Configuration manual
9. System Log Management
92
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Log server
System log information is outputted to the log server.
By default, logs of levels 0-5 are outputted to the log
server.
Log files
System log information is outputted to the system
memory or flash memory.
By default, log information of levels 0-5 is outputted to
the system memory, and log information of levels 0-5 is
outputted to the flash memory.
The outputted system logs are first saved in the buffer of the log module. The buffer is shared
by all information, therefore, if a large amount of information is outputted, logs may get lost.
At this time, the log module collects statistics of the lost information and output the
information. The log module then obtains the logs one by one from the buffer at the
background, and outputs the logs at different output directions according to the log types. If a
congestion (such as Console die-hard or Telnet terminal exception) occurs at an output
direction during the output process, after the daemon task of the log module detects the
congestion, it restarts a new background output task to take over the existing task. In the new
task, the direction with the congestion is closed, and the previous task automatically exits after
the congestion is automatically removed. The following figure shows the schematic diagram.
Figure 9-1 System log schematic diagram
9.2
System Log Function Configuration
Table 9-3 System log function list
