add health check

health_check.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+TIMEOUT=2
+
+function no_good {
+	cd /home/kkenny/src/docker/pihole
+	git pull
+	echo "[$(date)] $1 has failed, restarting." >> health.log
+	docker compose down >> health.log 2>&1
+       	docker compose up $1 -d >> health.log 2>&1
+	exit 1
+}
+
+case $(hostname) in
+	pi501)
+		dig google.com @10.200.53.241 >/dev/null 2>&1 || no_good "pihole1"
+		;;
+	pi502)
+		dig google.com @10.200.53.242 >/dev/null 2>&1 || no_good "pihole2"
+		;;
+	pi503)
+		dig google.com @10.200.53.243 >/dev/null 2>&1 || no_good "pihole3"
+		;;
+esac
+