如何使用Cassandra和Elasticsearch的Docker来设置JanusGraph？
我试图在我的本地机器上设置JanusGraph进行开发。 我的目标是有一个类似于cassandra远程服务器模式的设置 。 作为存储后端，我想使用cassandra作为索引后端，我计划使用elasticsearch。
对于这两个，我使用的是Docker容器（cassandra：h_t_t_p_s：//hub.docker.com/_/cassandra/ [我不允许发布3个链接：/ elasticsearch]）。
我的janusgraph-server.properties文件如下所示：
gremlin.graph=org.janusgraph.core.JanusGraphFactory storage.backend=cassandra storage.hostname=127.0.0.1 storage.cassandra.astyanax.cluster-name=cassandra_test_cluster index.search.backend=elasticsearch index.search.hostname=127.0.0.1 index.search.port=9300 index.search.elasticsearch.cluster-name=elasticsearch_test_cluster
启动gremlin-server会导致这种失败：
0 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - \,,,/ (oo) -----oOOo-(3)-oOOo----- 162 [main] INFO org.apache.tinkerpop.gremlin.server.GremlinServer - Configuring Gremlin Server from conf/gremlin-server/gremlin-server.yaml 256 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics ConsoleReporter configured with report interval=180000ms 263 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics CsvReporter configured with report interval=180000ms to fileName=/tmp/gremlin-server-metrics.csv 343 [main] INFO org.apache.tinkerpop.gremlin.server.util.MetricManager - Configured Metrics JmxReporter configured with domain= and agentId= 345 [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 800 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,name=ClusterJanusGraphConnectionPool,ServiceType=connectionpool 807 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 127.0.0.1 884 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,name=KeyspaceJanusGraphConnectionPool,ServiceType=connectionpool 884 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 127.0.0.1 1070 [main] INFO org.janusgraph.graphdb.configuration.GraphDatabaseConfiguration - Generated unique-instance-id=c0a8000424833-XXX-MacBook-Pro-local1 1078 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,name=ClusterJanusGraphConnectionPool,ServiceType=connectionpool 1079 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 127.0.0.1 1082 [main] INFO com.netflix.astyanax.connectionpool.impl.ConnectionPoolMBeanManager - Registering mbean: com.netflix.MonitoredResources:type=ASTYANAX,name=KeyspaceJanusGraphConnectionPool,ServiceType=connectionpool 1082 [main] INFO com.netflix.astyanax.connectionpool.impl.CountingConnectionPoolMonitor - AddHost: 127.0.0.1 1099 [main] INFO org.janusgraph.diskstorage.Backend - Configuring index [search] 1179 [main] INFO org.elasticsearch.plugins - [General Orwell Taylor] loaded [], sites [] 1655 [main] INFO org.janusgraph.diskstorage.es.ElasticSearchIndex - Configured remote host: 127.0.0.1 : 9300 1738 [elasticsearch[General Orwell Taylor][generic][T#2]] INFO org.elasticsearch.client.transport - [General Orwell Taylor] failed to get local cluster state for [#transport#-1][XXX-MacBook-Pro.local][inet[/127.0.0.1:9300]], disconnecting... org.elasticsearch.transport.NodeDisconnectedException: [][inet[/127.0.0.1:9300]][cluster:monitor/state] disconnected 1743 [main] WARN org.apache.tinkerpop.gremlin.server.GremlinServer - Graph [graph] configured at [conf/gremlin-server/janusgraph-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.GraphManager.lambda$new$0(GraphManager.java:55) at java.util.LinkedHashMap$LinkedEntrySet.forEach(LinkedHashMap.java:671) at org.apache.tinkerpop.gremlin.server.GraphManager.<init>(GraphManager.java:53) at org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor.<init>(ServerGremlinExecutor.java:83) at org.apache.tinkerpop.gremlin.server.GremlinServer.<init>(GremlinServer.java:110) at org.apache.tinkerpop.gremlin.server.GremlinServer.main(GremlinServer.java:344) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tinkerpop.gremlin.structure.util.GraphFactory.open(GraphFactory.java:78) ... 8 more Caused by: java.lang.IllegalArgumentException: Could not instantiate implementation: org.janusgraph.diskstorage.es.ElasticSearchIndex at org.janusgraph.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:69) at org.janusgraph.diskstorage.Backend.getImplementationClass(Backend.java:477) at org.janusgraph.diskstorage.Backend.getIndexes(Backend.java:464) at org.janusgraph.diskstorage.Backend.<init>(Backend.java:149) at org.janusgraph.graphdb.configuration.GraphDatabaseConfiguration.getBackend(GraphDatabaseConfiguration.java:1850) at org.janusgraph.graphdb.database.StandardJanusGraph.<init>(StandardJanusGraph.java:134) at org.janusgraph.core.JanusGraphFactory.open(JanusGraphFactory.java:107) at org.janusgraph.core.JanusGraphFactory.open(JanusGraphFactory.java:87) ... 13 more Caused by: java.lang.reflect.InvocationTargetException 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.janusgraph.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:58) ... 20 more Caused by: org.elasticsearch.client.transport.NoNodeAvailableException: None of the configured nodes are available: [] at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:279) at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:198) at org.elasticsearch.client.transport.support.InternalTransportClusterAdminClient.execute(InternalTransportClusterAdminClient.java:86) at org.elasticsearch.client.support.AbstractClusterAdminClient.health(AbstractClusterAdminClient.java:127) at org.elasticsearch.action.admin.cluster.health.ClusterHealthRequestBuilder.doExecute(ClusterHealthRequestBuilder.java:92) at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:91) at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:65) at org.janusgraph.diskstorage.es.ElasticSearchIndex.<init>(ElasticSearchIndex.java:215) ... 25 more 1745 [main] INFO org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor - Initialized Gremlin thread pool. Threads in pool named with pattern gremlin-* 2190 [main] INFO org.apache.tinkerpop.gremlin.groovy.engine.ScriptEngines - Loaded gremlin-groovy ScriptEngine 2836 [main] WARN org.apache.tinkerpop.gremlin.groovy.engine.GremlinExecutor - Could not initialize gremlin-groovy ScriptEngine with scripts/empty-sample.groovy as script could not be evaluated - javax.script.ScriptException: groovy.lang.MissingPropertyException: No such property: graph for class: Script1
None of the configured nodes are available: []为什么？ 我能做些什么来使它们可用？
您是否validation过ElasticSearch和Cassandra是否在localhost的这些端口上运行？ 如果没有，我build议检查你是否启动你的容器转发到这些端口。
我还build议检查日志Cassandra和elasticsearch，看看是否有任何错误。