The credentials are your keypair you specified at AWS EB’s configuration, and the EC2’s Public IP.
Maybe this will help (if you’re coming in from a Windows machine): Connecting to Your Linux Instance from Windows Using PuTTY
If you’re not coming in from a Windows machine there are guides out there for sure. AWS’s documentation isn’t so easy to find or so clear (at least to a noob like me) so I had to use several to figure this out.
In general you’re going to need the keypair file you specified (and downloaded for safekeeping hopefully). That’s your credentials, and for Windows they’ve got to be translated from *.pem to *.pkk for PuTTY to read. And you’ll need to go to your EC2 Instance panel and copy the Public IP to get in as “ec2-user@YourEC2PublicIP” and take it from there.
Tested it out myself just now for the very first time on my AWS EB EC2 Metabase environment and I got in no problem in under a minute!
And if you figure out how to clear the logs from there kindly post how you did it! Maybe somebody out there has an easier way but I kind of figure this is the direct route.