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HuskSync/docs/Legacy-Migration.md

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This guide will walk you through how to upgrade from HuskSync v1.4.x to HuskSync v3.x. Data from HuskSync v2.x will automatically be imported into HuskSync v3.x.
## Requirements
- MySQL Database with HuskSync v1.4.x data
- Migration from SQLite is not supported, as HuskSync v2.x requires a MySQL database and does not support SQLite. Apologies for the inconvenience.
- If you're running v1.3.x or older, follow the update instructions to 1.4.x first before updating to 2.x.
## Migration Instructions
### 1. Uninstall HuskSync v1.x from all servers
- Switch off all servers and your proxy
- Delete the .jar file from your `~/plugins/` folders on your Spigot servers
- Also delete the .jar file from your `~/plugins/` folders on your Proxy. HuskSync v3.x no longer requires a proxy plugin.
- Delete (or make a copy and delete) all HuskSync config data folders (`~/plugins/HuskSync/`). HuskSync v3.x has new `config.yml`, `messages-xx-xx.yml` and `server.yml` files.
### 2. Install HuskSync v3.x on all Spigot servers
- HuskSync v3.x must only be installed on your Spigot servers, not your proxy.
- Follow the setup instructions [here](Setup).
### 3. Configure the migrator
- With your servers back on and correctly configured to run HuskSync v3.x, ensure nobody is online.
- Use the console on one of your Spigot servers to enter: `husksync migrate legacy`
- Carefully read the migration configuration instructions. In most cases, you won't have to change the settings, but if you do need to adjust them, use `husksync migrate legacy set <setting> <value>`.
- Migration will be carried out *from* the database you specify with the settings in console *to* the database configured in `config.yml`. If you're migrating from multiple clusters, ensure you run the migrator on the correct servers corresponding to the migrator.
### 4. Start the migrator
- Run `husksync migrate legacy start` to begin the migration process. This may take some time, depending on the amount of data you're migrating.
### 5. Ensure the migration was successful
- HuskSync will notify in console when migration is complete. Verify that the migration went OK by logging in and using the `/userdata list <username>` command to see if the data was imported with the `legacy migration` saveCause.
- You can delete the old tables in the database if you want. Be careful to make sure you delete the right ones. By default the *new* table names are `husksync_users` and `husksync_user_data` and the *old* ones were `husksync_players` and `husksync_data`, but you may have changed these.