How to enable druid alerts

Hi,

I am trying to enable metrics and alerts on Druid - for testing purpose I setup a one node standalone druid instance where I enabled metrics and can see those metrics in logs as “feed: metrics” - but I could not see any alert metric/s yet.

my common configs:

druid.extensions.loadList=["
druid-kafka-eight", “druid-s3-extensions”, “druid-histogram”, “druid-datasketches”, “druid-lookups-cached-global”]
druid.startup.logging.logProperties=true

druid.request.logging.type=file
druid.request.logging.dir=/usr/local/esp/druid-tmp/var/druid/request
druid.monitoring.emissionPeriod=PT1M
druid.monitoring.monitors=[“com.metamx.metrics.JvmMonitor”]
druid.emitter=logging
druid.emitter.logging.logLevel=info