Skip hosts if metrics arent available for alerting
Skip hosts if metrics arent available for alerting

mrkeng/alerta,skob/alerta,skob/alerta,guardian/alerta,skob/alerta,guardian/alerta,guardian/alerta,0312birdzhang/alerta,0312birdzhang/alerta,guardian/alerta,skob/alerta,mrkeng/alerta,mrkeng/alerta,0312birdzhang/alerta,mrkeng/alerta