Syslog
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Kaari Zalite A31 2015/2016
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Syslog
Syslog on utiliit, mis genereerib logifailid ning saadab need Linxi süsteemi logifaili, mis asub /var/log/ kaustas, kus neid omakorda analüüsitakse. Syslog'i teateid saadavad välja erinevad võrguseadmed: ruuterid, switchid jms. Syslog'i teated sisaldavad tavaliselt informatsiooni: kus, millal ja miks teade saadeti.
Facility
The Facility value is a way of determining which process of the machine created the message. Since the Syslog protocol was originally written on BSD Unix, the Facilities reflect the names of Unix processes and Daemons. The priority value is calculated using the following formula: Priority = Facility * 8 + Level
| Facility code | Keyword | Description |
|---|---|---|
| 0 | kern | kernel messages |
| 1 | user | user-level messages |
| 2 | mail system | |
| 3 | daemon | system daemons |
| 4 | auth | security/authorization messages |
| 5 | syslog | messages generated internally by syslogd |
| 6 | lpr | line printer subsystem |
| 7 | news | network news subsystem |
| 8 | uucp | UUCP subsystem |
| 9 | clock daemon | |
| 10 | authpriv | security/authorization messages |
| 11 | ftp | FTP daemon |
| 12 | - | NTP subsystem |
| 13 | - | log audit |
| 14 | - | log alert |
| 15 | cron | scheduling daemon |
| 16 | local0 | local use 0 (local0) |
| 17 | local1 | local use 1 (local1) |
| 18 | local2 | local use 2 (local2) |
| 19 | local3 | local use 3 (local3) |
| 20 | local4 | local use 4 (local4) |
| 21 | local5 | local use 5 (local5) |
| 22 | local6 | local use 6 (local6) |
| 23 | local7 | local use 7 (local7) |
Probleemide raskusastmed
| Väärtus | Raskusaste | Võtmesõna | Kirjeldus | Näited |
|---|---|---|---|---|
| 0 | Emergency | emerg | Süsteem on kasutuskõlbmatu | This level should not be used by applications. |
| 1 | Alert | alert | Tuleb koheselt korda teha | Loss of the primary ISP connection. |
| 2 | Critical | crit | Kriitiline seisund | A failure in the system's primary application. |
| 3 | Error | err | Error conditions | An application has exceeded its file storage limit and attempts to write are failing. |
| 4 | Warning | warning | May indicate that an error will occur if action is not taken. | A non-root file system has only 2GB remaining. |
| 5 | Notice | notice | Events that are unusual, but not error conditions. | |
| 6 | Informational | info | Normal operational messages that require no action. | An application has started, paused or ended successfully. |
| 7 | Debug | debug | Information useful to developers for debugging the application. |
