I have configured Apache Nutch 2.3.1 and crawled few websites. I have to index these documents to Solr (6.6.3) that is running in Cloud mode. When I execute solrindex command, I got following exception
2018-05-02 13:10:40,679 INFO [main] org.apache.hadoop.mapred.MapTask: Ignoring exception during close for org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector#3bd3d05e
java.io.IOException: org.apache.solr.client.solrj.SolrServerException: Server refused connection at: http://10.11.22.156:8983/solr/collection2
at org.apache.nutch.indexwriter.solr.SolrIndexWriter.close(SolrIndexWriter.java:103)
at org.apache.nutch.indexer.IndexWriters.close(IndexWriters.java:114)
at org.apache.nutch.indexer.IndexerOutputFormat$1.close(IndexerOutputFormat.java:54)
at org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.close(MapTask.java:670)
at org.apache.hadoop.mapred.MapTask.closeQuietly(MapTask.java:2019)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:797)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1754)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
Caused by: org.apache.solr.client.solrj.SolrServerException: Server refused connection at: http://10.11.22.156:8983/solr/collection2
at org.apache.solr.client.solrj.impl.HttpSolrServer.executeMethod(HttpSolrServer.java:559)
at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:210)
at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:206)
at org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:124)
at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:68)
at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:54)
at org.apache.nutch.indexwriter.solr.SolrIndexWriter.close(SolrIndexWriter.java:97)
... 11 more
Caused by: org.apache.http.conn.HttpHostConnectException: Connection to http://10.11.22.156:8983 refused
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:190)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:294)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:643)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
at org.apache.solr.client.solrj.impl.HttpSolrServer.executeMethod(HttpSolrServer.java:448)
... 17 more
Caused by: java.net.ConnectException: Connection timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:127)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180)
Where is the problem? If I repeat the same job with solr without cloud mode, it works fines.
The error straight forward showing that you have an Apache Nutch server, which is unable to access this particular node and port of Apache Solr http://10.11.22.156:8983/solr/collection2.
You need access between these two servers to make them communicate with each other :
You need to provide outbound permission to solr server to do request response with Apache Nutch server.
Also, you need to provide inbound permission to Apache Nutch server to access the given solr IP and port.
Related
Never happened before, but today I upgrade Windows preview version, and an exception occured (Connection Refused: connect).
Redis runs in a Docker container and Docker runs in WSL2 (Ubuntu 18.04), and also there are a Mongodb database and a Mysql database running in docker.
I cannot connect to Mongodb(by Java) or Redis (by Jedit) but Mysql is well (by Navicat or Java).
Then, I write a simple java program with Jedis to connect to Redis, it works failed in Windows but successful in WSL2. And I also connect to Redis with telnet command, it works successful in Windows and WSL2.
Windows Version: 10.0.20175.1000, Insider Preview, Build 20175.re_prerelease.200717-1349
Linux in WSL2: Ubuntu 18.04
Docker Version: 19.03.8
Mongodb and Redis: latest
Mysql: 5.6
Jedis: 2.7.2
Exception in thread "main" redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused: connect
at redis.clients.jedis.Connection.connect(Connection.java:155)
at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:83)
at redis.clients.jedis.Connection.sendCommand(Connection.java:94)
at redis.clients.jedis.BinaryClient.set(BinaryClient.java:100)
at redis.clients.jedis.Client.set(Client.java:29)
at redis.clients.jedis.Jedis.set(Jedis.java:65)
at com.ty.tissue.config.TissueConfig.main(TissueConfig.java:105)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at redis.clients.jedis.Connection.connect(Connection.java:149)
... 6 more
help me, thanks.
I'm trying to set up a storm cluster but am having trouble running topologies on the cluster. I can run them locally on each machine but not together. I am using the following command from the storm starter kit to try and make it work:
$ storm jar storm-starter-*.jar storm.starter.RollingTopWords production-topology remote
I am getting two different but similar errors when I run the topology on one of the supervisor machines vs the nimbus machine. I have an instance of zookeeper that my supervisor nodes should be able to connect to but clearly that is not happening. Honestly, I don't even really understand how zookeeper manages the cluster.
