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This article will explain in detail what the Linux system log analysis tools are, and the content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

Log file is a very important system file, which records very important system events, including user login information, system startup information, system security information and so on. Some of this information is very important, so only root users can read these log files in Linux.

Graylog

Graylog was founded in Germany in 2011 and is now available as an open source tool or commercial solution. It is designed as a centralized log management system that accepts data streams from different servers or endpoints and allows you to quickly browse or analyze the information. Graylog has a good reputation among system administrators because it is easy to extend. Most Web projects start on a small scale, but they can grow exponentially. Graylog can balance the load in the back-end service network and can handle several TB of log data every day. IT administrators will find the front-end interface of Graylog easy to use and powerful. Graylog is built around the concept of dashboards, allowing you to select the metrics or data sources you think are most valuable and quickly look at trends over time. When a security or performance event occurs, the IT administrator wants to be able to trace the source as much as possible based on the symptoms. Graylog's search function makes this easy. It has built-in fault tolerance and can run multithreaded searches, so you can analyze multiple potential threats at the same time.

Nagios

Nagios was originally developed by a developer in 1999 and has grown into one of the most reliable open source tools for managing log data. The current version of Nagios can be integrated with servers running Microsoft Windows, Linux, or Unix. Its main product is the log server, which aims to simplify data collection and make it easier for system administrators to access information. The Nagios log server engine captures data in real time and provides it to a powerful search tool. Through the built-in setup wizard, you can easily integrate with new endpoints or applications. Nagios is most commonly used in organizations that need to monitor the security of their local network. It can audit a series of network-related events and help distribute alerts automatically. If certain conditions are met, Nagios can even be configured to run predefined scripts, allowing you to solve the problem before people intervene. As part of the network audit, Nagios filters log data based on the geographic location of the source. This means that you can use mapping technology to build a comprehensive dashboard to understand how Web traffic flows.

Elastic Stack (ELK Stack)

Elastic Stack, commonly known as ELK Stack, is one of the most popular open source tools (and my personal favorite) in organizations that need to filter large amounts of data and understand their logging systems. Its main product consists of three separate products: Elasticsearch, Kibana, and Logstash: as the name implies, Elasticsearch is designed to help users find matches in datasets using a variety of query languages and types. Speed is its greatest advantage. It can be expanded into a cluster of hundreds of server nodes to easily handle PB-level data. Kibana is a visualization tool that works with Elasticsearch to allow users to analyze their data and build powerful reports. When you first install the Kibana engine on a server cluster, you will see an interface that displays statistics, charts, and even animations. The last part of ELK Stack is Logstash, which acts as a pure server-side pipeline into the Elasticsearch database. You can integrate Logstash with various programming languages and API so that information from your website and mobile applications can be provided directly to the powerful Elastic Stalk search engine. A unique feature of ELK Stack is that it allows you to monitor applications built on WordPress open source sites. Compared to most out-of-the-box security audit log tools that track administrative and PHP logs, ELK Stack can filter Web server and database logs. Poor log tracking and database management is one of the most common causes of poor site performance. Failure to regularly check, optimize, and empty database logs will not only slow down the site, but may also cause it to crash completely. Therefore, ELK Stack is an excellent tool for every WordPress developer's toolkit.

LOGalyze

LOGalyze is an organization based in Hungary that builds open source tools for system administrators and security experts to help them manage server logs and convert them into useful data points. Its main products can be downloaded for individual or commercial users free of charge. LOGalyze is designed as a huge pipeline in which multiple servers, applications, and network devices can provide information using simple object access Protocol (SOAP) methods. It provides a front-end interface where administrators can log in to monitor the dataset and start analyzing the data. In LOGalyze's Web interface, you can run dynamic reports and export them to Excel files, PDF files, or other formats. These reports can be based on multidimensional statistics managed by the LOGalyze backend. It can even combine data fields across servers or applications to help you discover performance trends. LOGalyze is designed to be installed and configured in less than an hour. It has a pre-built function that allows it to collect audit data in the format required by law. For example, LOGalyze can easily run different HIPAA reports to ensure that your organization complies with health laws and maintains compliance.

Fluentd

If your organization's data sources are in many different locations and environments, your goal should be to bring them together as much as possible. Otherwise, it will be difficult for you to monitor performance and guard against security threats. Fluentd is a powerful data collection solution that is completely open source. It does not provide a complete front-end interface, but serves as a collection layer to help organize different pipes. Fluentd is used by some of the largest companies in the world, but it can also be implemented in smaller organizations. The biggest advantage of Fluentd is its compatibility with the most commonly used technical tools today. For example, you can use Fluentd to collect data from dynamic records from Web servers (such as Apache), smart device sensors, and MongoDB. What you do with the data is entirely up to you. Fluentd is based on the JSON data format and can be used with more than 500 plug-ins created by brilliant developers. This allows you to extend log data to other applications and get better analysis from it with minimal manual manipulation.

What is Linux system Linux is a free-to-use and free-spread UNIX-like operating system, is a POSIX-based multi-user, multi-task, multi-threaded and multi-CPU operating system, using Linux can run major Unix tools, applications and network protocols.

What about the Linux system log analysis tools to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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