将gremlin连接到gremlin服务器时出现问题

时间：2016-06-06 05:38:30

标签： gremlin

我想连接到我的gremlin服务器，在那里我给了gremlin-server.yaml和remote.yaml和相同的主机。我的gremlin在linux服务器上。在给出：远程命令时，我得到了，

gremlin> :remote connect tinkerpop.server conf/remote-objects.yaml
05:20:38 WARN  org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler  - Exception caught during WebSocket processing - closing connection
io.netty.handler.codec.http.websocketx.WebSocketHandshakeException: Invalid handshake response getStatus: 400 Bad Request
    at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13.verify(WebSocketClientHandshaker13.java:182)
    at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker.finishHandshake(WebSocketClientHandshaker.java:202)
    at org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler.channelRead0(WebSocketClientHandler.java:73)
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
    at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:241)
    at io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:212)
    at io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:132)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
    at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:828)
    at io.netty.channel.AbstractChannel$AbstractUnsafe$5.run(AbstractChannel.java:576)
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)
05:20:38 ERROR org.apache.tinkerpop.gremlin.driver.Handler$GremlinResponseHandler  - Could not process the response - correct the problem and restart the driver.
io.netty.handler.codec.http.websocketx.WebSocketHandshakeException: Invalid handshake response getStatus: 400 Bad Request
    at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13.verify(WebSocketClientHandshaker13.java:182)
    at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker.finishHandshake(WebSocketClientHandshaker.java:202)
    at org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler.channelRead0(WebSocketClientHandler.java:73)
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
    at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:241)
    at io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:212)
    at io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:132)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
    at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:828)
    at io.netty.channel.AbstractChannel$AbstractUnsafe$5.run(AbstractChannel.java:576)
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)
==>Connected - ip-10-253-12-127.eu-west-1.compute.internal/10.253.12.127:8182
gremlin> 05:20:39 WARN  org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler  - Exception caught during WebSocket processing - closing connection
io.netty.handler.codec.http.websocketx.WebSocketHandshakeException: Invalid handshake response getStatus: 400 Bad Request
    at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13.verify(WebSocketClientHandshaker13.java:182)
    at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker.finishHandshake(WebSocketClientHandshaker.java:202)
    at org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler.channelRead0(WebSocketClientHandler.java:73)
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
    at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:241)
    at io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:212)
    at io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:132)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
    at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:828)
    at io.netty.channel.AbstractChannel$AbstractUnsafe$5.run(AbstractChannel.java:576)
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)
05:20:39 ERROR org.apache.tinkerpop.gremlin.driver.Handler$GremlinResponseHandler  - Could not process the response - correct the problem and restart the driver.
io.netty.handler.codec.http.websocketx.WebSocketHandshakeException: Invalid handshake response getStatus: 400 Bad Request
    at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13.verify(WebSocketClientHandshaker13.java:182)
    at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker.finishHandshake(WebSocketClientHandshaker.java:202)
    at org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler.channelRead0(WebSocketClientHandler.java:73)
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
    at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:241)
    at io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:212)
    at io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:132)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
    at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:828)
    at io.netty.channel.AbstractChannel$AbstractUnsafe$5.run(AbstractChannel.java:576)
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:380)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
    at java.lang.Thread.run(Thread.java:745)

这一直在继续......但只有我第一次

 ==>Connected - ip-10-253-12-127.eu-west-1.compute.internal/10.253.12.127:8182

我不知道该怎么做..它连接到gremlin-server，在我得到的webconsole中，

{"message":"no gremlin script supplied"}

这是预期的消息。但是ERROR和WARN一直无限运行。请帮帮我

3 个答案:

答案 0 :(得分：3)

你不能拥有两个＆＃34;信道器＆＃34;在你的yaml键。我有点惊讶Gremlin Server实际上没有错误地启动（我猜蛇形解析器并不认为它是无效的）。您可以使用websockets或REST运行Gremlin Server，但不能同时运行两者。要连接Gremlin控制台和:remote，您需要使用WebSocketChannelizer，我怀疑Gremlin Server正在启动时选择HttpChannelizer，因为您有两个。

