India. He is a B.Tech in Computers Science from IIT Delhi and loves writing about technology.

Frequently Asked Questions (FAQs)

1What are some famous frameworks used in app development?

An app development framework is a code library that makes it easier for developers to create apps faster. There are other app development frameworks available, but React Native, Ionic, and Flutter are among the most popular. React Native is a framework created by Facebook that allows developers to use React, a famous JavaScript toolkit, to construct mobile apps. Ionic is a framework based on the popular JavaScript framework AngularJS. Developers can use HTML, CSS, and JavaScript to construct mobile apps. Flutter is a new Google framework that lets developers to construct mobile apps using Dart, Google's programming language.

2What are alternatives to an array that is more efficient?

There are a few more efficient alternatives to arrays. Using a linked list is one option. You can add and remove items from a linked list without having to re-sort the whole thing. Another option is to use a hash table. You can add and remove elements from a hash table without having to reorganize the entire table If you choose, you can also utilize a binary search tree. A binary search tree can have items added and removed without having to re-sort the entire tree. A heap can be used in the same way. When using a heap, you can add and remove objects without having to re-sort the entire heap.

3How good is the scope in android development?

The process of creating new applications for the Android operating system is known as Android development. To develop Android applications, you must first understand the Android SDK (software development kit) and then use what you've learned. Android development has a lot of potential. It enables developers to construct mobile applications that operate on a range of operating systems. It also includes a number of development-related tools and libraries. Similarly, the Android developer community is huge and active, offering assistance and tools.

Explore Free Courses

Suggested Blogs

Java Free Online Course with Certification [2023]
The PYPL Popularity of Programming Language Index maintains that Java is the second most popular programming language in the world, after Python.  Alt
Read More

by Rohan Vats

20 Sep 2023

Salesforce Developer Salary in India in 2023 [For Freshers & Experienced]
Wondering what is the range of salesforce salary in India? Businesses thrive because of customers. It does not matter whether the operations are B2B
Read More

by Rohan Vats

20 Sep 2023

Literals In Java: Types of Literals in Java [With Examples]
Summary: In this article, you will learn about Literals in Java. Literals in Java Integral Literals Floating-Point Literals Char Literals String Lit
Read More

by Rohan Vats

17 Sep 2023

Web Developer Salary in India in 2023 [For Freshers & Experienced]
Wondering what is the range of Web Developer Salary in India? World Wide Web is fascinating. Even though it has been around for decades, the idea tha
Read More

by Rohan Vats

17 Sep 2023

Top 20 Project Ideas in C++ For Beginners [2023]
Summary: In this article, you will learn the top project ideas in C++. Take a glimpse below Security Systems Car Rental System Dating Applications E
Read More

by Rohan Vats

14 Sep 2023

Top 20 Trending Android Project Ideas & Topics For Beginners [2023]
Summary: In this article, you will learn the top 20 trending android project ideas & topics. Take a glimpse below. Android-based Function Gener
Read More

by Rohan Vats

13 Sep 2023

14 Exciting PHP Project Ideas & Topics For Beginners [2023]
Summary: In this article, you will learn about 14 exciting PHP project ideas. Build a Clothes Recommendation System Customer Relationship Management
Read More

by Rohan Vats

13 Sep 2023

16 Exciting Javascript Project Ideas & Topics For Beginners [2023]
JavaScript bridges the gap between the material and virtual worlds in the ever-converging worlds of technology and reality. JavaScript has become a vi
Read More

by Rohan Vats

12 Sep 2023

9 Exciting DBMS Project Ideas & Topics For Beginners [2023]
Do you want to work on database projects but don’t know where to start? Then you’ve come to the right place. In today’s article, we’ll discuss some of
Read More

by Rohan Vats

12 Sep 2023

Schedule 1:1 free counsellingTalk to Career Expert
footer sticky close icon