feat(helm): Add comprehensive configuration support for ImmuDB

- Add environment variables configuration support
- Add TOML configuration file support via ConfigMap
- Add command line arguments support
- Add S3 storage configuration capabilities
- Add secure credential management via Kubernetes secrets
- Bump chart version to 1.9.8

Resolves #2028

Author: angelAtSequent

helm/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: immudb
 description: The immutable database
 type: application
-version: 1.9.7
+version: 1.9.8
 appVersion: "1.9.7"

helm/templates/configmap.yaml

@@ -0,0 +1,11 @@
+{{- if .Values.config.enabled }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "immudb.fullname" . }}-config
+  labels:
+    {{- include "immudb.labels" . | nindent 4 }}
+data:
+  immudb.toml: |
+{{ .Values.config.data | indent 4 }}
+{{- end }}

helm/templates/statefulset.yaml

@@ -32,12 +32,27 @@ spec:
       - name: immudb-storage
         persistentVolumeClaim:
           claimName: {{ include "immudb.fullname" . }}
+      {{- if .Values.config.enabled }}
+      - name: immudb-config
+        configMap:
+          name: {{ include "immudb.fullname" . }}-config
+      {{- end }}
       containers:
         - name: {{ .Chart.Name }}
           securityContext:
             {{- toYaml .Values.securityContext | nindent 12 }}
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
           imagePullPolicy: {{ .Values.image.pullPolicy }}
+          {{- if or .Values.args .Values.config.enabled }}
+          command: ["/usr/sbin/immudb"]
+          args:
+          {{- if .Values.config.enabled }}
+            - --config=/etc/immudb/immudb.toml
+          {{- end }}
+          {{- range .Values.args }}
+            - {{ . | quote }}
+          {{- end }}
+          {{- end }}
           ports:
             - name: http
               containerPort: 8080
@@ -57,14 +72,23 @@ spec:
             httpGet:
               path: /readyz
               port: metrics
-          {{- if $.Values.adminPassword }}
           env:
+          {{- if $.Values.adminPassword }}
           - name: IMMUDB_ADMIN_PASSWORD
             valueFrom:
               secretKeyRef:
                 name: {{ include "immudb.fullname" . }}-credentials
                 key: immudb-admin-password
           {{- end}}
+          {{- range .Values.env }}
+          - name: {{ .name }}
+            {{- if .value }}
+            value: {{ .value | quote }}
+            {{- else if .valueFrom }}
+            valueFrom:
+              {{- toYaml .valueFrom | nindent 14 }}
+            {{- end }}
+          {{- end }}
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
           volumeMounts:
@@ -73,6 +97,11 @@ spec:
             {{- if $.Values.volumeSubPath.enabled }}
             subPath: {{ $.Values.volumeSubPath.path | quote }}
             {{- end}}
+          {{- if .Values.config.enabled }}
+          - mountPath: /etc/immudb
+            name: immudb-config
+            readOnly: true
+          {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}

helm/values.yaml

@@ -18,6 +18,66 @@ volume:
   size: 5Gi
 adminPassword: ""
 
+# ImmuDB Configuration Options
+# You can configure immudb using three methods:
+# 1. Environment variables (env)
+# 2. Configuration file (config)
+# 3. Command line arguments (args)
+
+# Environment variables for immudb
+# All immudb configuration can be set via environment variables by prefixing with "IMMUDB_"
+# Examples:
+# - IMMUDB_PORT=3323
+# - IMMUDB_ADDRESS=0.0.0.0
+# - IMMUDB_DEVMODE=false
+env: []
+  # - name: IMMUDB_PORT
+  #   value: "3323"
+  # - name: IMMUDB_DEVMODE
+  #   value: "false"
+  # - name: IMMUDB_PGSQL_SERVER
+  #   value: "true"
+  # - name: IMMUDB_S3_STORAGE
+  #   value: "true"
+  # - name: IMMUDB_S3_BUCKET_NAME
+  #   value: "my-immudb-bucket"
+
+# Configuration file for immudb
+# If enabled, creates a ConfigMap with immudb.toml configuration file
+# This will be mounted to /etc/immudb/immudb.toml
+config:
+  enabled: false
+  # Configuration in TOML format
+  # See https://docs.immudb.io/master/running/configuration.html for all options
+  data: |
+    dir = "/var/lib/immudb"
+    network = "tcp"
+    address = "0.0.0.0"
+    port = 3322
+    dbname = "immudb"
+    auth = true
+    devmode = false
+    pgsql-server = true
+    pgsql-server-port = 5432
+    metrics-server = true
+    metrics-server-port = 9497
+    web-server = true
+    web-server-port = 8080
+    # S3 configuration example:
+    # s3-storage = true
+    # s3-bucket-name = "my-immudb-bucket"
+    # s3-endpoint = "s3.amazonaws.com"
+    # s3-location = "us-east-1"
+
+# Command line arguments for immudb
+# These will be passed directly to the immudb command
+# See `immudb --help` for all available options
+args: []
+  # - "--devmode"
+  # - "--pgsql-server=false"
+  # - "--s3-storage"
+  # - "--s3-bucket-name=my-immudb-bucket"
+
 podAnnotations: {}
 
 podSecurityContext: