3 Consolidated Logging
Distributed Systems Administration Utilities offers consolidated logging features, including the standard logging features offered by syslogd, and syslog Next Generation
The next sections of this document describe their use.
3.1 Introduction to syslog
syslogd is a ubiquitous component of UNIX systems that performs system logging activities. syslogd reads from a set of log sources such as /dev/log and /dev/klog and processes the log messages as instructed in /etc/syslog.conf. Applications log messages to syslog using the syslog call (see syslog(3C)).
For more information on syslogd, see syslogd(1M).
3.1.1 syslog Message Format
Asyslog message has a standard format that includes an optional priority level and facility. The priority level indicates the urgency of the message. The facility indicates the subsystem that posted the message. Table
Table
Message | Description |
|
|
LOG_ALERT | Take action immediately, |
|
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LOG_CRIT | Critical conditions have occurred. |
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LOG_DEBUG | |
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LOG_EMERG | System is unusable. |
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LOG_ERR | Error conditions. |
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LOG_INFO | Informational message. |
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LOG_NOTICE | Normal but significant conditions that warrant attention. |
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LOG_WARNING | Warning conditions. |
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Table
Table
Message | Description |
|
|
LOG_AUTH | Security and authorization messages (DEPRECATED; use |
| LOG_AUTHPRIV instead). |
|
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LOG_AUTHPRIV | Security and authorization messages (private). |
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LOG_CRON | Clock daemon (cron and at). |
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LOG_DAEMON | System daemons without separate facility values. |
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LOG_FTP | Ftp daemon. |
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LOG_KERN | Kernel messages. |
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LOG_LOCAL0 through LOC_LOCAL7 | Reserved for local use. |
|
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LOG_LPR | Line printer subsystem. |
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3.1 Introduction to syslog | 41 |