Hi Guys, Here is how you can root your galaxy S8 and S8 Plus running on android pie.
Here are the links:
Xda Link with files link:
TWRP download:
https://twrp.me/Devices/Samsung/
Magisk Manager:
https://github.com/topjohnwu/Magisk/releases/
Flashing files from USB tutorial:
https://www.youtube.com/watch?v=6m5pJSYm19I
You have any questions? Please drop a comment!