diff --git a/nodes/htz-cloud/sewfile.py b/nodes/htz-cloud/sewfile.py
new file mode 100644
index 0000000..1a03c9e
--- /dev/null
+++ b/nodes/htz-cloud/sewfile.py
@@ -0,0 +1,13 @@
+# this node runs only seafile. Seafile and the mysql server are not
+# managed by bundlewrap.
+
+nodes['htz-cloud.sewfile'] = {
+    'bundles': [
+        'nginx',
+        'seafile',
+    ],
+    'metadata': {
+        'os': 'debian',
+        'os_release': 'buster',
+    },
+}