问题描述
我正在使用 JanusGraph 0.2.1 ，并将Cassandra作为后端，并使用 Elasticsearch 6.1 （具有单独的ES集群，并且JanusGraph通过http rest连接到它）。使用Elasticsearch X-Pack security，我可以在Elastic Search端启用身份验证。但是我无法在JanusGraph配置yaml上配置elasticsearch凭据。
在/ var / janusgraph / conf / gremlin-server / 文件夹中的 janusgraph-cassandra-es-server.properties文件中，我添加了以下配置：
index.search.elasticsearch.client-only: true
index.search.elasticsearch.interface: REST_CLIENT
index.search.elasticsearch.ext.shield.user: <username>:<password>
我已按照this link进行上述指定的配置。
启动JanusGraph时，出现以下错误：
enter SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/var/janusgraph-0.2.0-hadoop2/lib/slf4j-log4j12-1.7.12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/var/janusgraph-0.2.0-hadoop2/lib/logback-classic-1.1.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
0 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer -
\,/
(o o)
-----oOOo-(3)-oOOo-----
95 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - Configuring Gremlin Server from conf/gremlin-server/gremlin-server.yaml
156 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics ConsoleReporter configured with report interval=180000ms
158 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics CsvReporter configured with report interval=180000ms to fileName=/tmp/gremlin-server-metrics.csv
197 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics JmxReporter configured with domain= and agentId=
199 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics Slf4jReporter configured with interval=180000ms and loggerName=org.apache.tinkerpop.gremlin.server.Settings$Slf4jReporterMetrics
550 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,name=ClusterJanusGraphConnectionPool,ServiceType=connectionpool
559 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: janusgraph-1675467593-cassandra
623 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,name=KeyspaceJanusGraphConnectionPool,ServiceType=connectionpool
623 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: janusgraph-1675467593-cassandra
641 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 10.10.18.47
641 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - RemoveHost: janusgraph-1675467593-cassandra
898 [main] INFO org.janusgraph.core.util.ReflectiveConfigOptionLoader - Loaded and initialized config classes: 13 OK out of 13 attempts in PT0.194S
964 [main] INFO org.reflections.Reflections - Reflections took 40 ms to scan 2 urls,producing 0 keys and 0 values
1034 [main] INFO org.janusgraph.graphdb.configuration.GraphDatabaseConfiguration - Generated unique-instance-id=0a021b061-janusgraph-1675467593-5f598b9b4f-jqtz81
1040 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,ServiceType=connectionpool
1040 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: janusgraph-1675467593-cassandra
1043 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,ServiceType=connectionpool
1043 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: janusgraph-1675467593-cassandra
1050 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 10.10.18.47
1050 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - RemoveHost: janusgraph-1675467593-cassandra
1060 [main] INFO org.janusgraph.diskstorage.Backend - Configuring index [search]
1381 [main] WARN org.janusgraph.diskstorage.es.rest.RestElasticSearchClient - Unable to determine Elasticsearch server version. Default to FIVE.
org.elasticsearch.client.ResponseException: GET http://janusgraph-1675467593-elasticsearch-client:9200/: HTTP/1.1 401 Unauthorized
{"error":{"root_cause":[{"type":"security_exception","reason":"missing authentication token for REST request [/]","header":{"WWW-Authenticate":"Basic realm=\"security\" charset=\"UTF-8\""}}],"type":"security_exception","header":{"WWW-Authenticate":"Basic realm=\"security\" charset=\"UTF-8\""}},"status":401}
at org.elasticsearch.client.RestClient$1.completed(RestClient.java:354)
at org.elasticsearch.client.RestClient$1.completed(RestClient.java:343)
at org.apache.http.concurrent.BasicFuture.completed(BasicFuture.java:119)
at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.responseCompleted(DefaultClientExchangeHandlerImpl.java:177)
at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.processResponse(HttpAsyncRequestExecutor.java:436)
at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.inputReady(HttpAsyncRequestExecutor.java:326)
at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:265)
at org.apache.http.impl.nio.client.InternalIOdispatch.onInputReady(InternalIOdispatch.java:81)
at org.apache.http.impl.nio.client.InternalIOdispatch.onInputReady(InternalIOdispatch.java:39)
at org.apache.http.impl.nio.reactor.AbstractIOdispatch.inputReady(AbstractIOdispatch.java:114)
at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:162)
at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:337)
at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:276)
at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:588)
at java.lang.Thread.run(Thread.java:748)
1390 [main] WARN org.apache.tinkerpop.gremlin.server.GremlinServer - Graph [graph] configured at [conf/gremlin-server/janusgraph-cassandra-es-server.properties] Could not be instantiated and will not be available in Gremlin Server. GraphFactory message: GraphFactory Could not instantiate this Graph implementation [class org.janusgraph.core.JanusGraphFactory]
java.lang.RuntimeException: GraphFactory Could not instantiate this Graph implementation [class org.janusgraph.core.JanusGraphFactory]
at org.apache.tinkerpop.gremlin.structure.util.GraphFactory.open(GraphFactory.java:82)
at org.apache.tinkerpop.gremlin.structure.util.GraphFactory.open(GraphFactory.java:70)
at org.apache.tinkerpop.gremlin.structure.util.GraphFactory.open(GraphFactory.java:104)
at org.apache.tinkerpop.gremlin.server.util.DefaultGraphManager.lambda$new$0(DefaultGraphManager.java:57)
at java.util.LinkedHashMap$LinkedEntrySet.forEach(LinkedHashMap.java:671)
at org.apache.tinkerpop.gremlin.server.util.DefaultGraphManager.<init>(DefaultGraphManager.java:55)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor.<init>(ServerGremlinExecutor.java:110)
at org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor.<init>(ServerGremlinExecutor.java:89)
at org.apache.tinkerpop.gremlin.server.GremlinServer.<init>(GremlinServer.java:110)
at org.apache.tinkerpop.gremlin.server.GremlinServer.main(GremlinServer.java:354)
Caused by: java.lang.reflect.InvocationTargetException
如您所见， JanusGraph在启动时尝试通过检查集群运行状况来检查与弹性搜索客户端的连接，但是由于Janusgraph无法将身份验证标头添加到ES集群状态请求中，因此它被阻止了
。请让我知道如何解决它。 （我正在寻找不包含JanusGraph升级的解决方案）
谢谢。
解决方法
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