Add SQLite store self hosted guide (#100)

src/components/NavigationDocs.jsx

@@ -38,6 +38,7 @@ export const docsNavigation = [
         links: [
             { title: 'Quickstart guide', href: '/selfhosted/selfhosted-quickstart' },
             { title: 'Advanced guide', href: '/selfhosted/selfhosted-guide' },
+            { title: 'Management SQLite Store', href: '/selfhosted/sqlite-store'},
             { title: 'Supported IdPs', href: '/selfhosted/identity-providers' },
         ],
     },

src/pages/selfhosted/sqlite-store.mdx

@@ -0,0 +1,77 @@
+# Management SQLite Store
+
+In NetBird, the management system traditionally relies on JSON file storage.
+Starting from version 0.24.0, we have introduced **experimental** support for SQLite.
+This addition aims to provide users with enhanced performance and scalability options.
+
+## SQLite Entity Relationship Diagram
+
+For a high-level overview of the SQLite schema, refer to the Entity Relationship Diagram (ERD) below:
+
+<p>
+    <img src="/docs-static/img/selfhosted/sqlite-erd.png" alt="high-level-dia" className="imagewrapper"/>
+</p>
+
+## Using SQLite for Fresh Installations
+
+As of version 0.24.0, the default configuration for fresh installations is JSON file storage. 
+However, users have the option to leverage the benefits of SQLite for new instances. 
+To enable SQLite, update your management.json as follows:
+
+```json
+    "StoreKind": "Sqlite",
+```
+
+Alternatively, you can explicitly set the store to JSON file storage:
+
+```json
+    "StoreKind": "JsonFile",
+```
+
+## Migration from JSON Store
+
+Starting from version 0.24.0, NetBird management provides a subcommand to facilitate migration to SQLite:
+
+```
+$ netbird-mgmt sqlite-migration
+Contains sub-commands to perform JSON file store to SQLite store migration and rollback
+
+Usage:
+  netbird-mgmt sqlite-migration [command]
+
+Available Commands:
+  downgrade   Rollback SQLite store to JSON file store. Please make a backup of the SQLite file before running this command.
+  upgrade     Migrate JSON file store to SQLite store. Please make a backup of the JSON file before running this command.
+
+Flags:
+      --datadir string   server data directory location (default "/var/lib/netbird/")
+  -h, --help             help for sqlite-migration
+
+Global Flags:
+      --log-file string    sets Netbird log path. If console is specified the the log will be output to stdout (default "/var/log/netbird/management.log")
+      --log-level string   (default "info")
+
+Use "netbird-mgmt sqlite-migration [command] --help" for more information about a command.
+```
+
+Follow these steps for migration:
+
+1. Stop NetBird management service.
+2. Backup your data store (`store.json` in `datadir` - default "/var/lib/netbird/").
+3. Run the migration to SQLite subcommand. Example: `netbird-mgmt sqlite-migration upgrade --log-file console`
+4. Enable SQLite in management following [the instruction in the previous section](#using-sq-lite-for-fresh-installations).
+5. Run NetBird management service.
+
+
+## Rollback to JSON File Store
+
+To rollback to the JSON file store, follow these steps:
+
+1. Stop the NetBird management service.
+2. Backup your SQLite data store (`store.db` in `datadir` - default "/var/lib/netbird/").
+3. Run the rollback to JSON file subcommand (Example: `netbird-mgmt sqlite-migration downgrade --log-file console`).
+4. Enable JSON file store in management following [the instructions for fresh installations](#using-sq-lite-for-fresh-installations).
+5. Restart the NetBird management service.
+
+This migration process allows users to seamlessly transition between storage options while maintaining data integrity. 
+Ensure you perform backups before any migration or rollback operations.