Helm - Loki: Introduce runtimeConfig (#8179)

docs/sources/installation/helm/reference.md

@@ -1794,6 +1794,15 @@ true
 			<td><pre lang="json">
 {}
 </pre>
+</td>
+		</tr>
+		<tr>
+			<td>loki.runtimeConfig</td>
+			<td>object</td>
+			<td>Provides a reloadable runtime configuration file for some specific configuration</td>
+			<td><pre lang="json">
+{}
+</pre>
 </td>
 		</tr>
 		<tr>

production/helm/loki/CHANGELOG.md

@@ -11,6 +11,10 @@ Entries should be ordered as follows:
 
 Entries should include a reference to the pull request that introduced the change.
 
+## 4.1.1
+
+- [FEATURE] Added `loki.runtimeConfig` helm values to provide a reloadable runtime configuration.
+
 ## 4.1
 
 - [BUGFIX] Fix bug in provisioner job that caused the self-monitoring tenant secret to be created with an empty token.

production/helm/loki/Chart.yaml

@@ -4,7 +4,7 @@ name: loki
 description: Helm chart for Grafana Loki in simple, scalable mode
 type: application
 appVersion: 2.7.0
-version: 4.3.0
+version: 4.4.0
 home: https://grafana.github.io/helm-charts
 sources:
   - https://github.com/grafana/loki

production/helm/loki/README.md

@@ -1,6 +1,6 @@
 # loki
 
-![Version: 4.3.0](https://img.shields.io/badge/Version-4.3.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.7.0](https://img.shields.io/badge/AppVersion-2.7.0-informational?style=flat-square)
+![Version: 4.4.0](https://img.shields.io/badge/Version-4.4.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.7.0](https://img.shields.io/badge/AppVersion-2.7.0-informational?style=flat-square)
 
 Helm chart for Grafana Loki in simple, scalable mode
 

production/helm/loki/templates/backend/statefulset-backend.yaml

@@ -82,6 +82,8 @@ spec:
           volumeMounts:
             - name: config
               mountPath: /etc/loki/config
+            - name: runtime-config
+              mountPath: /etc/loki/runtime-config
             - name: data
               mountPath: /var/loki
             {{- if .Values.enterprise.enabled }}
@@ -114,6 +116,9 @@ spec:
           configMap:
             name: {{ include "loki.name" . }}
           {{- end }}
+        - name: runtime-config
+          configMap:
+            name: {{ template "loki.name" . }}-runtime
         {{- if .Values.enterprise.enabled }}
         - name: license
           secret:

production/helm/loki/templates/read/deployment-read.yaml

@@ -90,6 +90,8 @@ spec:
           volumeMounts:
             - name: config
               mountPath: /etc/loki/config
+            - name: runtime-config
+              mountPath: /etc/loki/runtime-config
             - name: tmp
               mountPath: /tmp
             - name: data
@@ -128,6 +130,9 @@ spec:
           configMap:
             name: {{ include "loki.name" . }}
           {{- end }}
+        - name: runtime-config
+          configMap:
+            name: {{ template "loki.name" . }}-runtime
         {{- if .Values.enterprise.enabled }}
         - name: license
           secret:

production/helm/loki/templates/read/statefulset-read.yaml

@@ -101,6 +101,8 @@ spec:
           volumeMounts:
             - name: config
               mountPath: /etc/loki/config
+            - name: runtime-config
+              mountPath: /etc/loki/runtime-config
             - name: tmp
               mountPath: /tmp
             - name: data
@@ -137,6 +139,9 @@ spec:
           configMap:
             name: {{ include "loki.name" . }}
           {{- end }}
+        - name: runtime-config
+          configMap:
+            name: {{ template "loki.name" . }}-runtime
         {{- if .Values.enterprise.enabled }}
         - name: license
           secret:

production/helm/loki/templates/runtime-configmap.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "loki.name" . }}-runtime
+  labels:
+    {{- include "loki.labels" . | nindent 4 }}
+data:
+  runtime-config.yaml: |
+    {{ tpl (toYaml .Values.loki.runtimeConfig) . | nindent 4 }}

production/helm/loki/templates/single-binary/statefulset.yaml

@@ -90,6 +90,8 @@ spec:
               mountPath: /tmp
             - name: config
               mountPath: /etc/loki/config
+            - name: runtime-config
+              mountPath: /etc/loki/runtime-config
             {{- if .Values.singleBinary.persistence.enabled }}
             - name: storage
               mountPath: /var/loki
@@ -126,6 +128,9 @@ spec:
           configMap:
             name: {{ include "loki.name" . }}
           {{- end }}
+        - name: runtime-config
+          configMap:
+            name: {{ template "loki.name" . }}-runtime
         {{- if .Values.enterprise.enabled }}
         - name: license
           secret:

production/helm/loki/templates/tokengen/job-tokengen.yaml

@@ -60,6 +60,8 @@ spec:
               mountPath: /shared
             - name: config
               mountPath: /etc/loki/config
+            - name: runtime-config
+              mountPath: /etc/loki/runtime-config
             - name: license
               mountPath: /etc/loki/license
           env:
@@ -110,6 +112,9 @@ spec:
           configMap:
             name: {{ include "loki.name" . }}
           {{- end }}
+        - name: runtime-config
+          configMap:
+            name: {{ template "loki.name" . }}-runtime
         - name: license
           secret:
           {{- if .Values.enterprise.useExternalLicense }}

production/helm/loki/templates/write/statefulset-write.yaml

@@ -93,6 +93,8 @@ spec:
           volumeMounts:
             - name: config
               mountPath: /etc/loki/config
+            - name: runtime-config
+              mountPath: /etc/loki/runtime-config
             - name: data
               mountPath: /var/loki
             {{- if .Values.enterprise.enabled }}
@@ -125,6 +127,9 @@ spec:
           configMap:
             name: {{ include "loki.name" . }}
           {{- end }}
+        - name: runtime-config
+          configMap:
+            name: {{ template "loki.name" . }}-runtime
         {{- if .Values.enterprise.enabled }}
         - name: license
           secret:

production/helm/loki/values.yaml

@@ -113,6 +113,9 @@ loki:
       {{- tpl (. | toYaml) $ | nindent 4 }}
     {{- end }}
 
+    runtime_config:
+      file: /etc/loki/runtime-config/runtime-config.yaml
+
     {{- with .Values.loki.memcached.chunk_cache }}
     {{- if and .enabled (or .host .addresses) }}
     chunk_store_config:
@@ -213,6 +216,9 @@ loki:
     max_cache_freshness_per_query: 10m
     split_queries_by_interval: 15m
 
+  # -- Provides a reloadable runtime configuration file for some specific configuration
+  runtimeConfig: {}
+
   # -- Check https://grafana.com/docs/loki/latest/configuration/#common_config for more info on how to provide a common configuration
   commonConfig:
     path_prefix: /var/loki