netdata/health/health.d/postgres.conf

# you can disable an alarm notification by setting the 'to' line to: silent

 template: total_connection_utilization
       on: postgres.connections_utilization
    class: Utilization
     type: Database
component: PostgreSQL
    hosts: *
   lookup: average -1m unaligned of used
    units: %
    every: 1m
     warn: $this > (($status >= $WARNING)  ? (70) : (80))
     crit: $this > (($status == $CRITICAL) ? (80) : (90))
    delay: down 15m multiplier 1.5 max 1h
     info: average total connection utilization over the last minute
       to: dba