Log messages generated by the vRouter are associated with one of the following levels of severity.
Emergency. A general system failure or other serious failure has occurred, such that the system is unusable.
Alert. Immediate action is required to prevent the system from becoming unusable; for example, because a network link has failed or the database has become compromised.
Critical. A critical condition exists, such as resource exhaustion—for example, the system is out of memory, CPU processing thresholds are being exceeded, or a hardware failure has occurred.
Error. An error condition has occurred, such as a failed system call. However, the system is still functioning.
Warning. An event has occurred that has the potential to cause an error, such as invalid parameters being passed to a function. This situation should be monitored.
Notice. A normal but significant event has occurred, such as an unexpected event. It is not an error, but could potentially require attention.
Informational. Normal events of interest are being reported as they occur.
Debugging level. Trace-level information is being provided.