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Knowledge Base

Smarts NCM: Large log files (10 MB or more) are being generated in Smarts NCM $VOYENCE_HOME/cm/ directory for a device server that is not configured to manage any devices (372821)

Last Updated: 9/22/2023Categories: TroubleshootingTotal Views: 2900Language:
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Symptoms

How to clean up or stop the logs getting generated in the $VOYENCE_HOME/cm/ for a device server with no devices?

Large log files (10 MB or more) are being generated in the $VOYENCE_HOME/cm/ directory for a device server that is not configured to manage any devices.

Large Smarts NCM audit logs for a device server with no devices are impacting system memory and disk space.

Cause

Syslog messages coming from the devices themselves are being logged to Smarts NCM syslog. This can be confirmed in the Smarts NCM syslog configuration file (/etc/syslog.conf), where there will be an entry in the like the following:

# Voyence Control: Send router/switch logs to Config Manager
*.debug;mail.none           $VOYENCE_HOME/cm/Syslog

This indicates that the syslog messages from the devices are configured to be logged to the NCM syslog. A device configured with the Smarts NCM syslog server would log the syslog message to the NCM syslog messages such as the following in the log files:

May  8 04:07:30 x.x.x.1 57843: 057844:
May  8 04:07:29.681: %FAN-3-FAN_FAILED: Fan 4 had a rotation error reported.
May  8 04:07:32 x.x.x.2 1731245: 1731268:
May  8 04:07:31.819: %ENVMON-4-FAN_LOW_RPM: Fan 2 service recommended
May  8 04:07:32 x.x.x.3 2907864: 2908362:
May  8 04:07:31.871: %LINK-3-UPDOWN: Interface Async65, changed state to up
May  8 04:07:32 x.x.x.4 949669: 949749:
May  8 04:07:31.923: %FAN-3-FAN_FAILED: Fans had a rotation error reported.
May  8 04:07:34 x.x.x.5 78199: 078217:
May  8 04:07:32.993: %ENVMON-4-FAN_LOW_RPM: Fan 1 service recommended

In these entries, the following information is logged:

Timestamp of the message

IP address (represented above by x.x.x.N) of the system where the message originates

Process ID

Messages that are being logged from the device on which the syslog server is configured as Smarts NCM syslog server

Note that these messages have nothing to do with whether the device server is managing any devices or not. The messages are coming from the devices. You can identify the devices in the messages, as in the following message example:

May 8 04:07:30 x.x.x.1 57843: 057844: May 8 04:07:29.681: %FAN-3-FAN_FAILED: Fan 4 had a rotation error reported

x.x.x.1 would be the IP address of the system from which an application logged this message. This would be the device that has the configuration of the syslog server that may have been set to this particular device server address.

Resolution

To disable this functionality, you need to remove the configuration of the Smarts NCM syslog server from the particular devices as follows:

Identify the particular devices from their IP addresses in the device messages.

Verify in the device configurations that the Smarts NCM syslog server configuration is present.

Remove the Smarts NCM device server configuration from the device configuration.

Detectable by VMware SkylineTM

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