Не удалось подключиться к любому адресу из IP-поиска

Question

Я новичок в Apache Ignite и пытаюсь запустить Java клиента для кластера Apache Ignite ( GridGain 6.7.12 ) Вот мои конфигурации кластера, работающие на трех Windows серверах 2019 узлов:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">
  <bean class="org.apache.ignite.configuration.IgniteConfiguration">
    <property name="discoverySpi">
      <bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
        <property name="ipFinder">
          <bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">
            <property name="addresses">
              <list>              
                <value>HOST1</value>
                <value>HOST2</value>
                <value>HOST3</value>
              </list>
            </property>
          </bean>
        </property>
      </bean>
    </property>

    <property name="cacheConfiguration">
      <bean class="org.apache.ignite.configuration.CacheConfiguration">
        <!-- Set the cache name. -->
        <property name="name" value="MyCache"/>
        <!-- Set the cache mode. -->
        <property name="cacheMode" value="PARTITIONED"/>
        <!-- Other cache parameters. -->
      </bean>
    </property>
  </bean>
</beans>

Здесь моя клиентская часть Java код:

CacheConfiguration<Integer, Person1> ccfg = new CacheConfiguration<>();
ccfg.setName("PersonCache");
ccfg.setExpiryPolicyFactory(CreatedExpiryPolicy.factoryOf(Duration.TEN_MINUTES));
ccfg.setCacheMode(CacheMode.REPLICATED);
// Registering indexed type.
ccfg.setIndexedTypes(Integer.class, Person1.class);

try (Ignite ignite = Ignition.start("ABSOLUTE_PATH_TO_MY_XML_CONFIGURATION")) {
    ignite.configuration().setClientMode(true);
    ignite.addCacheConfiguration(ccfg);
}

Когда я запускаю свой класс, я получаю следующую ошибку:

Не удалось подключиться к любому адресу из IP-искателя (убедитесь, что адреса IP-искателя правильные и брандмауэры отключены на всех хостах машины): [HOST1 / 192.168.30.05: 47503, HOST2 / 192.168.30.06: 47503, HOST3 / 192.168.30.07: 47503]

Вот журнал из моего клиентского кода, с которого я запускаю intelliJ:

