merge: #10046

10046: Clarify DEAD partition state in Grafana dashboard  r=korthout a=korthout

## Description

<!-- Please explain the changes you made here. -->

As an incident follow-up, this clarifies the DEAD partition health state in the Grafana Zeebe Overview dashboard.

## Related issues

<!-- Which issues are closed by this PR or are related -->

closes #10043 



Co-authored-by: Nico Korthout <nico.korthout@camunda.com>

monitor/README.md

@@ -16,7 +16,7 @@ file](../docker/compose/docker-compose.yaml) in combination with the one [here](
 docker-compose --project-directory ./ -f docker-compose.yml -f ../docker/compose/docker-compose.yaml up -d
 ```
 
-This will start the usual 3 brokers cluster, as well as a Grafana instance (on port 3000) and a Prometheus instance on
+This will start the usual 3 brokers cluster, as well as a Grafana [instance](http://localhost:3000/) (on port 3000; login: u `admin`, p `camunda`) and a Prometheus instance on
 port 9090. The Prometheus instance is configured to scrape the brokers every 5 seconds, and pre-assigns them the
 namespace and pod label as `local` and `broker-*`.
 

monitor/grafana/zeebe-overview.json

@@ -15,7 +15,7 @@
   "editable": true,
   "gnetId": null,
   "graphTooltip": 1,
-  "iteration": 1650543315781,
+  "iteration": 1660048779991,
   "links": [],
   "panels": [
     {
@@ -71,6 +71,14 @@
                     "to": "",
                     "type": 1,
                     "value": "0"
+                  },
+                  {
+                    "from": "",
+                    "id": 3,
+                    "text": "DEAD",
+                    "to": "",
+                    "type": 1,
+                    "value": "-1"
                   }
                 ]
               },
@@ -95,6 +103,10 @@
                     },
                     {
                       "color": "red",
+                      "value": -1
+                    },
+                    {
+                      "color": "orange",
                       "value": 0
                     },
                     {
@@ -1862,5 +1874,5 @@
   "timezone": "",
   "title": "Zeebe Overview",
   "uid": "NzsO1mUnk",
-  "version": 11
-}
+  "version": 12
+}