Оригинальный syslogd

Cвязка journald + rsyslogd

Форматы syslog сообщений

RFC 3164 (устаревший)

RFC 3164 - The BSD Syslog Protocol

Описание формата сообщения

The first part is called the PRI, the second part is the HEADER, and the third part is the MSG. The total length of the packet MUST be 1024 bytes or less