1 files changed, 67 insertions, 0 deletions
diff --git a/health/health.d/pihole.conf b/health/health.d/pihole.conf
new file mode 100644
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+
+ # 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