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In computing, syslog (/ ˈ s ɪ s l ɒ ɡ /) is a standard for message logging. It allows separation of the software that generates messages, the system that stores them, and the software that reports and analyzes them. Each message is labeled with a facility code, indicating the type of system generating the message, and is assigned a severity ...
As with metrics, an application developer must instrument the application upfront and ship new code if different logging information is required. Logs typically include a timestamp and severity level. An event (such as a user request) may be fragmented across multiple log lines and interweave with logs from concurrent events.
Fault management systems may use complex filtering systems to assign alarms to severity levels. These can range in severity from debug to emergency, as in the syslog protocol. [3] Alternatively, they could use the ITU X.733 Alarm Reporting Function's perceived severity field.
Architecture of the software based on a number of 'plugins' that provide additional functionality. Triggers / alerts Capable of detecting threshold violations in network data, and alerting the administrator in some form. MIB compilter Able to read MIB data, to quickly understand what resources are being managed. Web app Runs as a web-based ...
Event logging: regardless of the event type, a good practice should be to record the event and the actions taken. The event can be logged as an Event Record or it can be left as an entry in the system log of the device. Alert and human intervention: for events that requires human intervention, the event needs to be escalated.
NetFlow is a feature that was introduced on Cisco routers around 1996 that provides the ability to collect IP network traffic as it enters or exits an interface. By analyzing the data provided by NetFlow, a network administrator can determine things such as the source and destination traffic, class of service, and the causes of congestion.
Octopussy completely conforms to RfC 3164 and RfC 3195 of the IETF, describing syslog as the logging mechanism in Unix-like/BSD operating systems. [12] [13] That especially includes the internal representation of the facility and severity-principle where applicable. The software is driven by a semi-stateful event correlation engine.
A server log is a log file (or several files) automatically created and maintained by a server consisting of a list of activities it performed. A typical example is a web server log which maintains a history of page requests. The W3C maintains a standard format (the Common Log Format) for web server log files, but other proprietary formats ...