Refactor migrations to use external ConfigMap instead of chart-embedded SQL files

Author: saidtaylan

charts/supabase/templates/db/statefulset.yaml

@@ -48,12 +48,18 @@ spec:
 
               echo "Copying user-defined migration scripts..."
               cp /custom-migrations/* /initdb.d/migrations/ || echo "Skip migrations"
+              {{- if and .Values.db.migrations.enabled .Values.db.migrations.existingConfigMap }}
+              echo "Copying external migrations from ConfigMap..."
+              cp {{ .Values.db.migrations.mountPath }}/* /initdb.d/migrations/ || echo "No external migrations found"
+              {{- end }}
               echo "Initialization scripts are ready"
           volumeMounts:
             - mountPath: /custom-init-scripts
               name: custom-init-scripts
-            - mountPath: /custom-migrations
+            {{- if and .Values.db.migrations.enabled .Values.db.migrations.existingConfigMap }}
+            - mountPath: {{ .Values.db.migrations.mountPath }}
               name: custom-migrations
+            {{- end }}
             - mountPath: /initdb.d
               name: initdb-scripts-data
       containers:
@@ -158,6 +164,11 @@ spec:
         - name: custom-migrations
           configMap:
             name: {{ include "supabase.db.fullname" . }}-migrations
+        {{- if and .Values.db.migrations.enabled .Values.db.migrations.existingConfigMap }}
+        - name: user-migrations
+          configMap:
+            name: {{ .Values.db.migrations.existingConfigMap }}
+        {{- end }}
         {{- with .Values.db.volumes }}
           {{- toYaml . | nindent 8 }}
         {{- end }}

charts/supabase/values.yaml

@@ -183,6 +183,16 @@ db:
   affinity: {}
   # Additional migration scripts can be defined here
   config: {}
+  # Database migrations from external ConfigMap
+  # Users should create ConfigMap before installing the chart:
+  # kubectl create configmap my-migrations --from-file=./migrations/ -n namespace
+  migrations:
+    # Enable mounting external migrations ConfigMap
+    enabled: true
+    # Name of existing ConfigMap containing migration SQL files
+    existingConfigMap: "custom-migrations"
+    # Mount path for migrations in init container
+    mountPath: /custom-migrations
 
 # Studio Application
 studio: