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This article mainly introduces what the Linux log file refers to, which can be used for reference by friends who need it. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

Log files are a set of records stored by Linux for administrators to track and monitor important events. They contain messages about the server, including the kernel, services, and applications running on it.

Linux provides a centralized repository of log files, usually in the / var / log directory. There are a large number of files in this directory, where we can get information about each application.

Type of Linux log file

Log files generated in a Linux environment can usually be divided into four different categories:

1. Application log

2. Event log

3. Service log

4. System log

Why monitor Linux log files?

Log management is part of the responsibility of any server administrator.

By monitoring the Linux log files, we can get detailed information about server performance, security, error messages, basic problems, and so on. If we want to take an active and passive approach to server management, log file analysis is required on a regular basis.

In short, monitoring log files can predict an impending problem and resolve it before it is discovered.

Key system logs to be monitored

The following are the main Linux log files that need to be monitored:

Authorization log (auth.log): it mainly tracks the use of authorization systems that control user access, where all authentication-related events are logged.

Daemon log (daemon.log): it mainly tracks services that perform important tasks running in the background, and daemons often have no graphical output.

Debug log: mainly to provide debug output for the application.

Kernel log: mainly provides administrators with detailed information about the Linux kernel.

Syslog: mainly contains the most information about the system, and if your application does not have its own log, the entry may be in this log file.

Thank you for reading this article carefully. I hope the editor shares what the Linux log file refers to is helpful to everyone. At the same time, I also hope that you will support us, pay attention to the industry information channel, and find out if you encounter problems. Detailed solutions are waiting for you to learn!

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