how do i give myself auth level 2 on my server?

The available Admin roles for Rust are:

• ownerid - This grants access to all admin commands, and can add/remove other admins.
• moderatorid - This grants access to all admin commands, but cannot add/remove other admins.

You can add an Admin to your Rust server with the following steps:

1. On the server control panel, access the file manager under Files > FTP File Access
2. From here, navigate to /server/<your_server_identity>/cfg/
3. In this folder, edit the users.cfg file. If it doesn't exist, click "New file" on the side menu to create it.
4. In this file, each line is an admin user. The format is <role> <64_bit_steam_id> <reason/user>
5. Save the file and restart your server.

You can use this website to find your 64 bit Steam ID (steamID64): https://steamid.io/ 

An example of the users.cfg file can be found below:

ownerid 76561############ "PlayerNameHere"
moderatorid 76561############ "PlayerNameHere"