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file (System Logging)



Hierarchy Level

Release Information

Statement introduced before Junos OS Release 12.1X47 for SRX Series.


Specify the file in which to log data. Starting in Junos OS Release 20.3R1, the change-log is a default option at [edit system syslog file name] hierarchy for SRX Series devices. As the default option, change-log records all the configuration changes. In Junos OS releases earlier than 20.2R1, you need to configure change-log.


  • filename—Specify the name of the file in which to log data.

  • allow-duplicates—Do not suppress the repeated messages.

  • any—Specify all facilities information.

    • alert—Specify the conditions that should be corrected immediately.

    • critical—Specify the critical conditions.

    • emergency—Specify the conditions that cause security functions to stop.

    • error—Specify the general error conditions.

    • info—Specify the information about normal security operations.

    • none—Do not specify any messages.

    • notice—Specify the conditions that should be handled specifically.

    • warning—Specify the general warning conditions.

  • archive—Specify the archive file information.

    • archive-sites—Specify a list of destination URLs for the archived log files.

      • url—Specify the primary and failover URLs to receive archive files.

    • binary-data—Mark file such that it contains binary data.

    • no-binary-data—Do not mark the file such that it contains binary data.

    • files—Specify the number of files to be archived. Range: 1 through 1000 files.

    • size—Specify the size of files to be archived. Range: 65,536 through 1,073,741,824 bytes.

    • world-readable—Allow any user to read the log file.

    • no-world-readable—Do not allow any user to read the log file.

    • start-time—Specify the start time for file transmission. Enter the start time in the yyyy-mm-dd.hh:mm format.

    • transfer-interval—Specify the frequency at which to transfer the files to archive sites.

  • authorization—Specify the authorization system.

  • change-log—Specify the configuration change log.

  • conflict-log—Specify the configuration conflict log.

  • daemon—Specify the various system processes.

  • dfc—Specify the dynamic flow capture.

  • explicit-priority—Include the priority and facility in messages.

  • external—Specify the local external applications.

  • firewall—Specify the firewall filtering system.

  • ftp—Specify the FTP process.

  • interactive-commands—Specify the commands executed by the UI.

  • kernel—Specify the kernel information.

  • match—Specify the regular expression for lines to be logged.

  • ntp—Specify the NTP process.

  • pfe—Specify the Packet Forwarding Engine.

  • security—Specify the security-related information.

  • structured-data—Log the messages in structured log format.

    • brief—Omit English language text from the end of the logged message.

  • user—Specify the user processes.

    • info—Specify the informational messages.

Required Privilege Level

system—To view this statement in the configuration.

system-control—To add this statement to the configuration.