chore: release 3.0.0 (#2216)

website/versioned_docs/version-3.0.0/admin-manual/setup/migrate-from-airtime.md

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+---
+title: Migrate from Airtime
+sidebar_position: 90
+---
+
+This guide walk you though the steps required to migrate your data from Airtime to LibreTime.
+
+:::info
+
+Airtime **linked files** and **watched folders** features are either deprecated or not working in LibreTime.
+
+:::
+
+LibreTime dropped support for Ubuntu 16.04, which is the last supported version of Ubuntu that Airtime supports.
+
+## Make a backup
+
+### Backup the configuration
+
+On common setups, you need to backup the entire `/etc/airtime` folder.
+
+### Backup the database
+
+You need to backup the PostgreSQL database, which holds the entire data of your installation.
+
+Here is an example to dump your PostgreSQL database:
+
+```bash
+sudo -u postgres pg_dump --file=airtime.sql airtime
+```
+
+Please read the `pg_dump` usage for additional details.
+
+### Backup the storage
+
+You need to backup the entire file storage, which holds all the files of your installation.
+
+The path to your storage was defined during the installation process, the default storage path is `/srv/airtime/stor`.
+
+## Install
+
+Install LibreTime on a new system by [running the installer](./install.md#run-the-installer), and **don't run the setup tasks**.
+
+## Restore the backup
+
+Restore [the Airtime backup](../backup.md#restore) on the newly installed LibreTime server.
+
+You have to restore the **database**, the **files storage** and the **configuration files**.
+
+## Update the configuration files
+
+Update the configuration file to match the new configuration schema and update any changed values. See the [configuration](./configuration.md) documentation for more details.
+
+Edit the Icecast password in `/etc/icecast2/icecast.xml` to reflect the password used in Airtime.
+
+## Finish
+
+Restart the LibreTime services and navigate to the LibreTime web-page.