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How domain's logfiles are rotated in Plesk for Linux

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Kuzma Ivanov
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Applicable to:

  • Plesk for Linux

Question

How domain's logfiles, that are located on /var/www/vhosts/system/example.com/logs, are rotated?

Answer

Once log rotation is completed:

  • All entries from domain's access_log (Apache) and proxy_access_log (nginx) logfiles will be saved to the access_log.processed file.

  • All entries from domain's access_ssl_log (Apache SSL) and proxy_access_ssl_log (nginx SSL) files will be saved to the access_ssl_log.processed file.

This process is done by the statistics utility. While calculating domain statistics, these files are merged not to loose any information.

 

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    Steve Jeffery

    Having updated to Plesk Onyx 17.8.11 (Update 8 at the time of writing) this no longer seems to be the case. Comparing access_ssl_log.processed and access_ssl_log.webstat, the former is missing a lot of information which I believe would have been held in proxy_access_ssl but as that isn't rotated it's difficult to tell exactly.

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    Taras Ermoshin

    @Steve Jeffery

    Here is how the logs files are processed during the statistics aspects of Plesk daily maintenance task:

    1. .webstat files are generated, and all processed data is moved to the .processed log files.
    2. Original log files are truncated, .processed and error logs are rotated.
    3. <...>
    4. Web statistics pages are generated based on the .webstat files, and .webstat files are cleared.

    On the example of proxy_access_ssl_log, during the daily task, the records from it are put into access_ssl_log.processed and then proxy_access_ssl_log is truncated, so all new records from it will be added to the access_ssl_log.processed file during the next run of the daily task.

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