Tools; System Log; System Log Configuration - HP 501 Configuration And Administration Manual

6 Tools

System log

The system log is a comprehensive list of system messages and kernel messages, which may
indicate error conditions such as dropped frames. The HP 501 stores up to 512 system error
messages in volatile memory (RAM). You can view these events using the HP 501 management
tool, and you can configure HP 501 to relay them as syslog messages to a syslog server
residing on the network.
You can also configure the HP 501 to store up to 512 messages in nonvolatile memory (flash).
When full, the oldest log message gets overwritten by the new log message. Logged messages
often indicate severe errors in HP 501 operation, and they can prove useful in diagnosing
system crashes. All log messages are time stamped.
To configure system log settings, and view a limited number of log messages from RAM, select
Tools > System log.

System log configuration

You can use the System log configuration section of the System log page to configure
the size of the system log and specify which system events result in messages to store in the log,
based on their severity level.
You can configure the following log settings:
Persistence
If the system unexpectedly reboots, log messages can be useful to diagnose the cause.
However, log messages in volatile memory are lost when the system reboots. You can enable
persistent logging to store log messages in flash memory so that they are retained after a
reboot.
Select Enabled to save system logs to flash memory. Select Disabled to save system logs to
volatile memory only. The default is Disabled.
Important
Persistent logging can eventually deteriorate the flash memory and degrade network
performance. HP recommends that you enable persistent logging only to debug a problem.
Make sure you disable persistent logging after you finish debugging the problem.
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