I took a full day to create cluster with elasticsearch6.1.2 for testing. After I complete config and start every node. I found some error messages in log file of every node , the error message is
"exception caught on transport layer [org.elasticsearch.transport.netty4.netty tcp channel@19d87229], closing connection java.io.ioexception: invalid string; unexpected character: 253 hex: fd"
Can any people help me?