diff --git a/build_debian.sh b/build_debian.sh
index c960a3946ca6..767dd7b83b79 100755
--- a/build_debian.sh
+++ b/build_debian.sh
@@ -269,6 +269,8 @@ sudo sed -i '
 sudo tee -a $FILESYSTEM_ROOT/etc/monit/monitrc > /dev/null <<'EOF'
 check filesystem root-aufs with path /
   if space usage > 90% for 5 times within 10 cycles then alert
+check filesystem var-log with path /var/log
+  if space usage > 90% for 5 times within 10 cycles then alert
 check system $HOST
   if memory usage > 90% for 5 times within 10 cycles then alert
   if cpu usage (user) > 90% for 5 times within 10 cycles then alert