What Logs Should You Monitor on Your Server?

Logs are an integral part of any server. They contain valuable information about the server’s operation and help identify problems before they become critical. In this article, we’ll look at which logs you should definitely monitor on your server to ensure its stable and secure operation.

/var/log/auth.log is one of the most important logs on the server. It records all user authentication attempts. Monitoring this log allows you to quickly detect attempts to hack the server and take protective measures.

/var/log/syslog is another important log that contains information about the system as a whole. Here you can find messages about running services, errors in the operation of programs, and other events that may affect the operation of the server.

/var/log/nginx/error.log is the error log for the Nginx web server. Monitoring this log allows you to quickly detect problems with the server’s configuration and operation.

/var/log/mysql/error.log is the error log for the MySQL DBMS. It contains information about database problems that can lead to server downtime or data loss. Monitoring this log is essential for responding quickly to database problems.

/var/log/apache2/error.log is the error log for the Apache web server. It contains information about problems with the server’s operation, configuration, and the operation of web applications. Monitoring this log helps to identify and fix server problems.

It is important to remember that monitoring logs is not only a process of collecting information, but also analyzing and taking measures to eliminate problems. Therefore, monitor server logs regularly and respond promptly to identified problems.

We hope this article helps you better understand which logs you need to monitor on your server and why it’s important for its stable operation.