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Log files can also be managed by the `journald` daemon – a component of `systemd`. The `journald` daemon captures Syslog messages, kernel log messages, initial RAM disk and early boot messages as well as messages written to standard output and standard error output of all services, indexes them and makes this available to the user. The native journal file format, which is a structured and indexed binary file, improves searching and provides faster operation, and it also stores meta data information like time stamps or user IDs. Log files produced by `journald` are by default not persistent, log files are stored only in memory or a small ring-buffer in the `/run/log/journal/` directory. The amount of logged data depends on free memory, when you reach the capacity limit, the oldest entries are deleted. However, this setting can be altered – see xref:Viewing_and_Managing_Log_Files.adoc#s2-Enabling_Persistent_Storage[Enabling Persistent Storage]. For more information on Journal see xref:Viewing_and_Managing_Log_Files.adoc#s1-Using_the_Journal[Using the Journal].
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- By default, these two logging tools coexist on your system. The `journald` daemon is the primary tool for troubleshooting. It also provides additional data necessary for creating structured log messages. Data acquired by `journald` is forwarded into the `/run/systemd/journal/syslog` socket that may be used by `rsyslogd` to process the data further. However, [application]*rsyslog* does the actual integration by default via the `imjournal` input module, thus avoiding the aforementioned socket. You can also transfer data in the opposite direction, from `rsyslogd` to `journald` with use of `omjournal` module. See xref:Viewing_and_Managing_Log_Files.adoc#s1-interaction_of_rsyslog_and_journal[Interaction of Rsyslog and Journal] for further information. The integration enables maintaining text-based logs in a consistent format to ensure compatibility with possible applications or configurations dependent on `rsyslogd`. Also, you can maintain rsyslog messages in a structured format (see xref:Viewing_and_Managing_Log_Files.adoc#s1-structured_logging_with_rsyslog[Structured Logging with Rsyslog]).
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+ By default, only `journald` is installed on your system. You have to install rsyslog youself. Also do not forget to enable and start it after install before continuing with rest of this guide. The `journald` daemon is the primary tool for troubleshooting. It also provides additional data necessary for creating structured log messages. Data acquired by `journald` is forwarded into the `/run/systemd/journal/syslog` socket that may be used by `rsyslogd` to process the data further. However, [application]*rsyslog* does the actual integration by default via the `imjournal` input module, thus avoiding the aforementioned socket. You can also transfer data in the opposite direction, from `rsyslogd` to `journald` with use of `omjournal` module. See xref:Viewing_and_Managing_Log_Files.adoc#s1-interaction_of_rsyslog_and_journal[Interaction of Rsyslog and Journal] for further information. The integration enables maintaining text-based logs in a consistent format to ensure compatibility with possible applications or configurations dependent on `rsyslogd`. Also, you can maintain rsyslog messages in a structured format (see xref:Viewing_and_Managing_Log_Files.adoc#s1-structured_logging_with_rsyslog[Structured Logging with Rsyslog]).
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jvymazal
commented 5 years ago
Updated first section to reflect changes from https://fedoraproject.org/wiki/Changes/NoDefaultSyslog