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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Failed to Output Log Information

Failed to Output Log Information

Fault Description

Log information cannot be displayed in the log buffer, log file, console, user terminal, or log host.

Common Causes

  • The log severity is too low, so log information cannot be output to the corresponding channel.

  • The log display or console display function is disabled, so log information cannot be output to the console or user terminal.

Troubleshooting Procedure

  • The log severity is too low, so log information cannot be output to the corresponding channel.

    1. Run the display info-center channel command to check the channel configuration of the device information center and find the minimum severity of logs that can be output by the corresponding channel.

      <HUAWEI> display info-center channel 4 
      channel number:4, channel name:logbuffer 
      ModuID   Name          Enable LogLevel      Enable TrapLevel     Enable DebugLevel 
      ffffffff default       Y      warning       N      debugging     N      debugging 
      Table 17-2 Description of some fields in the display info-center channel command output

      Item

      Description

      channel number

      Channel number in the range of 0 to 9.

      channel name

      Channel name.

      ModuID

      Module ID. The default value is ffffffff.

      Name

      Module name. The default value is default.

      Enable

      Whether logs are allowed to pass through a specified channel:
      • Y: Logs are allowed to pass through a specified channel.

      • N: Logs are not allowed to pass through a specified channel.

      LogLevel

      Minimum severity of output logs. The following log severities are listed in descending order of importance:
      • emergencies

      • alert

      • critical

      • error

      • warning

      • notification

      • informational

      • debugging

    2. If the current log severity is lower than the minimum log severity allowed by the channel, run the info-center log-severity command to increase the log severity; alternatively, run the info-center source command to change the rule for outputting log information to the channel and reduce the minimum severity of logs that can be output to the channel.

  • The log display or console display function is disabled, so log information cannot be output to the console or user terminal.

    1. Run the terminal monitor command to enable the terminal to display the information sent by the information center.

    2. Run the terminal logging command to enable the terminal to display log information.

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Updated: 2020-01-07

Document ID: EDOC1000060766

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