diff --git a/misc/Deployment.md b/misc/Deployment.md
new file mode 100644
index 0000000..abf4930
--- /dev/null
+++ b/misc/Deployment.md
@@ -0,0 +1,43 @@
+# System deployment
+
+___
+
+## Prerequisites
+
+## Client
+
+## Database
+
+## Backend / Flask app
+
+In order to not have complicated and error-prone copying manoevers a direct deployment from the repo is used using git.
+
+### File structure
+
+### Steps
+
+1) Created a ssh-key for the user that does the installation on the server following the Github [instructions](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent).
+2) Deploy generated key to the Github user account.
+3) In the shell, activate ssh-agent and add the key. For example:
+
+```bash
+eval ($ssh-agent)
+ssh-add ~/.ssh/od_ed25519
+```
+
+4) Change to deployment folder
+
+```bash
+cd /var/www/brecal_test
+```
+
+5) Perform sparse checkout on the Flask server subtree
+
+```bash
+git clone -n git@github.com:puls200/brecal.git <target_folder>
+cd <target_folder>
+git sparse-checkout set --no-cone src/server
+git checkout
+```
+
+6) Database credentials are stored outside the web root, we are using /var/www/secure. Here the file ```connection_data.json``` is placed, a different named copy for each instance.
diff --git a/src/server/BreCal/__init__.py b/src/server/BreCal/__init__.py
index e15818a..8f0eddb 100644
--- a/src/server/BreCal/__init__.py
+++ b/src/server/BreCal/__init__.py
@@ -13,8 +13,6 @@ from .api import ships
 from .api import login
 from .api import user
 
-sessions = dict()
-
 def create_app(test_config=None):
 
     app = Flask(__name__, instance_relative_config=True)
@@ -44,7 +42,7 @@ def create_app(test_config=None):
 
 
     logging.basicConfig(filename='brecal.log', level=logging.DEBUG, format='%(asctime)s | %(name)s | %(levelname)s | %(message)s')
-    local_db.initPool()
+    local_db.initPool(os.path.dirname(app.instance_path))
     logging.info('App started')
 
     return app
diff --git a/src/server/BreCal/connection_data.json b/src/server/BreCal/connection_data.json
deleted file mode 100644
index 16b58c0..0000000
--- a/src/server/BreCal/connection_data.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-"host" : "localhost",
-"port" : 33306,
-"user" : "ds",
-"password" : "HalloWach_2323XXL!!",
-"pool_name" : "brecal_pool",
-"pool_size" : 20,
-"database" : "bremen_calling",
-"autocommit" : true
-}
\ No newline at end of file
diff --git a/src/server/BreCal/local_db.py b/src/server/BreCal/local_db.py
index 5b8c631..6787431 100644
--- a/src/server/BreCal/local_db.py
+++ b/src/server/BreCal/local_db.py
@@ -4,13 +4,16 @@ import logging
 import json
 import os
 
-connection_pool = None
+config_path = None
 
-def initPool():
+def initPool(instancePath):
     try:
+        global config_path
+        if(config_path == None):
+            config_path = os.path.join(instancePath,'../../../secure/connection_data_test.json');
+
+        print (config_path)
 
-        config_path = './src/server/BreCal/connection_data.json'
-        print (os.getcwd())
         if not os.path.exists(config_path):
             print ('cannot find ' + config_path)
             exit(1)
@@ -31,7 +34,7 @@ def initPool():
         print(e)
 
 def getPoolConnection():
-    config_path = './src/server/BreCal/connection_data.json'
+    global config_path
     f = open(config_path);
     connection_data = json.load(f)
     return mysql.connector.connect(**connection_data)
\ No newline at end of file
diff --git a/src/server/flaskapp.wsgi b/src/server/flaskapp.wsgi
index 1dc7818..e734f70 100644
--- a/src/server/flaskapp.wsgi
+++ b/src/server/flaskapp.wsgi
@@ -1,8 +1,12 @@
+import os
 import sys
 import logging
 
-sys.path.insert(0, '/var/www/brecal/server')
-sys.path.insert(0, '/var/www/brecal/venv/lib/python3.10/site-packages/')
+sys.path.insert(0, '/var/www/brecal_test/src/server')
+sys.path.insert(0, '/var/www/venv/lib/python3.10/site-packages/')
+
+# set the key
+os.environ['SECRET_KEY'] = 'zdiTz8P3jXOc7jztIQAoelK4zztyuCpJ'
 
 # Set up logging
 logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)