Cisco Headend Digital Broadband Delivery System User Guide
4020694 Rev B
113
Introduction
The processes that run on the Digital Broadband Delivery System
(DBDS) create log files when they run. These log files contain data,
such as the values of parameters at process entry and exit points, that
help system operators and engineers troubleshoot the system.
(DBDS) create log files when they run. These log files contain data,
such as the values of parameters at process entry and exit points, that
help system operators and engineers troubleshoot the system.
In order to conserve space, the system places limitations on the
number and size of each log file that it keeps on hand. When this limit
is reached, old log files "roll over" or "roll off" and are replaced with
new log files, often before anyone has had an opportunity to examine
the old files. Log files associated with some processes, such as drm,
dsm, and qamManager, roll over at an especially quick rate, often as
rapidly as every 5 minutes. In addition, whenever a process is stopped
and then restarted (known as "bouncing" the process), existing log files
are erased.
number and size of each log file that it keeps on hand. When this limit
is reached, old log files "roll over" or "roll off" and are replaced with
new log files, often before anyone has had an opportunity to examine
the old files. Log files associated with some processes, such as drm,
dsm, and qamManager, roll over at an especially quick rate, often as
rapidly as every 5 minutes. In addition, whenever a process is stopped
and then restarted (known as "bouncing" the process), existing log files
are erased.
The preserveLog utility was developed in order to allow the system to
save log files for later examination. The preserveLog utility can save
log files for processes that run on the DNCS, log files for processes that
run on the Application Server, and the log file for the xod process that
runs on the ASI server.
save log files for later examination. The preserveLog utility can save
log files for processes that run on the DNCS, log files for processes that
run on the Application Server, and the log file for the xod process that
runs on the ASI server.
14
Chapter
14
Preserve Log Files with the
preserveLog Utility
preserveLog Utility
In This Chapter
Customize the preserveLog Utility .................................................. 117
Examine the Log Files ........................................................................ 123