Loggers are responsible for automatically logging events and status information during the operation of Xentral. The logged events and information are for example system messages, error messages, or status messages. In this article, you will get a brief overview of the loggers in Xentral.
The following sections describe the different loggers available.
Log File
This is the system log. The log file is stored as a file on the server and can be used by engineers for debugging purposes, if necessary. The Log File module (Logviewer) reads the log file and makes the information visible to the user in Xentral. The logger is always active and does not need to be activated. In the settings (Log File > Settings) you can choose which types of log levels should be displayed.
Here is a short overview of the log levels
Log level | Description |
Warning | Exceptional events that are not errors.
It works like this, but it’s not ideal - you should change that. |
Notice | Notable events that allow you to understand a user’s intent.
What the user tried to do before the application crashed. |
Info | Frequent events that describe a user’s intent in more detail.
Can be useful to reproduce the exact actions of the user. |
Error | Catchable error that does not interrupt the application. Error log messages should give the developer an indication of where to look for a problem.
This information should at least appear in the log when an error is reported. |
Emergency | An emergency error should result in the customer calling support for "emergency issue".
The last call for help before the application dies. |
Debug | Detailed debug information.
I don’t want to debug their production system, so I tell them to turn on the DEBUG level and send me the log. |
Critical | Unhandled/unknown errors and bugs that cause software to stop working. Ideally, all CRITICALs should be converted to ERRORs over time.
Something about this module is permanently broken - developer’s attention required. |
Alert | Use notification in cases where an administrator wants to be notified by email or SMS.
Hey DevOps, you need to fix this! Otherwise, some/many people will not be able to work. |
Protocol
This is a list of actions performed by the logged-in user in Xentral. It can be viewed via the Log module.
Outgoing Mail Log
The outgoing mail log is a logger for all sent mails and errors. You can get more information here.
System log
The system’s log file contains various relevant information.
System Health
The System Health logger displays the "health status" of the system. If the system detects inconsistencies at various points, such as duplicate numbers, errors when executing process starters, a full memory, etc., a warning or error message is generated in the System Health overview. More information about the module can be found here.