logfile - write a logfile
Writes a log file of the status of monitors.
The logfile format is:
datetime monitor-name: status; VFC=vfc (message) (execution-time)
where the fields have the following meanings:
- datetime
the datetime of the entry. Format is controlled by the
dateformatconfiguration option.- monitor-name
the name of the monitor
- status
either
okif the monitor succeeded, orfailed since YYYY-MM-DD HH:MM:SS- vfc
the virtual failure count: the number of failures of the monitor beyond its tolerance. Not present for ok lines.
- message
the message the monitor recorded as the reason for failure. Not present for ok lines.
- execution-time
the time the monitor took to execute its check
- filename
- Type:
string
- Required:
true
the filename to write to. Rotating this file underneath SimpleMonitor will likely result to breakage. If you would like the logfile to rotate automatically based on size or age, see the logfileng logger.
- buffered
- Type:
boolean
- Required:
false
- Default:
true
disable to use unbuffered writes to the logfile, allowing it to be watched in real time. Otherwise, you will find that updates don’t appear in the file immediately.
- only_failures
- Type:
boolean
- Required:
false
- Default:
false
set to have only monitor failures written to the log file (almost, but not quite, turning it into an alerter)