elasticsearch - 泰坦(Titan):从另一台机器连接到Elasticsearch

Question

我正在将Titan 1.0.0与Elasticsearch一起使用。我让Titan(带有DynamoDB后端)在EC2机器上工作。

我的主要目标是使用Java通过另一台EC2计算机连接到该Titan实例。

不幸的是我无法连接到这台机器。

我的Titan实例是使用属性文件配置的。这是Elasticsearch配置的片段:

# elasticsearch config
index.search.backend=elasticsearch
index.search.directory=/path/to/elasticsearch
index.search.elasticsearch.interface=NODE
index.search.elasticsearch.ext.node.data=true
index.search.elasticsearch.ext.node.client=false
index.search.elasticsearch.ext.node.local=false

这将启动一个包含数据的完整节点。

现在，我想从另一台机器连接到该节点的Elasticsearch。我的配置文件是:

storage.backend= com.amazon.titan.diskstorage.dynamodb.DynamoDBStoreManager
storage.hostname=10.0.0.249
storage.port=8182

index.search.backend=elasticsearch
index.search.elasticsearch.interface=TRANSPORT_CLIENT
index.search.elasticsearch.ext.node.data=false
index.search.elasticsearch.ext.node.client=true
index.search.hostname=10.0.0.249:9200


storage.dynamodb.client.endpoint=https://dynamodb.us-east-1.amazonaws.com

## DynamoDB client configuration: credentials
storage.dynamodb.client.credentials.class-name=com.amazonaws.auth.DefaultAWSCredentialsProviderChain
storage.dynamodb.client.credentials.constructor-args=

当我尝试通过此行使用Java连接时:

graph=TitanFactory.open("conf/dynamodb_remote.properties")

我收到一条错误消息:

java.lang.IllegalArgumentException: Could not instantiate implementation: com.thinkaurelius.titan.diskstorage.es.ElasticSearchIndex
    at com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:55)
    at com.thinkaurelius.titan.diskstorage.Backend.getImplementationClass(Backend.java:473)
    at com.thinkaurelius.titan.diskstorage.Backend.getIndexes(Backend.java:460)
    at com.thinkaurelius.titan.diskstorage.Backend.<init>(Backend.java:147)
    at com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.getBackend(GraphDatabaseConfiguration.java:1805)
    at com.thinkaurelius.titan.graphdb.database.StandardTitanGraph.<init>(StandardTitanGraph.java:123)
    at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:94)
    at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:62)
    at com.thinkaurelius.titan.core.TitanFactory$open.call(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:110)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:122)
    at groovysh_evaluate.run(groovysh_evaluate:3)
    at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:215)
    at org.codehaus.groovy.tools.shell.Interpreter.evaluate(Interpreter.groovy:69)
    at org.codehaus.groovy.tools.shell.Groovysh.execute(Groovysh.groovy:185)
    at org.codehaus.groovy.tools.shell.Shell.leftShift(Shell.groovy:119)
    at org.codehaus.groovy.tools.shell.ShellRunner.work(ShellRunner.groovy:94)
    at org.codehaus.groovy.tools.shell.InteractiveShellRunner.super$2$work(InteractiveShellRunner.groovy)
    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.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207)
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:130)
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:150)
    at org.codehaus.groovy.tools.shell.InteractiveShellRunner.work(InteractiveShellRunner.groovy:123)
    at org.codehaus.groovy.tools.shell.ShellRunner.run(ShellRunner.groovy:58)
    at org.codehaus.groovy.tools.shell.InteractiveShellRunner.super$2$run(InteractiveShellRunner.groovy)
    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.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207)
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:130)
    at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:150)
    at org.codehaus.groovy.tools.shell.InteractiveShellRunner.run(InteractiveShellRunner.groovy:82)
    at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:215)
    at org.apache.tinkerpop.gremlin.console.Console.<init>(Console.groovy:144)
    at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:215)
    at org.apache.tinkerpop.gremlin.console.Console.main(Console.groovy:303)
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 com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:44)
    ... 44 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 com.thinkaurelius.titan.diskstorage.es.ElasticSearchIndex.<init>(ElasticSearchIndex.java:201)
    ... 49 more

我使用wget检查，似乎端口9200和9201正常工作，但9300无效。也许这就是问题存在的原因。

有什么帮助吗？

Answer 1

基于Titan配置documentation的一些建议

index.search.hostname应该只是主机名或IP地址。它不应包含端口。

index.search.port如果您决定指定它，则应使用9300或您的Elasticsearch值作为传输TCP端口。

index.search.elasticsearch.cluster-name应该与Elasticsearch配置中的cluster.name匹配。

更新了:这似乎对我有用。在$TITAN_HOME/conf/mytitan.properties中，我像这样配置索引后端:

storage.backend=berkeleyje
storage.directory=../db/mytitan/berkeleyje
index.search.backend=elasticsearch
index.search.index-name=mytitan
index.search.elasticsearch.interface=NODE
index.search.conf-file=mytitan-elasticsearch.yml

然后$TITAN_HOME/conf/mytitan-elasticsearch.yml看起来就像是常规的ES配置:

cluster.name: TitanElasticsearch
network.name: u1401
network.host: 192.168.14.101
discovery.zen.ping.multicast.enabled: false
discovery.zen.ping.unicast.hosts: ["192.168.14.101"]
discovery.zen.minimum_master_nodes: 1
node.name: u1401
node.master: true
node.data: true
http.port: 9200
transport.tcp.port: 9300
path.data: ./db/mytitan/elasticsearch

当我尝试使用前缀index.search.elasticsearch.ext...指定这些属性时，传输TCP端口没有像您前面提到的那样启动。