The Endeca Application Controller log is located in %ENDECA_CONF%\logs (on Windows) or $ENDECA_CONF/logs (on UNIX).

The EAC log has a default size limit of 1G. The log is named main.rotation number.log and is part of a two-log rotation that rolls automatically when the maximum size is reached. When the second log file reaches the maximum size, the first is overwritten. That is, when main.0.log reaches the 1G size limit, the system starts to write to main.1.log. Once main.1.log reaches the 1G size limit, main.0.log is overwritten.