Babbys first TICK script.

test_cpu.tick

var warn_threshold = 30
var crit_threshold = 10

var data = stream
    .from().measurement('cpu')
        .where(lambda: "cpu" == 'cpu-total')
        .groupBy('host')

// Do normal alerting
    data.alert()
        .warn(lambda: "usage_idle" < warn_threshold)
        .crit(lambda: "usage_idle" < crit_threshold)
         // Log alerts
        .log('/var/log/kapacitor/alerts.json')