Issue
[2019-05-30T22:41:49,865][INFO ][o.e.c.c.JoinHelper ] [elasticsearch-03] failed to join {master}{2eBgVAENQPasypfXsl6qkA}{jwZVwnQURiG5p9C1SqSWjQ}{192.168.138.130}{192.168.138.130:9300}{ml.machine_memory=1021906944, rack=r1, ml.max_open_jobs=20, xpack.installed=true} with JoinRequest{sourceNode={elasticsearch-03}{2eBgVAENQPasypfXsl6qkA}{p5ReKl4tTWmbe9yaL8EAdg}{192.168.138.128}{192.168.138.128:9300}{ml.machine_memory=1021906944, xpack.installed=true, ml.max_open_jobs=20}, optionalJoin=Optional[Join{term=13, lastAcceptedTerm=9, lastAcceptedVersion=39, sourceNode={elasticsearch-03}{2eBgVAENQPasypfXsl6qkA}{p5ReKl4tTWmbe9yaL8EAdg}{192.168.138.128}{192.168.138.128:9300}{ml.machine_memory=1021906944, xpack.installed=true, ml.max_open_jobs=20}, targetNode={master}{2eBgVAENQPasypfXsl6qkA}{jwZVwnQURiG5p9C1SqSWjQ}{192.168.138.130}{192.168.138.130:9300}{ml.machine_memory=1021906944, rack=r1, ml.max_open_jobs=20, xpack.installed=true}}]}
org.elasticsearch.transport.RemoteTransportException: [master][192.168.138.130:9300][internal:cluster/coordination/join]
Caused by: java.lang.IllegalStateException: failure when sending a validation request to node
at org.elasticsearch.cluster.coordination.Coordinator$3.onFailure(Coordinator.java:500) ~[elasticsearch-7.1.0.jar:7.1.0]
at org.elasticsearch.cluster.coordination.JoinHelper$5.handleException(JoinHelper.java:359) ~[elasticsearch-7.1.0.jar:7.1.0]
at org.elasticsearch.transport.TransportService$ContextRestoreResponseHandler.handleException(TransportService.java:1124) ~[elasticsearch-7.1.0.jar:7.1.0]
at org.elasticsearch.transport.TcpTransport.lambda$handleException$24(TcpTransport.java:1001) ~[elasticsearch-7.1.0.jar:7.1.0]
at org.elasticsearch.transport.TcpTransport$$Lambda$3203/948268939.run(Unknown Source) ~[?:?]
at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:681) ~[elasticsearch-7.1.0.jar:7.1.0]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[?:1.8.0_11]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ~[?:1.8.0_11]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_11]
Answer
Cause: The slave node cannot join the master node
Solution: delete the data folder
path.data: /usr/local/elasticsearch/data/data
rm -rf /usr/local/elasticsearch/data/data
