On the forum, you can find many threads where log dumps are posted, which can contain a lot of useful information.[/HEADING] Imagine that your program or website is a person keeping a daily diary. In this diary (which programmers call logs), everything is recorded: "started up", "user clicked a button", "an error occurred".
When everything works well, no one looks at this diary. But as soon as something breaks, you are handed this very diary. And that's when the panic sets in: instead of a few lines, you have thousands, or even millions, of incomprehensible lines of code in front of you. Reading them manually is like looking for a needle in a haystack.
The good news is: you don't have to do this manually. There are special helper programs that collect, sort, and beautifully display these entries. We have selected 7 interesting and popular tools, explaining in simple terms what makes each of them great.
Logs will stop being a frightening set of symbols as soon as you put them in the hands of the right helper. Start small, try one of the simple options, and you will be surprised at how much easier it becomes to find the causes of any malfunctions.
When everything works well, no one looks at this diary. But as soon as something breaks, you are handed this very diary. And that's when the panic sets in: instead of a few lines, you have thousands, or even millions, of incomprehensible lines of code in front of you. Reading them manually is like looking for a needle in a haystack.
The good news is: you don't have to do this manually. There are special helper programs that collect, sort, and beautifully display these entries. We have selected 7 interesting and popular tools, explaining in simple terms what makes each of them great.
- Datadog Logs: The helper that will do everything for you [Official website]
Who it is for: Those who want to get results right now and do not want to deal with complex settings.
This is a ready-made service that works on the "plug and play" principle. You install a small agent program, and it immediately starts showing you beautiful and clear graphs with your log entries.- IMPORTANT: This is a paid service (like a movie or music subscription). It is very convenient, but you depend on the developer company, and as the number of log entries grows, the price will also grow.
- Fluent Bit: The unobtrusive and reliable courier [Official website]
Who it is for: Anyone who just needs to neatly collect log entries and move them to another location.
Fluent Bit itself does not analyze or display anything. It is a "courier". It quietly works in the background, collects text lines from different computers or programs, and delivers them to where they will be read and analyzed.- IMPORTANT: It is very lightweight, barely loads the computer, and works stably. It is often just installed once and safely forgotten about, because it never lets you down.
- EventLog Analyzer: The strict guard and accountant [Official website]
Who it is for: Those who need to know exactly who did what and when in the system.
This tool is created not so much for reading convenience, but for strict control. If an error occurred in the system, someone deleted an important file, or a security breach happened, this program will accurately show the culprit and the time of the event.- IMPORTANT: For simple daily reading, it might seem too strict and overloaded. But if order, reporting, and security are your top priorities, this is the ideal choice.
- Elastic Stack (ELK): A huge library with smart search [Official website]
Who it is for: Those who have a massive amount of entries pouring in as a continuous stream.
When there are tens of thousands of lines a day, you can't read them manually. This system collects everything in one place and allows you to search for the right message as quickly and easily as we search for something in a regular internet search engine. You can find the right phrase among millions of lines in a fraction of a second.- IMPORTANT: This is a powerful, but complex system. To make it work well, it needs to be configured carefully and for a long time, and you also need to allocate a sufficiently powerful computer or server for it.
- Graylog Open: A convenient and clear alternative [Official website]
Who it is for: Those who found the previous option (ELK) too complex, but still need good search capabilities.
This tool is often chosen when you want powerful features without the headache. Everything is simpler here: you log into the system and immediately see clear tables and lists. You don't need to spend half a day studying manuals just to see what exactly broke.- IMPORTANT: It is beginner-friendly and allows you to quickly find the causes of failures, saving your time and nerves.
- Grafana Loki: A great neighbor for those who already use Grafana [Official website]
Who it is for: Those who already look at the performance graphs of their programs through the popular Grafana software.
The logic here is very simple: why install something new and learn to work in a different window, if you can add text entries right into the same place where you already view graphs? This tool works very gently, does not overload the system, and is perfect for modern projects.- IMPORTANT: It cannot perform super-complex deep text analysis, but for quickly searching for errors by simple tags (like folder labels), it is incredibly convenient.
- Syslog-ng: An old, but faithful friend [Official website]
Who it is for: Those who need basic, reliable, and free sorting of entries without any unnecessary frills.
This is a true classic. This tool was used back when beautiful programs with graphs simply did not exist. It does not try to be trendy or modern. It just takes the entries, sorts them into folders, and saves them.- IMPORTANT: For its simplicity, reliability, and ability to work even on very old and weak computers, it is still loved and used to this day.
- Do you want it fast, beautiful, and without settings (and are ready to pay)? → Datadog.
- Do you just need to neatly collect and forward entries further? → Fluent Bit.
- Is it important to know exactly who did what (security)? → EventLog Analyzer.
- Are there a lot of entries, and are you ready to spend time learning a powerful tool? → Elastic Stack (ELK).
- Do you need powerful search, but want simplicity and a clear screen? → Graylog.
- Do you already use Grafana for graphs? → Grafana Loki.
- Do you need something maximally simple, old, and reliable? → Syslog-ng.
Logs will stop being a frightening set of symbols as soon as you put them in the hands of the right helper. Start small, try one of the simple options, and you will be surprised at how much easier it becomes to find the causes of any malfunctions.
