[jaeger] Add extraVolumes/extraVolumeMounts support to deployment

The v4.2.0 chart rewrite removed the ability to mount custom volumes
on the Jaeger deployment, which is needed for storage backends like
Badger that require local persistent volumes.

This adds extraVolumes and extraVolumeMounts fields to the jaeger
values section, following the same pattern already used by the spark,
esIndexCleaner, esRollover, and esLookback job templates.

Fixes #737

Signed-off-by: Greg Olmstead <greg@nubelo.io>

Author: maynardflies

charts/jaeger/Chart.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: common
   repository: https://charts.bitnami.com/bitnami
-  version: 2.34.0
-digest: sha256:63de10c1f68bedef391890484e1e29f2efd54e6dc7239ca60f0a572042efd4f3
-generated: "2026-02-03T13:47:26.844621Z"
+  version: 2.36.0
+digest: sha256:a9e48d71c1ab826e89a4115379550999c1787634d834acfe22122560393685b4
+generated: "2026-02-10T19:36:02.0023006+01:00"

charts/jaeger/Chart.yaml

@@ -3,7 +3,7 @@ appVersion: 2.14.1
 description: A Jaeger Helm chart for Kubernetes
 name: jaeger
 type: application
-version: 4.4.7
+version: 4.4.8
 # Artifact Hub annotations
 # The jaeger image is whitelisted from security scanning because the reported
 # CVEs are in the upstream Alpine base image (OpenSSL libcrypto3/libssl3) and

charts/jaeger/templates/jaeger/jaeger-deploy.yaml

@@ -111,6 +111,9 @@ spec:
               mountPath: /etc/jaeger/ui-config.json
               subPath: ui-config.json
         {{- end }}
+        {{- with .Values.jaeger.extraVolumeMounts }}
+            {{- toYaml . | nindent 12 }}
+        {{- end }}
       securityContext:
         {{- toYaml .Values.jaeger.podSecurityContext | nindent 8 }}
       serviceAccountName: {{ template "jaeger.fullname" . }}
@@ -125,6 +128,9 @@ spec:
           configMap:
             name: ui-config
       {{- end }}
+      {{- with .Values.jaeger.extraVolumes }}
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
     {{- with .Values.jaeger.affinity }}
       affinity:
         {{- toYaml . | nindent 8 }}

charts/jaeger/values.yaml

@@ -217,6 +217,13 @@ jaeger:
     runAsGroup: 10001
     fsGroup: 10001
   securityContext: {}
+  extraVolumes: []
+    # - name: badger-data
+    #   persistentVolumeClaim:
+    #     claimName: jaeger-badger-data
+  extraVolumeMounts: []
+    # - name: badger-data
+    #   mountPath: /badger
 
 # ------------------------------------------------------------------------------
 # Storage Connection Settings