My logger has been intermittent ever since my upgrade to the latest version. I followed the wiki instructions and all is well up to this point:
Check the logger database
1. Is data making it to the service_status and raw_logs tables (choose the current date)?
logmysql zimbra_logger
select * from service_status;
select * from raw_logs where log_date >= curdate();

Both of these queries come up empty but the wiki doesn't say what to do about it.
My /var/log/zimbra.log file is also zero length.

Is there a log file I can check to discover what is making the logger fail?