The IIS 7 connector should work for 8. We've had previous discussions on getting it to work, though (one such thread, Is IIS 8 supported yet? If not, is there a way to make it work?). We're working on making it more reliable out of the box.
The keys to getting it to work reliably seem to be:
- Enable all fields to log to the IIS log (there seems to be some minimal set, but due to some issue with how IIS logs turning them all on is most reliable)
- Configure to monitor the specific directory where your IIS logs are, paying attention to the rotation settings and matching them up from IIS to LEM connector
- You may have to either restart the connector or wait for the first log rotation (commonly the next day, maybe on UTC time) for it to properly pick up logs (some people report it Just Works, some people have to do the restart/wait)