Monitor and troubleshoot
Documents under this category describe tools that can help you monitor, diagnose, and troubleshoot SR Linux software. This section also includes Log Event documentation to help you interpret log messages generated by SR Linux software.
- Event Handler Guide
  This document describes the functionality and configuration for the event handler framework on the Nokia Service Router Linux (SR Linux).
- Log Events Guide
  This document provides guidance for operators to interpret log events for the Nokia Service Router Linux (SR Linux).
- OAM and Diagnostics Guide
- Troubleshooting Toolkit
  This document describes how to use and configure diagnostic tools for the Nokia Service Router Linux (SR Linux).

log

bufferRollover

Table 1. bufferRollover properties
Property name	Value
Application name	log
Event name	bufferRollover
Default severity	informational
Message format string	Buffer buffer_name has been rolled over
Cause	The buffer has reached its configured max size, and log manager has rolled it over.
Effect	A new buffer has been opened for writing, and the old buffer has been archived. This may result in older buffers being removed from the system.
Raising event	N/A
Clearing event	N/A

configUpdate

Table 2. configUpdate properties
Property name	Value
Application name	log
Event name	configUpdate
Default severity	informational
Message format string	Logging configuration updated
Cause	A configuration change has been made, resulting in rsyslogd configuration being regenerated.
Effect	Rsyslogd configuration has been modified, and the process has been restarted.
Raising event	N/A
Clearing event	N/A

fileRollover

Table 3. fileRollover properties
Property name	Value
Application name	log
Event name	fileRollover
Default severity	informational
Message format string	File file_path/file_name has been rolled over
Cause	The file has reached its configured max size, and log manager has rolled it over.
Effect	A new log file has been opened for writing, and the old log file has been archived. This may result in older logs being removed from the system.
Raising event	N/A
Clearing event	N/A

networkNamespaceChanged

Table 4. networkNamespaceChanged properties
Property name	Value
Application name	log
Event name	networkNamespaceChanged
Default severity	informational
Message format string	Logging network namespace has changed from old_net_namespace to new_net_namespace
Cause	Configuration has been modified, resulting in the rsyslogd using the new network namespace to reach remote syslog servers.
Effect	Rsyslogd will use the new network namespace for reachability to remote syslog servers.
Raising event	N/A
Clearing event	N/A

subsystemFacilityChanged

Table 5. subsystemFacilityChanged properties
Property name	Value
Application name	log
Event name	subsystemFacilityChanged
Default severity	informational
Message format string	Logging output facility has changed from old_facility to new_facility
Cause	Configuration has been modified, resulting in the output facility of our subsystems changing.
Effect	Subsystems will now output logs to the newly configured facility.
Raising event	N/A
Clearing event	N/A

July 16, 2026