H3C Technologies H3C SR8800 - Manual (Page 201)

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CAUTION:
As the default system configurations for different channels are different, you need to disable the output of
log, trap, and debugging information of all modules on the specified channel (loghost in this example)
first and then configure the output rule as needed so that unnecessary information will not be output.
# Configure the information output rule: allow log information of all modules with severity equal to
or higher than informational to be output to the log host.
[Sysname] info-center source default channel loghost log level informational state
on
2. Configure the log host
a. Log in to the log host as a root user.
b. Create a subdirectory named Device under directory /var/log/, and create file info.log under
the Device directory to save logs of Device.
# mkdir /var/log/Device
# touch /var/log/Device/info.log
c. Edit file /etc/syslog.conf and add the following contents.
# Device configuration messages
local5.info /var/log/Device/info.log
In the above configuration, local5 is the name of the logging facility used by the log host to
receive logs. info is the information level. The Linux system will record the log information with
severity level equal to or higher than informational to file /var/log/Device/info.log.
NOTE:
Be aware of the following issues while editing the /etc/syslog.conf file:
• Comments must be on a separate line and must begin with the # sign.
• No redundant spaces are allowed in the file name.
• The router name and the accepted severity of the log information specified by the /etc/syslog.conf file
must be identical to those configured on the router using the info-center loghost or info-center source
command; otherwise the log information may not be output properly to the log host.
• The logging facility name and the information level specified in the /etc/syslog.conf file must be
identical to those configured on the device using the info-center loghost and info-center source
commands; otherwise the log information may not be output properly to the log host.
d. After log file info.log is created and file /etc/syslog.conf is modified, you need to issue the
following commands to display the process ID of syslogd, kill the syslogd process, and restart
syslogd using the -r option to make the modified configuration take effect.
# ps -ae | grep syslogd
147
# kill -9 147
# syslogd -r &
NOTE:
Make sure that the syslogd process is started with the -r option on a Linux log host.
After the above configurations, the system will be able to keep log information in the related file.