[10:10:38]    __________  ________________ 
[10:10:38]   /  _/ ___/ |/ /  _/_  __/ __/ 
[10:10:38]  _/ // (7 7    // /  / / / _/   
[10:10:38] /___/\___/_/|_/___/ /_/ /___/  
[10:10:38] 
[10:10:38] ver. 8.7.12#20200211-sha1:e7932313
[10:10:38] 2020 Copyright(C) GridGain Systems, Inc. and Contributors
[10:10:38] 
[10:10:38] Ignite documentation: http://gridgain.com
[10:10:38] 
[10:10:38] Quiet mode.
[10:10:38]   ^-- Logging to file 'C:\Work\Java\GridGain\gridgain-community-8.7.12\work\log\ignite-8bc601d1.log'
[10:10:38]   ^-- Logging by 'Log4JLogger [quiet=true, config=/C:/Work/Java/GridGain/gridgain-community-8.7.12/config/ignite-log4j.xml]'
[10:10:38]   ^-- To see **FULL** console log here add -DIGNITE_QUIET=false or "-v" to ignite.{sh|bat}
[10:10:38] 
[10:10:38] OS: Windows 10 10.0 amd64
[10:10:38] VM information: Java(TM) SE Runtime Environment 1.8.0_191-b12 Oracle Corporation Java HotSpot(TM) 64-Bit Server VM 25.191-b12
[10:10:38] Please set system property '-Djava.net.preferIPv4Stack=true' to avoid possible problems in mixed environments.
[10:10:38] Initial heap size is 256MB (should be no less than 512MB, use -Xms512m -Xmx512m).
[10:10:38] Configured plugins:
[10:10:38]   ^-- ml-inference-plugin 1.0.0
[10:10:38]   ^-- Copyright 2019 GridGain Systems, Inc. and Contributors.
[10:10:38] 
[10:10:38] Configured failure handler: [hnd=StopNodeOrHaltFailureHandler [tryStop=false, timeout=0, super=AbstractFailureHandler [ignoredFailureTypes=UnmodifiableSet [SYSTEM_WORKER_BLOCKED, SYSTEM_CRITICAL_OPERATION_TIMEOUT]]]]
[10:10:39] Message queue limit is set to 0 which may lead to potential OOMEs when running cache operations in FULL_ASYNC or PRIMARY_SYNC modes due to message queues growth on sender and receiver sides.
[10:10:39] Security status [authentication=off, tls/ssl=off]
[2020-02-26 10:10:53,772][ERROR][grid-nio-worker-tcp-comm-0-#24][TcpCommunicationSpi] Failed to process selector key [ses=GridSelectorNioSessionImpl [worker=DirectNioClientWorker [super=AbstractNioClientWorker [idx=0, bytesRcvd=42, bytesSent=18, bytesRcvd0=42, bytesSent0=18, select=true, super=GridWorker [name=grid-nio-worker-tcp-comm-0, igniteInstanceName=null, finished=false, heartbeatTs=1582733452265, hashCode=270755575, interrupted=false, runner=grid-nio-worker-tcp-comm-0-#24]]], writeBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], readBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], inRecovery=null, outRecovery=null, outboundMessagesQueueSizeMetric=o.a.i.i.processors.metric.impl.AtomicLongMetric@69a257d1, super=GridNioSessionImpl [locAddr=/192.168.31.110:47101, rmtAddr=/192.168.30.5:55160, createTime=1582733452265, closeTime=0, bytesSent=18, bytesRcvd=42, bytesSent0=18, bytesRcvd0=42, sndSchedTime=1582733452265, lastSndTime=1582733452265, lastRcvTime=1582733452265, readsPaused=false, filterChain=FilterChain[filters=[GridNioTracerFilter [tracer=GridProcessorAdapter []], GridNioCodecFilter [parser=o.a.i.i.util.nio.GridDirectParser@f70a112, directMode=true], GridConnectionBytesVerifyFilter], accepted=true, markedForClose=false]]]
java.io.IOException: An existing connection was forcibly closed by the remote host
  at sun.nio.ch.SocketDispatcher.read0(Native Method)
  at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
  at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
  at sun.nio.ch.IOUtil.read(IOUtil.java:192)
  at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
