Elasticsearch 5 Java客户端提供"NoNodeAvailableException"

Question

我正在使用Elasticsearch 5.2和Spring Boot 1.5.1.我通过Spring应用程序中的Java客户端连接到它.当我在端口上连接它9300或9200我得到NoNodeAvailableException: None of the configured nodes are available.在我的Java客户端中,我将client.transport.sniff属性设置为true.在端口9200上通过cURL向它发送请求时,它正常工作.我在一个集群中有4个节点,我无法连接到任何节点.我的配置文件具有network除法中的所有默认值,除了network.host它具有eth0 inet addr值.

我正在使用Gradle.我的依赖是:

compile('org.springframework.boot:spring-boot-starter-web')
compile('org.elasticsearch:elasticsearch:5.2.0')
compile('org.elasticsearch.client:transport:5.2.0')
compile('org.apache.logging.log4j:log4j-api:2.7')
compile('org.apache.logging.log4j:log4j-core:2.7')

我的连接到Elasticsearch集群的代码:

@Bean
public TransportClient elasticClient() {
    org.elasticsearch.common.settings.Settings settings = Settings.builder()
        .put("client.transport.sniff", true)
        .put("cluster.name", "TestCluster")
            .build();
    TransportClient client = null;
    try {
        client = new org.elasticsearch.transport.client.PreBuiltTransportClient(settings)
            .addTransportAddress(new org.elasticsearch.common.transport.InetSocketTransportAddress(
                InetAddress.getByName("54.175.155.56"), 9200));
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }
    return client;
}

ES启动时的ES日志是:

[2017-02-15T10:37:40,664][INFO ][o.e.t.TransportService   ] [ip-10-0-29-2] publish_address {10.0.29.2:9300}, bound_addresses {10.0.29.2:9300}
[2017-02-15T10:37:40,669][INFO ][o.e.b.BootstrapChecks    ] [ip-10-0-29-2] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
[2017-02-15T10:37:43,856][INFO ][o.e.c.s.ClusterService   ] [ip-10-0-29-2] detected_master {kafka-stage}{sTIeF8gGTNam0oNW8dkbbA}{TTX6FIRtRp-gDemYY-22Sg}{10.0.20.71}{10.0.20.71:9300}, added {{kafka-stage-2}{jl3oLGgMQ1yxhdMMy65k_g}{ibV8BApjRByUOpDDncddyQ}{10.0.51.31}{10.0.51.31:9300},{ip-10-0-40-144}{t-_THs3wQbC_k9eivDo5eQ}{v-UYoYgXQ265QkdYhtiPYA}{10.0.40.144}{10.0.40.144:9300},{kafka-stage}{sTIeF8gGTNam0oNW8dkbbA}{TTX6FIRtRp-gDemYY-22Sg}{10.0.20.71}{10.0.20.71:9300},}, reason: zen-disco-receive(from master [master {kafka-stage}{sTIeF8gGTNam0oNW8dkbbA}{TTX6FIRtRp-gDemYY-22Sg}{10.0.20.71}{10.0.20.71:9300} committed version [98]])
[2017-02-15T10:37:44,009][INFO ][o.e.h.HttpServer         ] [ip-10-0-29-2] publish_address {10.0.29.2:9200}, bound_addresses {10.0.29.2:9200}
[2017-02-15T10:37:44,009][INFO ][o.e.n.Node               ] [ip-10-0-29-2] started

这些问题的答案并没有解决我的问题:

1. Java ElasticSearch没有配置的节点可用
2. Elasticsearch - NoNodeAvailableException
3. Elasticsearch NoNodeAvailableException问题

Answer 1

在您的elasticsearch.yml配置文件中，您需要确保绑定到正确的主机并具有以下设置：

network.host: 54.175.155.56

同样在Java代码中，由于您正在使用传输客户端，因此需要使用端口9300（用于TCP通信）而不是9200，这是用于HTTP通信（例如，通过curl）的端口

    client = new org.elasticsearch.transport.client.PreBuiltTransportClient(settings)
        .addTransportAddress(new org.elasticsearch.common.transport.InetSocketTransportAddress(
            InetAddress.getByName("54.175.155.56"), 9300));
                                                     ^
                                                     |
                                                change this

Answer 2

我连接的节点只是一个主节点。它有node.ingest和node.dataas false。node.ingest在连接到具有as 的节点true并删除client.transport.sniffJava 客户端中的设置时，我能够连接到 ES 集群。