The SDN Log Files screen provides options for logs relating to the SDN feature. To view all of the options click the icons.

View SDNstats Logs

To view the SDNstats logs please select the relevant log files and click View.

The sdnstats.log file is the main, rolling log file. The .gz files are backups of logs for a particular day.

One or more archived log files can be viewed by selecting the relevant file(s) from the list of file names and clicking the View button. The log files can be filtered by entering a word(s) or regular expression in the filter field and clicking the View button.

View SDNstats Traces

Note: This option is only available if SDNstats debug logging is enabled (System Configuration > Logging Options > SDN Log Files > Debug Options > Enable Debug Log).

To view the SDNstats logs please select the relevant log files and click View.

One or more archived log files can be viewed by selecting the relevant file(s) from the list of file names and clicking View. The log files can be filtered by entering a word(s) or regular expression in the filter field and clicking View.

The traces show probing results – this indicates if the LoadMaster can successfully communicate with the SDN controller.

Clear Logs

All SDN logs can be deleted by clicking the Clear button.

A specific range of log files can be filtered by specifying a date range using the from and to fields. Specifying a date range will simply select the relevant log files that apply in the right-hand box. Individual log files can still be selected/deselected as needed on the right.

Note: Important: If the sdnstats.log file is selected, all logs in that file will be cleared, regardless of what dates are selected in the date range fields.

Save Extended Logs

All SDN logs can be saved to a file by clicking the Save button.

Specific log files can be saved by filtering on a specific date range and/or selecting one or more individual log files in the log file list in the log file list and clicking the Save button.

Debug Options

To get to the SDN Debug Options screen, click the Debug Options button on the SDN Log Files screen.

Enable Debug Log

Enable SDNstats debug logging.

To view the SDN Statistics logs, open System Configuration > Logging Options > SDN Log Files, select the log file you wish to view and click the View button.

Note: Debug logging should only be enabled when troubleshooting because it will impact performance of the LoadMaster.

Restart SDNstats service

When troubleshooting issues with SDN, the entire SDN service can be restarted. Restarting the connection will not affect any traffic connections - it just restarts the connection between the LoadMaster and the SDN controller.

If successful the Process ID will change to a new id.

The Process ID can be found by clicking the Debug button in System Configuration > Logging Options > System LogFiles and clicking the ps button.

Note: This will restart the connection to all attached SDN controllers.

SDNstats mode

There are two modes that can be used to gather the SDN statistics.

The mode can be set by going to System Configuration > Logging Options > SDN Log Files > Debug Options and setting the SDNstats mode.

The modes are described below:

  • Mode 1: When set to mode 1, the statistics are taken from the switch port that is connected to the server and the statistics are relayed back to the LoadMaster.
  • Mode 2: When set to mode 2, the information is taken from all of the switch ports along the path.

SDNstats HTTPlib timeout

This field enables you to increase the amount of time to wait for the SDN controller to respond. This can reduce the possibility of time outs caused by latency in the environment. Valid values for this field range from 5 to 60.