Format: yyyy-mm-dd HH:MM[:SS] [MST/-0700]. UTC if no timezone. Uses now if blank.
Specify either end date or duration.
Optional.
Optional. Globs, separated by commas (,), pipes (|), or spaces. Example: ny-web01, ny-redis*.
ny-web01, ny-redis*
Optional. Ex: port=637?,cluster=1,iface=lo*|if*. tagvs are globs, separated by pipes (|). Example: port=637?.
port=637?
If the alert becomes unknown during the silence period, automatically forget it.