kapa-smtp-email.txt

var data = stream
  |from()
    .database('telegraf')
    .retentionPolicy('autogen')
    .measurement('cpu')
    .groupBy('host')
    .where(lambda: "cpu" == 'cpu-total')
  |eval(lambda: "usage_user" + "usage_system")
    .as('usage_total')
    .keep()
  |log()
  |window()
    .period(period)
    .every(every)
  |mean('usage_total')
    .as('stat')

// Alert
alert
  .log('/tmp/cpu_alert_log.txt')
  .alerta()

alert
  .details('''
<h1>{{ .ID }}</h1>
<b>{{ .Message }}</b>
Value: {{ index .Fields "stat" }}
Sigma: {{ index .Fields "sigma" }}
''')
  .stateChangesOnly()
  .flapping(0.25, 0.5)
  .email()