Configuring and Using GemFire XD Log Files
By default GemFire XD creates a log file named gfxdserver.log in the current directory when you start a server programmatically or using the gfxd utility. GemFire XD creates a log file named gfxdlocator.log in the current working directory when you start a locator.
You can specify the name and location of the log file by using the JDBC boot property log-file when you start a server or locator. For example:
gfxd server start -log-file=/home/user1/log/mygfxdlog.log