NoNodeAvailableException

elasticsearch版本:6.8.3
使用java客户端和es进行交互的时候,抛了如下异常:

Exception in thread "main" NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{kRDWAYuFSJmGx-tcjB0L1g}{172.16.17.10}{172.16.17.10:9300}]]
    at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:352)
    at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:248)
    at org.elasticsearch.client.transport.TransportProxyClient.execute(TransportProxyClient.java:60)
    at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:388)
    at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:403)
    at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:391)
    at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:46)
    at org.elasticsearch.action.ActionRequestBuilder.get(ActionRequestBuilder.java:53)
    at com.fc.elastic.TestElastic.main(TestElastic.java:49)

先说结果:

1先修改es server端的elasticsearch.yml配置文件

network.host: 0.0.0.0
network.bind_host: 172.16.17.10
http.cors.enabled: true
http.cors.allow-origin: "*"

bind_host是部署es服务端的机器ip.
http和tcp端口使用了默认值,9200和9300，集群名称使用了默认的集群名称

做如上修改可以解决这个异常问题。

2. 其他配置排查

• cluster.name 客户端与服务端配置是否相同
• 使用的端口是否是tcp端口,java客户端与server端交互是使用tcp端口,默认9300