Trace Log (tracelog)
223
Media Flow Controller Administrator’s Guide
Configuring and Using Media Flow Controller Logs and Alarms
messages.9.gz
mfdb
mfdb.txt
modprobe.d
nkncnt.log.1
nkncnt.log.2
output
root_cli_history
running-config.txt
scsi.log
sysinfo.txt
systemlog
version.log
Viewing the Tech-Support Output
To view the Media Flow Controller tech-support output:
•
Web interface—Media Flow Controller Tech Support Report can be downloaded through
the System Config > Tech-Support page.
•
CLI—Run tech-support scp://<URL>. Now you can access the tech-support output at
the specified system, move it (if needed) and view its contents. See
“Terminology” on
page 30
for the scp URL format and requirements. The file is created with the name
nkn_tech-support. We highly recommend that, if you have multiple Media Flow
Controllers, each Media Flow Controller be configured with a different path variable (use a
different directory) so that tech-support data from one Media Flow Controller does not
overwrite data from another; if different hosts are used for each Media Flow Controller,
then the same path name can be used.
Trace Log (tracelog)
Media Flow Controller includes a delivery trace facility to help diagnose the handling of a
particular HTTP request. See
tracelog
for CLI details.
copy <SCP>
filename <name>
on-the-hour {disable | enable}
rotate {filesize-MB <integer> | time-interval <integer>}
syslog replicate {disable | enable}
The tracing is done by logging trace points of internal steps (for example, namespace lookup,
cache lookup, and so forth). A request is traced if the following conditions are true:
•
The global trace flag is enabled via the CLI:
delivery protocol http trace enable
•
The HTTP request includes the X-NKN-Trace header; for example if using Wget:
wget --header “X-NKN-Trace:” <URL>
The HTTP modules detect the above conditions and set the flag “HRF_TRACE_REQUEST”
as well as other flags that direct each relevant module to log meaningful trace points. The
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