  at org.apache.ignite.internal.util.nio.GridNioServer$DirectNioClientWorker.processRead(GridNioServer.java:1332)
  at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.processSelectedKeysOptimized(GridNioServer.java:2472)
  at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2239)
  at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1880)
  at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:119)
  at java.lang.Thread.run(Thread.java:748)
[2020-02-26 10:10:54,780][ERROR][grid-nio-worker-tcp-comm-1-#25][TcpCommunicationSpi] Failed to process selector key [ses=GridSelectorNioSessionImpl [worker=DirectNioClientWorker [super=AbstractNioClientWorker [idx=1, bytesRcvd=42, bytesSent=18, bytesRcvd0=42, bytesSent0=18, select=true, super=GridWorker [name=grid-nio-worker-tcp-comm-1, igniteInstanceName=null, finished=false, heartbeatTs=1582733452776, hashCode=1994088511, interrupted=false, runner=grid-nio-worker-tcp-comm-1-#25]]], writeBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], readBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], inRecovery=null, outRecovery=null, outboundMessagesQueueSizeMetric=o.a.i.i.processors.metric.impl.AtomicLongMetric@69a257d1, super=GridNioSessionImpl [locAddr=/192.168.31.110:47101, rmtAddr=/192.168.30.5:55162, createTime=1582733452776, closeTime=0, bytesSent=18, bytesRcvd=42, bytesSent0=18, bytesRcvd0=42, sndSchedTime=1582733452776, lastSndTime=1582733452776, lastRcvTime=1582733452776, readsPaused=false, filterChain=FilterChain[filters=[GridNioTracerFilter [tracer=GridProcessorAdapter []], GridNioCodecFilter [parser=o.a.i.i.util.nio.GridDirectParser@f70a112, directMode=true], GridConnectionBytesVerifyFilter], accepted=true, markedForClose=false]]]
java.io.IOException: An existing connection was forcibly closed by the remote host
  at sun.nio.ch.SocketDispatcher.read0(Native Method)
  at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
  at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
  at sun.nio.ch.IOUtil.read(IOUtil.java:192)
  at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
  at org.apache.ignite.internal.util.nio.GridNioServer$DirectNioClientWorker.processRead(GridNioServer.java:1332)
  at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.processSelectedKeysOptimized(GridNioServer.java:2472)
  at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2239)
  at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1880)
  at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:119)
  at java.lang.Thread.run(Thread.java:748)
[10:10:55] Performance suggestions for grid  (fix if possible)
[10:10:55] To disable, set -DIGNITE_PERFORMANCE_SUGGESTIONS_DISABLED=true
[10:10:55]   ^-- Enable G1 Garbage Collector (add '-XX:+UseG1GC' to JVM options)
[10:10:55]   ^-- Specify JVM heap max size (add '-Xmx<size>[g|G|m|M|k|K]' to JVM options)
[10:10:55]   ^-- Set max direct memory size if getting 'OOME: Direct buffer memory' (add '-XX:MaxDirectMemorySize=<size>[g|G|m|M|k|K]' to JVM options)
[10:10:55]   ^-- Disable processing of calls to System.gc() (add '-XX:+DisableExplicitGC' to JVM options)
[10:10:55] Refer to this page for more performance suggestions: https://apacheignite.readme.io/docs/jvm-and-system-tuning
[10:10:55] 
[10:10:55] To start Console Management & Monitoring run ignitevisorcmd.{sh|bat}
[10:10:55] 
[10:10:55] Ignite node started OK (id=8bc601d1)
[10:10:55] Topology snapshot [ver=55, locNode=8bc601d1, servers=3, clients=2, state=ACTIVE, CPUs=14, offheap=4.8GB, heap=7.5GB]

