You are reading the documentation for version 2.2. Magento 2.3 is the latest version available. Ensure you are reading the documentation for your version of Magento.

Logging

In addition to the command arguments described in this topic, see Common arguments.

Run all Magento CLI commands as the Magento file system owner.

Debug logging

By default, Magento writes to the debug log (<install_directory>/var/log/debug.log) when it is in default or developer mode, but not when it is in production mode. Use the bin/magento setup:config:set --enable-debug-logging command to change the default value.

As of Magento 2.2.8, you can no longer use the bin/magento config:set dev/debug/debug_logging command to enable or disable debug logging for the current mode.

To enable debug logging

  1. Use the setup:config:set command to enable debug logging for the current mode.

    1
    
    bin/magento setup:config:set --enable-debug-logging=true
    
  2. Flush the cache.

    1
    
    bin/magento cache:flush
    

To disable debug logging

  1. Use the setup:config:set command to disable debug logging for the current mode.

    1
    
    bin/magento setup:config:set --enable-debug-logging=false
    
  2. Flush the cache.

    1
    
    bin/magento cache:flush
    

Database logging

By default, Magento writes database activity logs to the var/debug/db.log file inside the Magento application directory.

To enable database logging

  1. Use the dev:query-log command to enable or disable database logging.

    1
    
    bin/magento dev:query-log:enable
    
    1
    
    bin/magento dev:query-log:disable
    
  2. Flush the cache.

    1
    
    bin/magento cache:flush
    

Cron logging

With the release of version 2.2.8, Magento now creates a separate cron log. Magento recently made cron logging more verbose, which provided more information but lengthened the system.log considerably. Moving cron info to a dedicated log makes both logs easier to read.

By default, Magento writes cron info to <install_directory>/var/log/cron.log.

Syslog logging

By default, Magento writes syslog logs to the operating system syslog file.

To enable syslog logging

  1. Use the config:set command to change the dev/syslog/syslog_logging database value to true.

    1
    
    bin/magento setup:config:set --enable-syslog-logging=true
    
  2. Flush the cache.

    1
    
    bin/magento cache:flush
    

To disable syslog logging

  1. Use the config:set command to change the dev/syslog/syslog_logging database value to false.

    1
    
    bin/magento setup:config:set --enable-syslog-logging=false
    
  2. Flush the cache.

    1
    
    bin/magento cache:flush