Logging

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

Run all Magento CLI commands as the 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 develop 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 2.3.1, 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.

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   bin/magento setup:config:set --enable-debug-logging=true
   

2. Flush the cache.

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   bin/magento cache:flush
   

To disable debug logging

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

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   bin/magento setup:config:set --enable-debug-logging=false
   

2. Flush the cache.

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   bin/magento cache:flush
   

Database logging

By default, Magento writes database activity logs to <install_directory>/var/debug/db.log.

To enable database logging

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

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   bin/magento dev:query-log:enable
   

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   bin/magento dev:query-log:disable
   

2. In the production mode, run the command for import configuration, because the bin/magento dev:query-log:disable command adds settings to the app/etc/env.php file:

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   bin/magento app:config:import
   

3. Flush the cache.

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   bin/magento cache:flush
   

Cron logging

With the release of version 2.3.1, 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. As of Magento 2.3.1, you must use the magento command to enable or disable the syslog. The setting in the Admin has been removed.

To enable syslog logging

Logging to syslog is disabled by default.

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

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   bin/magento setup:config:set --enable-syslog-logging=true
   

2. Flush the cache.

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   bin/magento cache:flush
   

To disable syslog logging

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

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   bin/magento setup:config:set --enable-syslog-logging=false
   

2. Flush the cache.

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   bin/magento cache:flush