顺便说一下，这条消息：

==>Connected - ip-10-253-12-127.eu-west-1.compute.internal/10.253.12.127:8182

实际上并不意味着＆＃34;已连接＆＃34;。这只是意味着配置了:remote。实际的＆＃34;连接＆＃34;在您发送第一条消息之前不会发生。在更新版本的Gremlin控制台中，该消息已被更改，以减少混乱。对不起。

请注意，我已使用默认的Titan 1.0.0发行版在localhost上对此进行了测试。已开始titan.sh：

$ bin/titan.sh start
Forking Cassandra...
Running `nodetool statusthrift`.. OK (returned exit status 0 and printed string "running").
Forking Elasticsearch...
Connecting to Elasticsearch (127.0.0.1:9300)... OK (connected to 127.0.0.1:9300).
Forking Gremlin-Server...
Connecting to Gremlin-Server (127.0.0.1:8182)... OK (connected to 127.0.0.1:8182).
Run gremlin.sh to connect.

然后开始gremlin.sh：

$ bin/gremlin.sh

         \,,,/
         (o o)
-----oOOo-(3)-oOOo-----
plugin activated: aurelius.titan
plugin activated: tinkerpop.server
plugin activated: tinkerpop.utilities
plugin activated: tinkerpop.hadoop
plugin activated: tinkerpop.tinkergraph
gremlin> :remote connect tinkerpop.server conf/remote.yaml
==>Connected - localhost/127.0.0.1:8182
gremlin> :> 1+1
==>2
gremlin>

答案 1 :(得分：1)

如果您使用的是Signature Version 4身份验证，则应该不按照https://docs.aws.amazon.com/neptune/latest/userguide/access-graph-gremlin-console.html中所述的步骤进行操作。相反，您应该点击另一个链接https://docs.aws.amazon.com/neptune/latest/userguide/iam-auth-connecting-gremlin-console.html。基本上，您必须构建netty-all jar的最新版本，并替换gremlin客户端随附的版本。

一些建议可能会为您节省几个小时：

您必须使用maven和Java 8编译项目；

@请参阅How to set specific java version to Maven 

alias mvn_java8="JAVA_HOME=/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/bin/java && mvn"

编译过程中的错误

如果您像我一样在构建项目时遇到一些问题，请尝试更新Lombok版本。就我而言，这是最好的版本：

@请参阅Caused by: java.lang.ClassNotFoundException: com.sun.tools.javac.code.TypeTags when using lombok 

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.22</version>
            <scope>provided</scope>
        </dependency>

对环境设置保持特殊的外观。例如，SERVICE_REGION与AWS_REGION或AWS_DEFAULT_REGION不同。您必须全部设置。

export AWS_DEFAULT_REGION=...
export AWS_REGION=...
export AWS_ACCESS_KEY_ID=...
export AWS_SECRET_ACCESS_KEY=...
export AWS_SESSION_TOKEN=...
export AWS_SECURITY_TOKEN=...
export SERVICE_REGION=...

检查您的Neptune遥控器

Amazon教程假定海王星的默认设置中包含许多内容。事实并非如此。查看您的Neptune设置并进行检查。

答案 2 :(得分：0)

关于AWS示例：https://docs.aws.amazon.com/neptune/latest/userguide/iam-auth-connecting-gremlin-console.html

我为此花了一个星期的时间，无法与我们的Neptune服务器建立连接，我以为我搞砸了Java部分（我不是Java专家，所以我花了过多的时间重新编译，检查依赖项等等。）。

但是，Python中的类似示例（绕过Gremlin但也使用Signature v4 Signing）开箱即用，没有问题：

https://docs.aws.amazon.com/neptune/latest/userguide/iam-auth-connecting-python.html

因此，我直觉地启动了Wireshark，并确定我发现Python方法实际上建立了TLS连接来交换密钥：

wireshark-screenshot

...但是Java示例没有。因此，我进行了一些探索，发现了一个名为 enableSsl 的remote.yaml属性，将其添加到yaml文件中就可以了（请参见AWS示例中的步骤10）：

hosts: [your-neptune-endpoint]
port: 8182
connectionPool: {
  enableSsl: true,
  channelizer: org.apache.tinkerpop.gremlin.driver.SigV4WebSocketChannelizer}
serializer: { className: org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV3d0, config: { serializeResultToString: true }}

成功:)

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