This Logger uses the TCP Input of greylog
see https://docs.typo3.org/typo3cms/CoreApiReference/ApiOverview/Logging/Configuration/Index.html and http://docs.graylog.org/en/2.3/pages/gelf.html
$GLOBALS['TYPO3_CONF_VARS']['LOG']['writerConfiguration'] = [
\TYPO3\CMS\Core\Log\LogLevel::ERROR => [
'Byskr\Typo3GelfWriter\Writer\GelfWriter' => [
'serverUrl' => 'your-greylog-tcp-address'
'serverPort' => 12345,
'additionalData' => [
'key': 'value'
]
]
]
];