Types of Logs

In IT, logs are chronological records of events, activities, or messages generated by software applications, operating systems, servers, and network devices.

Main types of logs in IT

• System Logs (or OS Logs/Syslogs)
• Application Logs
• Security Logs
• Audit Logs (or Audit Trails)
• Network Logs
• Error Logs
• Performance Logs (or Availability Logs)

Common Log Attributes:
Regardless of the type, most log entries typically contain:

• Timestamp: The exact date and time the event occurred.
• Event Type/Log Level: Indicates the severity or category of the event (e.g., DEBUG, INFO, WARN, ERROR, FATAL/CRITICAL).
• Source: The system, application, or user that generated the event.
• Description/Message: A detailed explanation of the event.
• Other relevant data: Depending on the log type, this could include IP addresses, usernames, process IDs, HTTP status codes, bytes transferred, etc.