Citrix Systems 6 User Manual

188

Double-check any values you enter in the wlb.conf file: Workload Balancing does not validate
values in the wlb.conf file. Consequently, if the configuration parameters you specify are not
within the required range, Workload Balancing does not generate an error log.

The  Workload  Balancing  log  provides  a  list  of  events  on  the  Workload  Balancing  virtual  appliance,  including
actions  for  the  analysis  engine,  database,  and  audit  log.  This  log  file  is  found  in  this  location:  /var/log/wlb/
LogFile.log.

You can, if desired, increase the level of detail the Workload Balancing log provides. To do so, modify the Trace
flags section of the Workload Balancing configuration file (wlb.conf), which is found in the following location: /
opt/citrix/wlb/wlb.conf. Enter a 1 to enable logging for a specific trace and a 2 to disable logging. For example,
to enable logging for the Analysis Engine trace, enter:

<AnalEngTrace>1</AnalEngTrace>

You  may  want  to  increase  logging  detail  before  reporting  an  issue  to  Citrix  Technical  Support  or  when
troubleshooting.

Analysis
Engine
Trace

AnalEngTrace

Logs details of the analysis engine calculations.

Shows details of the decisions the analysis engine is making and
potentially gain insight into the reasons Workload Balancing is
not making recommendations.

Database
Trace

DatabaseTrace

Logs details about database reads/writes.

However,  leaving  this  trace  on  will  increase  the  log  file  size
quickly.

Data
Collection
Trace

DataCollectionTrace

Logs the actions of retrieving metrics.

This lets you see the metrics Workload Balancing is retrieving
and inserting into the Workload Balancing data store. However,
leaving this trace on will increase the log file size quickly.

Data
Compaction
Trace

DataCompactionTrace

Logs details about how many milliseconds it took to compact
the metric data.

Data  Event
Trace

DataEventTrace

This  trace  provides  details  about  events  Workload  Balancing
catches from XenServer.

Data
Grooming
Trace

DataGroomingTrace

This trace provides details about the database grooming.

Data
Metrics
Trace

DataMetricsTrace

Logs details about the parsing of metric data.

Leaving this trace on will increase the log-file size quickly.

Queue
Management
Trace

QueueManagementTrace

Logs  details  about  data  collection  queue  management
processing.

(This is for internal use.)