fix: Prevent division by 0 for other SLOs

apps/k8s01/mastodon/slo.yaml

@@ -12,7 +12,7 @@ spec:
       sli:
         events:
           errorQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="mastodon",ingress="mastodon",status=~"(5..|429)"}[{{.window}}]))
-          totalQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="mastodon",ingress="mastodon"}[{{.window}}]))
+          totalQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="mastodon",ingress="mastodon"}[{{.window}}])) > 0 OR vector(1)
       alerting:
         name: MastodonHighErrorRate
         labels:
@@ -32,7 +32,7 @@ spec:
               -
               sum(rate(nginx_ingress_controller_request_duration_seconds_bucket{exported_namespace="mastodon",ingress="mastodon",le="0.25",verb!="WATCH"}[{{.window}}]))
             )
-          totalQuery: sum(rate(nginx_ingress_controller_request_duration_seconds_count{exported_namespace="mastodon",ingress="mastodon",method!="WATCH"}[{{.window}}]))
+          totalQuery: sum(rate(nginx_ingress_controller_request_duration_seconds_count{exported_namespace="mastodon",ingress="mastodon",method!="WATCH"}[{{.window}}])) > 0 OR vector(1)
       alerting:
         name: MastodonLatencyAlert
         labels:

apps/k8s01/matrix/slo.yaml

@@ -12,7 +12,7 @@ spec:
       sli:
         events:
           errorQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="matrix",ingress="matrix-synapse",status=~"(5..|429)"}[{{.window}}]))
-          totalQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="matrix",ingress="matrix-synapse"}[{{.window}}]))
+          totalQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="matrix",ingress="matrix-synapse"}[{{.window}}])) > 0 OR vector(1)
       alerting:
         name: MatrixHighErrorRate
         labels:

apps/k8s01/nextcloud/slo.yaml

@@ -12,7 +12,7 @@ spec:
       sli:
         events:
           errorQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="nextcloud",ingress="nextcloud",status=~"(5..|429)"}[{{.window}}]))
-          totalQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="nextcloud",ingress="nextcloud"}[{{.window}}]))
+          totalQuery: sum(rate(nginx_ingress_controller_requests{exported_namespace="nextcloud",ingress="nextcloud"}[{{.window}}])) > 0 OR vector(1)
       alerting:
         name: NextcloudHighErrorRate
         labels: