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Rsyslog is an open-source software utility used on UNIX and Unix-like computer systems for forwarding log messages in an IP network. It implements the basic syslog protocol, extends it with content-based filtering, rich filtering capabilities, flexible configuration options and adds features such as using TCP for transport. The official RSYSLOG website defines the utility as "the rocket-fast system for log processing".〔 〕 == Protocol == Rsyslog uses the standard BSD syslog protocol, specified in RFC 3164. As the text of RFC 3164 is an informational description and not a standard, various incompatible extensions of it emerged. Rsyslog supports many of these extensions. The format of relayed messages can be customized. The most important extensions of the original protocol supported by rsyslog are: * ISO 8601 timestamp with millisecond granularity and timezone information * the addition of the name of relays in the host fields to make it possible to track the path a given message has traversed * reliable transport using TCP * support GSS-API and TLS * logging directly into various database engines. * support for RFC 5424, RFC 5425, RFC 5426 * support for RELP * support for buffered operation modes where messages are buffered locally if the receiver is not ready * complete input/output support for systemd journal 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rsyslog」の詳細全文を読む スポンサード リンク
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