Syslog
The syslog protocol was first defined as part of the UNIX operating system to log messages within the OS. Syslogs allow a computer or device to deliver messages to another computer. Syslog messages have a particular format that associates a facility, and a severity or priority with a message.
The facility code allows syslog to group messages from different sources and take action based on this facility or group. The facilities are described in Table 8-7 and the priorities supported are described in Table 8-8.
Facility | Description |
---|---|
Auth | Authorization system |
Cron | Cron facility |
Daemon | System daemon |
Kern | Kernel |
local0-7 | Reserved for locally defined messages |
Lpr | Line printer system |
Mail system | |
News | USENET news ... |
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