[stable/prometheus] Added configPath parameter (#10976)

* Added configPath parameter

Signed-off-by: Ivan Kiselev <ivan@messagebird.com>

* bump chart version

Signed-off-by: Ivan Kiselev <ivan@messagebird.com>

stable/prometheus/Chart.yaml

@@ -1,5 +1,5 @@
 name: prometheus
-version: 8.4.8
+version: 8.4.9
 appVersion: 2.6.1
 description: Prometheus is a monitoring system and time series database.
 home: https://prometheus.io/

stable/prometheus/README.md

@@ -230,6 +230,7 @@ Parameter | Description | Default
 `server.image.tag` | Prometheus server container image tag | `v2.6.1`
 `server.image.pullPolicy` | Prometheus server container image pull policy | `IfNotPresent`
 `server.enableAdminApi` |  If true, Prometheus administrative HTTP API will be enabled. Please note, that you should take care of administrative API access protection (ingress or some frontend Nginx with auth) before enabling it. | `false`
+`server.configPath` |  Path to a prometheus server config file on the container FS  | `/etc/config/prometheus.yml`
 `server.global.scrape_interval` | How frequently to scrape targets by default | `1m`
 `server.global.scrape_timeout` | How long until a scrape request times out | `10s`
 `server.global.evaluation_interval` | How frequently to evaluate rules | `1m`

stable/prometheus/templates/server-deployment.yaml

@@ -89,7 +89,7 @@ spec:
           {{- if .Values.server.retention }}
             - --storage.tsdb.retention={{ .Values.server.retention }}
           {{- end }}
-            - --config.file=/etc/config/prometheus.yml
+            - --config.file={{ .Values.server.configPath }}
             - --storage.tsdb.path={{ .Values.server.persistentVolume.mountPath }}
             - --web.console.libraries=/etc/prometheus/console_libraries
             - --web.console.templates=/etc/prometheus/consoles

stable/prometheus/templates/server-statefulset.yaml

@@ -82,7 +82,7 @@ spec:
           {{- if .Values.server.retention }}
             - --storage.tsdb.retention={{ .Values.server.retention }}
           {{- end }}
-            - --config.file=/etc/config/prometheus.yml
+            - --config.file={{ .Values.server.configPath }}
             - --storage.tsdb.path={{ .Values.server.persistentVolume.mountPath }}
             - --web.console.libraries=/etc/prometheus/console_libraries
             - --web.console.templates=/etc/prometheus/consoles

stable/prometheus/values.yaml

@@ -555,6 +555,9 @@ server:
   ## series. This is disabled by default.
   enableAdminApi: false
 
+  ## Path to a configuration file on prometheus server container FS
+  configPath: /etc/config/prometheus.yml
+
   global:
     ## How frequently to scrape targets by default
     ##