Use sum by for counter metrics

Author: LEDfan

overlays/monitoring/configs/dashboards/shinyproxy-usage.json

@@ -1007,7 +1007,7 @@
           },
           "editorMode": "code",
           "exemplar": true,
-          "expr": "max by (spec_id) (round(increase(authFailed_total{namespace=~\"$namespace\",shinyproxy_realm=~\"$realm\",shinyproxy_instance=~\"$instance\"}[$__rate_interval])))",
+          "expr": "sum by (spec_id) (round(increase(authFailed_total{namespace=~\"$namespace\",shinyproxy_realm=~\"$realm\",shinyproxy_instance=~\"$instance\"}[$__rate_interval])))",
           "interval": "",
           "legendFormat": "__auto",
           "queryType": "randomWalk",
@@ -1104,7 +1104,7 @@
           },
           "editorMode": "code",
           "exemplar": true,
-          "expr": "max by (spec_id) (round(increase(startFailed_total{namespace=~\"$namespace\",shinyproxy_realm=~\"$realm\",shinyproxy_instance=~\"$instance\"}[$__rate_interval])))",
+          "expr": "sum by (spec_id) (round(increase(startFailed_total{namespace=~\"$namespace\",shinyproxy_realm=~\"$realm\",shinyproxy_instance=~\"$instance\"}[$__rate_interval])))",
           "interval": "",
           "legendFormat": "{{spec_id}}",
           "queryType": "randomWalk",
@@ -1201,7 +1201,7 @@
           },
           "editorMode": "code",
           "exemplar": true,
-          "expr": "max by (spec_id) (round(increase(appCrashes_total{namespace=~\"$namespace\",shinyproxy_realm=~\"$realm\",shinyproxy_instance=~\"$instance\"}[$__rate_interval])))",
+          "expr": "sum by (spec_id) (round(increase(appCrashes_total{namespace=~\"$namespace\",shinyproxy_realm=~\"$realm\",shinyproxy_instance=~\"$instance\"}[$__rate_interval])))",
           "interval": "",
           "legendFormat": "{{spec_id}}",
           "queryType": "randomWalk",