[main] WARN bitronix.tm.Configuration – cannot get this JVM unique ID. Make sure it is configured and you only use ASCII characters. Will use IP address instead (unsafe for production usage!).
CentOS6.8[kernel 2.6] –> CentOS7.4[kernel 3.10]
I tried these two ways above, and that works for me, but there are other things which may cause this problem, just have a try.