Inhibit job-level alerts if a service-level alert is firing

roles/float-infra-prometheus/templates/alertmanager.yml.j2

@@ -59,6 +59,12 @@ inhibit_rules:
     target_match:
       alertname: 'HostUnreachable'
     equal: ['host']
+  # Inhibit job-level alerts if a service-level alert is available.
+  - source_match:
+      alertname: 'ProbeFailure'
+    target_match_re:
+      alertname: '(ServiceDegraded|ServiceAvailabilityTooLow)'
+    equal: ['float_service']
 
 receivers:
   - name: default