diff --git a/keystone/meta/prometheus.yml b/keystone/meta/prometheus.yml
index 33a5b3c..d584553 100644
--- a/keystone/meta/prometheus.yml
+++ b/keystone/meta/prometheus.yml
@@ -14,6 +14,17 @@
         summary: "Endpoint check for '{{ $labels.service }}' is down"
         description: >-
             Endpoint check for '{{ $labels.service }}' is down for 2 minutes
+    KeystoneAPIServiceDown:
+      if: >-
+        http_response_status{service=~"keystone.*"} == 0
+      for: 2m
+      labels:
+        severity: down
+        service: "{{ $labels.service }}"
+      annotations:
+        summary: "HTTP check for '{{ $labels.service }}' down"
+        description: >-
+            The HTTP check for '{{ $labels.service }}' is down on {{ $labels.host }} for 2 minutes.
     KeystoneErrorLogsTooHigh:
 {%- endraw %}
       {%- set log_threshold = monitoring.error_log_rate|float %}