chore: add ASC#001

Author: redteampanda-ng

issues/issue_1.rst

@@ -1,18 +1,58 @@
-ABN#001: Placeholder
-====================
+ASC#001: Backend is down after Upgrade to v2
+============================================
 
 .. list-table::
     :header-rows: 1
     :widths: 50, 50
 
     * - Introduced Version
       - Fixed Version
-    * - x
-      - y
+    * - 2.x
+      - N/A
 
-Placeholder Text.
+There is currently a rare issue where the backend is not starting
+after upgrading to v2. This is due to insufficient permissions for
+the MySQL Trigger.
 
-ABN#001: Workaround
+If you upgraded your Security Center to version 2 and everything
+seems to be working fine, you can ignore this advisory.
+
+We are currently working on a more robust upgrade process to prevent
+this from happening in the future.
+
+ASC#001: Workaround
 -------------------
 
-Placeholder Text.
+After a successful upgrade to version 2 ("Upgrade finished" message can be
+seen, see :ref:`admin/upgrade:performing the upgrade`), you might encounter
+the following error message in ``/var/log/asgard-security-center-backend/server.log``:
+
+.. code-block:: json
+
+  {
+    "level": "FATAL",
+    "time": "2024-04-03T18:49:16+02:00",
+    "message": "failed to init database schema",
+    "error": "Error 1142 (42000): TRIGGER command denied to user 'securitycenter-model'@'localhost' for table `asgard-security-center-backend`.`assets`"
+  }
+
+To fix this problem, run the following commands on your backend.
+
+Drop the MySQL trigger (no data will be lost):
+
+.. code-block:: console
+
+  nextron@backend:~$ sudo mysql asgard-security-center-backend -e "DROP TRIGGER IF EXISTS assets_updated_fields;"
+
+Restart the backend service. This will recreate the trigger with the correct permissions
+automatically:
+
+.. code-block:: console
+
+  nextron@backend:~$ sudo systemctl restart asgard-security-center-backend.service
+
+Check if the service is running:
+
+.. code-block:: console
+
+  nextron@backend:~$ sudo systemctl status asgard-security-center-backend.service