Error thrown in supervisor:
scix3#M5:~/apache/storm/examples/storm-starter/target$ storm jar storm-starter-0.9.4.jar storm.starter.RollingTopWords production-topology remote
Running: /usr/lib/jvm/java-1.7.0-openjdk-amd64/bin/java -client - Dstorm.options= -Dstorm.home=/home/scix3/apache/storm -Dstorm.log.dir=/home/scix3/apache/storm/logs -Djava.library.path=/usr/local/lib:/opt/local/lib:/usr/lib -Dstorm.conf.file= -cp /home/scix3/apache/storm/lib/kryo- 2.21.jar:/home/scix3/apache/storm/lib/core.incubator-0.1.0.jar:/home/scix3/apache/storm/lib/commons-fileupload-1.2.1.jar:/home/scix3/apache/storm/lib/ring-servlet- 0.3.11.jar:/home/scix3/apache/storm/lib/clj-stacktrace-0.2.2.jar:/home/scix3/apache/storm/lib/jline-2.11.jar:/home/scix3/apache/storm/lib/servlet-api-2.5.jar:/home/scix3/apache/storm/lib/disruptor-2.10.1.jar:/home/scix3/apache/storm/lib/log4j-over-slf4j-1.6.6.jar:/home/scix3/apache/storm/lib/clojure- 1.5.1.jar:/home/scix3/apache/storm/lib/commons-exec-1.1.jar:/home/scix3/apache/storm/lib/logback-core-1.0.13.jar:/home/scix3/apache/storm/lib/jetty-util-6.1.26.jar:/home/scix3/apache/storm/lib/slf4j-api-1.7.5.jar:/home/scix3/apache/storm/lib/carbonite-1.4.0.jar:/home/scix3/apache/storm/lib/compojure- 1.1.3.jar:/home/scix3/apache/storm/lib/minlog-1.2.jar:/home/scix3/apache/storm/lib/commons-lang-2.5.jar:/home/scix3/apache/storm/lib/tools.macro- 0.1.0.jar:/home/scix3/apache/storm/lib/reflectasm-1.07-shaded.jar:/home/scix3/apache/storm/lib/tools.cli-0.2.4.jar:/home/scix3/apache/storm/lib/math.numeric-tower-0.0.1.jar:/home/scix3/apache/storm/lib/logback-classic-1.0.13.jar:/home/scix3/apache/storm/lib/tools.logging-0.2.3.jar:/home/scix3/apache/storm/lib/asm-4.0.jar:/home/scix3/apache/storm/lib/jetty-6.1.26.jar:/home/scix3/apache/storm/lib/snakeyaml-1.11.jar:/home/scix3/apache/storm/lib/hiccup-0.3.6.jar:/home/scix3/apache/storm/lib/clj-time-0.4.1.jar:/home/scix3/apache/storm/lib/jgrapht-core-0.9.0.jar:/home/scix3/apache/storm/lib/clout-1.0.1.jar:/home/scix3/apache/storm/lib/chill-java-0.3.5.jar:/home/scix3/apache/storm/lib/commons-io- 2.4.jar:/home/scix3/apache/storm/lib/joda-time-2.0.jar:/home/scix3/apache/storm/lib/storm-core-0.9.4.jar:/home/scix3/apache/storm/lib/objenesis-1.2.jar:/home/scix3/apache/storm/lib/commons-logging-1.1.3.jar:/home/scix3/apache/storm/lib/ring-core-1.1.5.jar:/home/scix3/apache/storm/lib/ring-jetty-adapter-0.3.11.jar:/home/scix3/apache/storm/lib/commons-codec-1.6.jar:/home/scix3/apache/storm/lib/json-simple-1.1.jar:/home/scix3/apache/storm/lib/ring-devel-0.3.11.jar:storm-starter-0.9.4.jar:/home/scix3/apache/storm/conf:/home/scix3/apache/storm/bin - Dstorm.jar=storm-starter-0.9.4.jar storm.starter.RollingTopWords production- topology remote
200 [main] INFO storm.starter.RollingTopWords - Topology name: production- topology
Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/collect/Lists
at storm.starter.tools.Rankings.<init>(Rankings.java:33)
at storm.starter.bolt.AbstractRankerBolt.<init> (AbstractRankerBolt.java:69)
at storm.starter.bolt.AbstractRankerBolt.<init> (AbstractRankerBolt.java:56)
at storm.starter.bolt.IntermediateRankingsBolt.<init> (IntermediateRankingsBolt.java:41)
at storm.starter.RollingTopWords.wireTopology(RollingTopWords.java:68)
at storm.starter.RollingTopWords.<init>(RollingTopWords.java:52)
at storm.starter.RollingTopWords.main(RollingTopWords.java:122)
Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Lists
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 7 more
scix3#M5:~/apache/storm/examples/storm-starter/target$
Error thrown from nimbus:
scix3#M6:~/apache/storm/examples/storm-starter/targetstorm jar storm-starter-0.9.4.jar storm.starter.RollingTopWords production-topology remote
Running: java -client -Dstorm.options= -Dstorm.home=/home/scix3/apache/storm -Dstorm.log.dir=/home/scix3/apache/storm/logs - Djava.library.path=/usr/local/lib:/opt/local/lib:/usr/lib -Dstorm.conf.file= -cp /home/scix3/apache/storm/storm-starter-0.9.4-jar-with- dependencies.jar:/home/scix3/apache/storm/storm-starter-0.9.4.jar:/home/scix3/apache/storm/lib/clj-stacktrace- 0.2.2.jar:/home/scix3/apache/storm/lib/clojure-1.5.1.jar:/home/scix3/apache/storm/lib/minlog- 1.2.jar:/home/scix3/apache/storm/lib/tools.logging-0.2.3.jar:/home/scix3/apache/storm/lib/commons-codec-1.6.jar:/home/scix3/apache/storm/lib/commons-io-2.4.jar:/home/scix3/apache/storm/lib/json-simple-1.1.jar:/home/scix3/apache/storm/lib/asm-4.0.jar:/home/scix3/apache/storm/lib/commons-fileupload-1.2.1.jar:/home/scix3/apache/storm/lib/commons-lang-2.5.jar:/home/scix3/apache/storm/lib/ring-servlet-0.3.11.jar:/home/scix3/apache/storm/lib/carbonite-1.4.0.jar:/home/scix3/apache/storm/lib/jetty-util-6.1.26.jar:/home/scix3/apache/storm/lib/tools.macro-0.1.0.jar:/home/scix3/apache/storm/lib/jgrapht-core-0.9.0.jar:/home/scix3/apache/storm/lib/kryo-2.21.jar:/home/scix3/apache/storm/lib/logback-core-1.0.13.jar:/home/scix3/apache/storm/lib/ring-devel-0.3.11.jar:/home/scix3/apache/storm/lib/ring-jetty-adapter-0.3.11.jar:/home/scix3/apache/storm/lib/logback-classic-1.0.13.jar:/home/scix3/apache/storm/lib/commons-logging-1.1.3.jar:/home/scix3/apache/storm/lib/tools.cli-0.2.4.jar:/home/scix3/apache/storm/lib/reflectasm-1.07-shaded.jar:/home/scix3/apache/storm/lib/math.numeric-tower-0.0.1.jar:/home/scix3/apache/storm/lib/chill-java-0.3.5.jar:/home/scix3/apache/storm/lib/clout-1.0.1.jar:/home/scix3/apache/storm/lib/slf4j-api-1.7.5.jar:/home/scix3/apache/storm/lib/disruptor-2.10.1.jar:/home/scix3/apache/storm/lib/joda-time-2.0.jar:/home/scix3/apache/storm/lib/log4j-over-slf4j-1.6.6.jar:/home/scix3/apache/storm/lib/compojure-1.1.3.jar:/home/scix3/apache/storm/lib/hiccup-0.3.6.jar:/home/scix3/apache/storm/lib/servlet-api-2.5.jar:/home/scix3/apache/storm/lib/commons-exec-1.1.jar:/home/scix3/apache/storm/lib/core.incubator-0.1.0.jar:/home/scix3/apache/storm/lib/jetty-6.1.26.jar:/home/scix3/apache/storm/lib/storm-core-0.9.4.jar:/home/scix3/apache/storm/lib/ring-core-1.1.5.jar:/home/scix3/apache/storm/lib/objenesis-1.2.jar:/home/scix3/apache/storm/lib/jline-2.11.jar:/home/scix3/apache/storm/lib/snakeyaml-1.11.jar:/home/scix3/apache/storm/lib/clj-time-0.4.1.jar:storm-starter-0.9.4.jar:/home/scix3/.storm:/home/scix3/apache/storm/bin -Dstorm.jar=storm-starter-0.9.4.jar storm.starter.RollingTopWords production-topology remote
202 [main] INFO storm.starter.RollingTopWords - Topology name: production-topology
237 [main] INFO storm.starter.RollingTopWords - Running in remote (cluster) mode
Exception in thread "main" java.lang.RuntimeException: org.apache.thrift7.transport.TTransportException: java.net.ConnectException: Connection refused
at backtype.storm.utils.NimbusClient.getConfiguredClient(NimbusClient.java:38)
at backtype.storm.StormSubmitter.submitTopology(StormSubmitter.java:116)
at backtype.storm.StormSubmitter.submitTopology(StormSubmitter.java:70)
at storm.starter.util.StormRunner.runTopologyRemotely(StormRunner.java:45)
at storm.starter.RollingTopWords.runRemotely(RollingTopWords.java:78)
at storm.starter.RollingTopWords.main(RollingTopWords.java:129)
Caused by: org.apache.thrift7.transport.TTransportException: java.net.ConnectException: Connection refused
at org.apache.thrift7.transport.TSocket.open(TSocket.java:183)
at org.apache.thrift7.transport.TFramedTransport.open(TFramedTransport.java:81)
at backtype.storm.security.auth.SimpleTransportPlugin.connect(SimpleTransportPlugin.java:83)
at backtype.storm.security.auth.ThriftClient.<init>(ThriftClient.java:63)
at backtype.storm.utils.NimbusClient.<init>(NimbusClient.java:47)
at backtype.storm.utils.NimbusClient.<init>(NimbusClient.java:43)
at backtype.storm.utils.NimbusClient.getConfiguredClient(NimbusClient.java:36)
... 5 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at org.apache.thrift7.transport.TSocket.open(TSocket.java:178)
... 11 more
scix3#M6:~/apache/storm/examples/storm-starter/target$
Although I've come this far setting up storm and zookeeper I don't really understand how they work and why I have issues. Any tips, regarding this issue or not, are more than welcome!
I am creating a simple JDBC connection data source from Bea Weblogic console, using my mac OS X Macbook (Yosemite). Something does not work.
I'm using the following parameters:
Driver Name: oracle.jdbc.OracleDriver
URL: jdbc:oracle:thin:#anagrafe:1521:MY_SERVICE_NAME
USERNAME and PASSWORD Are right.
