Use your Nextcloud log to review system status, or to help debug problems. You may adjust logging levels, and choose between using the Nextcloud log or your syslog. If additional audit information is required, you can optionally activate the admin_audit app, which by default generates a separate audit.log file in the data directory.
Logging levels range from DEBUG, which logs all activity, to FATAL, which logs only fatal errors.
- 0: DEBUG: All activity; the most detailed logging.
- 1: INFO: Activity such as user logins and file activities, plus warnings, errors, and fatal errors.
- 2: WARN: Operations succeed, but with warnings of potential problems, plus errors and fatal errors.
- 3: ERROR: An operation fails, but other services and operations continue, plus fatal errors.
- 4: FATAL: The server stops.
By default the log level is set to 2 (WARN). Use DEBUG when you have a problem to diagnose, and then reset your log level to a less-verbose level as DEBUG outputs a lot of information, and can affect your server performance.
Logging level parameters are set in the
config/config.php file, or on the Admin page of your Nextcloud Web GUI.
All log information will be written to a separate log file which can be
viewed using the log viewer on your Admin page. By default, a log
file named nextcloud.log will be created in the directory which has
been configured by the datadirectory parameter in
The desired date format can optionally be defined using the logdateformat parameter in
By default the PHP date function parameter “c” is used, and therefore the
date/time is written in the format “2013-01-10T15:20:25+02:00”. By using the
date format in the example below, the date/time format will be written in the format
“January 10, 2013 15:20:25”.
"log_type" => "owncloud", "logfile" => "nextcloud.log", "loglevel" => "3", "logdateformat" => "F d, Y H:i:s",
All log information will be sent to your default syslog daemon.
"log_type" => "syslog", "logfile" => "", "loglevel" => "3",
Admin audit log¶
If required, the name and path of the audit log file can be customized by using the following command:
occ config:app:set admin_audit logfile --value=/var/log/nextcloud/audit.log