From 29a170617f5bd24907365830665c5b0e8044b7e4 Mon Sep 17 00:00:00 2001
From: ml- <ml@visu.li>
Date: Mon, 16 Nov 2020 18:25:29 +0100
Subject: [PATCH] Fix sum of nginx process connections

nginx_ingress_controller_nginx_process_connections returns four elements
for each pod, one for each "state" (active, reading, waiting, writing).

The value of the element with state "active" is the sum of the other
three elements of other states:

active = reading + waiting + writing

So sum() returns a value that is 2x of the actual amount of connections.
To fix this we simply select elements with state "active".
---
 deploy/grafana/dashboards/nginx.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/deploy/grafana/dashboards/nginx.json b/deploy/grafana/dashboards/nginx.json
index 3641b844a..5369efb68 100644
--- a/deploy/grafana/dashboards/nginx.json
+++ b/deploy/grafana/dashboards/nginx.json
@@ -206,7 +206,7 @@
       "tableColumn": "",
       "targets": [
         {
-          "expr": "sum(avg_over_time(nginx_ingress_controller_nginx_process_connections{controller_pod=~\"$controller\",controller_class=~\"$controller_class\",controller_namespace=~\"$namespace\"}[2m]))",
+          "expr": "sum(avg_over_time(nginx_ingress_controller_nginx_process_connections{controller_pod=~\"$controller\",controller_class=~\"$controller_class\",controller_namespace=~\"$namespace\",state=\"active\"}[2m]))",
           "format": "time_series",
           "instant": false,
           "intervalFactor": 1,