Trying to connect from the jDeveloper IDE, using the same parameters, everything is ok, but doing the connection from Bea WebLogic Server Administration Console 12c, running locally, I register the following connection:
<15-gen-2015 11.33.37 CET> <Error> <Console> <BEA-240003> <Administration Console encountered the following error:
java.sql.SQLRecoverableException: Errore di I/O: Invalid argument
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:816)
at oracle.jdbc.driver.PhysicalConnection.connect(PhysicalConnection.java:793)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:614)
at weblogic.jdbc.common.internal.DataSourceUtil.testConnection0(DataSourceUtil.java:340)
at weblogic.jdbc.common.internal.DataSourceUtil.access$000(DataSourceUtil.java:22)
at weblogic.jdbc.common.internal.DataSourceUtil$1.run(DataSourceUtil.java:254)
at java.security.AccessController.doPrivileged(Native Method)
at weblogic.jdbc.common.internal.DataSourceUtil.testConnection(DataSourceUtil.java:251)
at com.bea.console.utils.jdbc.JDBCUtils.testConnection(JDBCUtils.java:751)
at com.bea.console.actions.jdbc.datasources.createjdbcdatasource.CreateJDBCDataSource.testConnectionConfiguration(CreateJDBCDataSource.java:479)
[...........]
Caused by: java.net.SocketException: Invalid argument
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:152)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at oracle.net.nt.MetricsEnabledInputStream.read(TcpNTAdapter.java:759)
at oracle.net.ns.Packet.receive(Packet.java:312)
at oracle.net.ns.NSProtocolStream.negotiateConnection(NSProtocolStream.java:168)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:275)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1606)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:539)
Looks like it cannot logon... Any Idea?
Tanks a lot, Davide.
While trying to configure eclipse, tomcat to debug a maven project I am getting the following error:
Failed to connect to remote VM. Connection refused.
Connection refused
What am i doing wrong?
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:432)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at java.net.Socket.<init>(Socket.java:375)
at java.net.Socket.<init>(Socket.java:189)
at org.eclipse.jdi.internal.connect.SocketTransportService$2.run(SocketTransportService.java:136)
at java.lang.Thread.run(Thread.java:680)
This basically means eclipse can't connect to the target tomcat. This may be due to tons of reasons:
tomcat isn't started
tomcat isn't accessible over the network
the debug port is not accessible (check firewall)
tomcat isn't configured to accept debugging (it should have something like the following in the startup script -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n)
I have a cassandra cluster on 4 nodes (each running ubuntu 10.04 and cassandra 0.7.4).
All nodes are connected using a SWITCH, and each is assigned a STATIC IP ADDRESS (no DNS is involved).
The node seems to be functioning properly (status is 'Normal', all nodes are up etc).
The problem is this: nodetool works, yet it only works when the nodetool command is run on the same node. When I try to run nodetool from STATIC_IP = 192.168.0.253 on STATIC_IP = 192.168.0.4 I get the following error:
(note: machine 's3789' has the static IP of 192.168.0.253)
user#s3789:/opt/cassandra/apache-cassandra-0.7.4$ bin/nodetool -host 192.168.0.4 ring
Error connection to remote JMX agent!
java.rmi.ConnectException: Connection refused to host: 127.0.1.1; nested exception is:
java.net.ConnectException: Connection refused
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:128)
at javax.management.remote.rmi.RMIServerImpl_Stub.newClient(Unknown Source)
at javax.management.remote.rmi.RMIConnector.getConnection(RMIConnector.java:2343)
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:296)
at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:267)
at org.apache.cassandra.tools.NodeProbe.connect(NodeProbe.java:137)
at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:107)
at org.apache.cassandra.tools.NodeCmd.main(NodeCmd.java:511)
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
at java.net.Socket.connect(Socket.java:546)
at java.net.Socket.connect(Socket.java:495)
at java.net.Socket.<init>(Socket.java:392)
at java.net.Socket.<init>(Socket.java:206)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:146)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)
Any hints how to solve this?
from conf/cassandra-env.sh:
# add this if you're having trouble connecting:
# JVM_OPTS="$JVM_OPTS -Djava.rmi.server.hostname=<public name>"
#
# see
# https://blogs.oracle.com/jmxetc/entry/troubleshooting_connection_problems_in_jconsole
# for more on configuring JMX through firewalls, etc. (Short version:
# get it working with no firewall first.)
Check if you started rmiregistry before starting the server
rmiregistry &
Getting started with RMI