Hawkular is requesting the ability to tag alerts. Hawkular Alerts made an early design decision to not allow alert tagging. We saw it as unnecessary manipulation of a 'static' entity and too much in the area of alert management, as opposed to alert generation, notification and lifecycle.
But it seems we need to extend our alert management capabilities. An alert will continue to inherit the generating trigger's tags. Also, we may want to extend this to include Event tagging, in anticipation of a similar client need.