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# Logging Configuration

Use your ownCloud log to review system status, or to help debug problems. You may adjust logging levels, and choose between using the ownCloud log or your syslog.

## Parameters

Logging levels range from DEBUG, which logs all activity, to FATAL, which logs only fatal errors.

- 0: DEBUG: Debug, informational, warning, and error messages, and fatal issues.
- 1: INFO: Informational, warning, and error messages, and fatal issues.
- 2: WARN: Warning, and error messages, and fatal issues.
- 3: ERROR: Error messages and fatal issues.
- 4: FATAL: Fatal issues only.

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 ownCloud Web GUI.

### ownCloud

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 owncloud.log will be created in the directory which has been configured by the datadirectory parameter in `config/config.php`.

The desired date format can optionally be defined using the logdateformat parameter in `config/config.php`. 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" => "owncloud.log",
    "loglevel" => "3",
    "logdateformat" => "F d, Y H:i:s",

### syslog

All log information will be sent to your default syslog daemon.

    "log_type" => "syslog",
    "logfile" => "",
    "loglevel" => "3",

### Conditional Logging Level Increase

You can configure the logging level to automatically increase to `debug` when one of three conditions are met:

# `shared_secret`: If a request parameter with the name `log_secret` is set to this value the condition is met.

# `users`: If the current request is done by one of the specified users, this condition is met.

# `apps`: If the log message is invoked by one of the specified apps, this condition is met.

The following example demonstrates what all three conditions look like:

    'log.condition' => [
           'shared_secret' => '57b58edb6637fe3059b3595cf9c41b9',
           'users' => ['sample-user'],
           'apps' => ['files'],
    ],

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