The event severity object indicates the severity level of
this notification. The severity levels are:
'emergency': The notification indicates that a
devastating failure has occurred; the
system or service is unusable. Immediate
operator intervention is required.
'alert': The notification indicates that a
devastating failure is imminent that will
render the system unusable. Immediate
operator attention is necessary.
'critical': The notification indicates that a
service impacting failure is likely to
occur soon; an error has occurred that
was not appropriately handled by the
system. Operator attention is needed as
soon as possible.
'error': The notification contains important
operational state information and may
indicate that the system has experienced
a temporary impairment or an error that
was appropriately handled by the system.
An operator should review the notification
soon to determine if action is needed.
'warning': The notification contains important
operational state information that may be
a precursor to an error occurrence. An
operator should review the notification
soon to determine if action is needed.
'notice': The notification contains health or
operational state information that may be
pertinent to the health of the system but
does not require the attention of the
administrator at this time.
'informational': The notification contains interesting
system-level information that is valuable
to an administrator, however, the event
itself does not indicate a failure or
impairment condition.
'debug': The notification provides supplemental
information that may be beneficial toward
diagnosing or resolving a problem but does
not in itself provide operational health
status.