Add self-hosted guide for setting up geo-supported management (#149)

* Add Geolocation support guide and update navigation

* Expanded geolocation support guide in NetBird documentation

* geo support docs reviewed

---------

Co-authored-by: Julia <julia@netbird.io>

src/components/NavigationDocs.jsx

@@ -75,6 +75,7 @@ export const docsNavigation = [
             { title: 'Advanced guide', href: '/selfhosted/selfhosted-guide' },
             { title: 'Management SQLite Store', href: '/selfhosted/sqlite-store'},
             { title: 'Supported IdPs', href: '/selfhosted/identity-providers' },
+            { title: 'Management Geolocation', href: '/selfhosted/geo-support' },
             { title: 'Troubleshooting', href: '/selfhosted/troubleshooting' },
         ],
     },

src/pages/selfhosted/geo-support.mdx

@@ -0,0 +1,60 @@
+# Management Geolocation
+
+Traditionally, NetBird's management system has relied on Geolocation databases. In version 0.26.0, we introduced support for posture checks. From this version onwards, NetBird uses the GeoLite2 City database from [MaxMind](https://www.maxmind.com) to identify a peer's geographical location based on its IP address.
+
+<Note>
+Even though we distribute the databases, MaxMind retains ownership. Please refer to the [license agreement](https://www.maxmind.com/en/geolite2/eula) details on MaxMind's website for specifics.
+</Note>
+
+This guide outlines the steps to configure Management with the GeoLite2 database
+
+## Downloading the databases
+
+Upon NetBird Application startup, our management checks if the GeoLite2 databases exist in its data directory. If not present, the
+databases will be downloaded from the following URLs:
+
+- GeoLite2 City Database: [Download Link](https://pkgs.netbird.io/geolocation-dbs/GeoLite2-City/download?suffix=tar.gz)
+- GeoLite2 City Database (SHA256): [Download Link](https://pkgs.netbird.io/geolocation-dbs/GeoLite2-City/download?suffix=tar.gz.sha256)
+- GeoLite2 City CSV Database: [Download Link](https://pkgs.netbird.io/geolocation-dbs/GeoLite2-City-CSV/download?suffix=zip)
+- GeoLite2 City CSV Database (SHA256): [Download Link](https://pkgs.netbird.io/geolocation-dbs/GeoLite2-City-CSV/download?suffix=zip.sha256)
+
+After downloading, the management system prepares the databases for use. If the databases already exist, the system will load and utilize the existing ones.
+
+## Updating the GeoLite2 Database
+
+The GeoLite2 databases are updated twice a week to reflect changes in geolocation data. It's crucial to keep your
+local GeoLite2 databases updated. You can achieve this manually through the script provided below.
+
+Here are the steps to update the GeoLite2 databases:
+
+### Step 1. Switch to the infrastructure files directory:
+```bash
+cd netbird/infrastructure_files/
+```
+
+### Step 2. Run the script to download the GeoLite2 databases:
+```bash
+./download-geolite2.sh
+```
+After successfully running the script, two database files (`geonames.db` and `GeoLite2-City.mmdb`) are created in the
+`netbird/infrastructure_files/` directory.
+
+### Step 3. The next step involves moving these files into our management service container.
+
+Move the `geonames.db` database:
+```bash
+docker-compose cp geonames.db management:/var/lib/netbird/
+```
+
+Move the `GeoLite2-City.mmdb` database:
+```bash
+docker-compose cp GeoLite2-City.mmdb management:/var/lib/netbird/
+```
+
+4. To complete the process,  restart the management service to ensure that it loads the updated databases:
+
+```bash
+docker-compose restart management
+```
+This completes the upgrade process. Your GeoLite2 databases are now up-to-date.
+By following the guide above, your GeoLite2 databases should always be updated with the latest geolocation data.