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# Make sure Pi-hole is responding.
template: pihole_last_collected_secs
on: pihole.dns_queries_total
class: Ad Filtering
component: Pi-hole
type: Latency
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
class: Ad Filtering
component: Pi-hole
type: Errors
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 over 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
class: Ad Filtering
component: Pi-hole
type: Errors
every: 10s
units: seconds
calc: $ago
warn: $this > 60 * 60 * 24 * 8
crit: $this > 60 * 60 * 24 * 8 * 2
info: gravity.list (blocklist) file last update time
to: sysadmin
# Gravity file check (gravity.list).
template: pihole_blocklist_gravity_file
on: pihole.blocklist_last_update
class: Ad Filtering
component: Pi-hole
type: Errors
every: 10s
units: boolean
calc: $file_exists
crit: $this != 1
delay: up 2m down 5m
info: gravity.list (blocklist) file existence state (0: exists, 1: not-exists)
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
class: Ad Filtering
component: Pi-hole
type: Errors
every: 10s
units: boolean
calc: $enabled
warn: $this != 1
delay: up 2m down 5m
info: unwanted domains blocking status (0: enabled, 1: disabled)
to: sysadmin
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