# Make sure Pi-hole is responding.

template: pihole_last_collected_secs
      on: pihole.dns_queries_total
    calc: $now - $last_collected_t
   units: seconds ago
   every: 10s
    warn: $this > (($status >= $WARNING)  ? ($update_every) : ( 5 * $update_every))
    crit: $this > (($status == $CRITICAL) ? ($update_every) : (60 * $update_every))
   delay: down 5m multiplier 1.5 max 1h
    info: number of seconds since the last successful data collection
      to: webmaster

  # Blocked DNS queries.

 template: pihole_blocked_queries
       on: pihole.dns_queries_percentage
    every: 10s
    units: %
     calc: $blocked
     warn: $this > ( ($status >= $WARNING ) ? ( 45 ) : ( 55 ) )
     crit: $this > ( ($status >= $CRITICAL) ? ( 55 ) : ( 75 ) )
    delay: up 2m down 5m
     info: percentage of blocked dns queries for the last 24 hour
       to: sysadmin


  # Blocklist last update time.
  # Default update interval is a week.

 template: pihole_blocklist_last_update
       on: pihole.blocklist_last_update
    every: 10s
    units: seconds
     calc: $ago
     warn: $this > 60 * 60 * 24 * 8
     crit: $this > 60 * 60 * 24 * 8 * 2
     info: blocklist last update time
       to: sysadmin


  # Gravity file check (gravity.list).

 template: pihole_blocklist_gravity_file
       on: pihole.blocklist_last_update
    every: 10s
    units: boolean
     calc: $file_exists
     crit: $this != 1
    delay: up 2m down 5m
     info: gravity file existence
       to: sysadmin


  # Pi-hole's ability to block unwanted domains.
  # Should be enabled. The whole point of Pi-hole!

 template: pihole_status
       on: pihole.unwanted_domains_blocking_status
    every: 10s
    units: boolean
     calc: $enabled
     warn: $this != 1
    delay: up 2m down 5m
     info: unwanted domains blocking status
       to: sysadmin