Kapacitor alert to warn on inodes percent used

inodes_alert.tick

// inodes_alert example

// DEFINE: kapacitor define inodes_alert -type stream -tick inodes_alert.tick -dbrp telegraf.ninety_days
// ENABLE: kapacitor enable inodes_alert

// Parameters
var period = 5m
var every = 30s
var warn = 90
var crit = 95

var used = stream
|from()
  .measurement('disk')
  .groupBy('host', 'path')
|window()
  .period(period)
  .every(every)
|max('inodes_used')

var total = stream
|from()
  .measurement('disk')
  .groupBy('host', 'path')
|window()
  .period(period)
  .every(every)
|max('inodes_total')

var alert = used
  |join(total)
    .as('used','total')
    .tolerance(1s)
  |eval(lambda: float("used.max" / "total.max") * 100.00).as('inodes_used_percent')

// Thresholds
|alert()
    .id('{{ index .Tags "host"}}')
    .message('{{ .Level }}: Volume {{ index .Tags "path"}} inodes used is {{ index .Fields "inodes_used_percent" }}% on HOST {{ .ID }}')
    .warn(lambda: "inodes_used_percent" > warn)
    .crit(lambda: "inodes_used_percent" > crit)
//    .stateChangesOnly()
// Alert
alert
  .log('/tmp/inodes_alert_log.txt')
  .hipChat()
  //  .room('ias_rampart_alerts')
    .room('Kapacitor Testing')
    .token('iprzorBbswdEbDTpOLC1V8I0uAZqllh9KooCGVxz')