It's 6 simple steps:
- Download the cPanel Redis Plugin installer from your Client Area (under Services -> My Services -> Details -> Downloads)
- Upload the redis.unixy.net-x.x.x-ely.tar.zip anywhere on your server (x corresponds to the version number and y to your platform's)
- Unpack the file: tar -xzf redis.unixy.net-x.x.x-ely.tar.zip
- cd redis.unixy.net-x.x.x-ely
- Create a file called unixyredis.license and enter your license key there
- Run: python installredis