Вот журнал с одного из моих узлов сервера:

[10:10:47,368][WARNING][disco-event-worker-#38][GridDiscoveryManager] Local java version is different from remote [loc=11, rmt=8]
[10:10:47,369][INFO][disco-event-worker-#38][GridDiscoveryManager] Added new node to topology: TcpDiscoveryNode [id=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, consistentId=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, addrs=ArrayList [0:0:0:0:0:0:0:1, 192.168.31.110, 127.0.0.1], sockAddrs=HashSet [workstation@domain.com/192.168.31.110:0, /0:0:0:0:0:0:0:1:0, /127.0.0.1:0], discPort=0, order=55, intOrder=30, lastExchangeTime=1582733447345, loc=false, ver=8.7.12#20200211-sha1:e7932313, isClient=true]
[10:10:47,370][INFO][disco-event-worker-#38][GridDiscoveryManager] Topology snapshot [ver=55, locNode=3f133d52, servers=3, clients=2, state=ACTIVE, CPUs=14, offheap=4.8GB, heap=7.5GB]
[10:10:47,374][INFO][exchange-worker-#40][time] Started exchange init [topVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], crd=true, evt=NODE_JOINED, evtNode=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, customEvt=null, allowMerge=true]
[10:10:47,375][INFO][exchange-worker-#40][GridDhtPartitionsExchangeFuture] Finish exchange future [startVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], resVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], err=null]
[10:10:47,375][INFO][exchange-worker-#40][GridDhtPartitionsExchangeFuture] Completed partition exchange [localNode=3f133d52-f007-461b-9e95-0365b2ae12dd, exchange=GridDhtPartitionsExchangeFuture [topVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], evt=NODE_JOINED, evtNode=TcpDiscoveryNode [id=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, consistentId=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, addrs=ArrayList [0:0:0:0:0:0:0:1, 192.168.31.110, 127.0.0.1], sockAddrs=HashSet [workstation@domain.com/192.168.31.110:0, /0:0:0:0:0:0:0:1:0, /127.0.0.1:0], discPort=0, order=55, intOrder=30, lastExchangeTime=1582733447345, loc=false, ver=8.7.12#20200211-sha1:e7932313, isClient=true], done=true, newCrdFut=null], topVer=AffinityTopologyVersion [topVer=55, minorTopVer=0]]
[10:10:47,375][INFO][exchange-worker-#40][GridDhtPartitionsExchangeFuture] Exchange timings [startVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], resVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], stage="Waiting in exchange queue" (3 ms), stage="Exchange parameters initialization" (0 ms), stage="Determine exchange type" (0 ms), stage="Exchange done" (0 ms), stage="Total time" (3 ms)]
[10:10:47,375][INFO][exchange-worker-#40][GridDhtPartitionsExchangeFuture] Exchange longest local stages [startVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], resVer=AffinityTopologyVersion [topVer=55, minorTopVer=0]]
[10:10:47,376][INFO][exchange-worker-#40][time] Finished exchange init [topVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], crd=true]
[10:10:47,377][INFO][exchange-worker-#40][GridCachePartitionExchangeManager] Skipping rebalancing (nothing scheduled) [top=AffinityTopologyVersion [topVer=55, minorTopVer=0], force=false, evt=NODE_JOINED, node=8bc601d1-19a0-451f-a2d2-bacd56ca49d8]
[10:10:55,254][INFO][grid-nio-worker-tcp-comm-1-#25][TcpCommunicationSpi] Established outgoing communication connection [locAddr=/192.168.30.05:55163, rmtAddr=workstation@domain.com/192.168.31.110:47101]
[10:10:55,255][INFO][rest-#65][TcpCommunicationSpi] TCP client created [client=GridTcpNioCommunicationClient [ses=GridSelectorNioSessionImpl [worker=DirectNioClientWorker [super=AbstractNioClientWorker [idx=1, bytesRcvd=766677, bytesSent=234131, bytesRcvd0=0, bytesSent0=0, select=true, super=GridWorker [name=grid-nio-worker-tcp-comm-1, igniteInstanceName=null, finished=false, heartbeatTs=1582733455246, hashCode=1421332065, interrupted=false, runner=grid-nio-worker-tcp-comm-1-#25]]], writeBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], readBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], inRecovery=GridNioRecoveryDescriptor [acked=0, resendCnt=0, rcvCnt=0, sentCnt=0, reserved=true, lastAck=0, nodeLeft=false, node=TcpDiscoveryNode [id=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, consistentId=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, addrs=ArrayList [0:0:0:0:0:0:0:1, 192.168.31.110, 127.0.0.1], sockAddrs=HashSet [workstation@domain.com/192.168.31.110:0, /0:0:0:0:0:0:0:1:0, /127.0.0.1:0], discPort=0, order=55, intOrder=30, lastExchangeTime=1582733447345, loc=false, ver=8.7.12#20200211-sha1:e7932313, isClient=true], connected=false, connectCnt=3, queueLimit=4096, reserveCnt=3, pairedConnections=false], outRecovery=GridNioRecoveryDescriptor [acked=0, resendCnt=0, rcvCnt=0, sentCnt=0, reserved=true, lastAck=0, nodeLeft=false, node=TcpDiscoveryNode [id=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, consistentId=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, addrs=ArrayList [0:0:0:0:0:0:0:1, 192.168.31.110, 127.0.0.1], sockAddrs=HashSet [workstation@domain.com/192.168.31.110:0, /0:0:0:0:0:0:0:1:0, /127.0.0.1:0], discPort=0, order=55, intOrder=30, lastExchangeTime=1582733447345, loc=false, ver=8.7.12#20200211-sha1:e7932313, isClient=true], connected=false, connectCnt=3, queueLimit=4096, reserveCnt=3, pairedConnections=false], outboundMessagesQueueSizeMetric=org.apache.ignite.internal.processors.metric.impl.AtomicLongMetric@69a257d1, super=GridNioSessionImpl [locAddr=/192.168.30.05:55163, rmtAddr=workstation@domain.com/192.168.31.110:47101, createTime=1582733455246, closeTime=0, bytesSent=0, bytesRcvd=0, bytesSent0=0, bytesRcvd0=0, sndSchedTime=1582733455246, lastSndTime=1582733455246, lastRcvTime=1582733455246, readsPaused=false, filterChain=FilterChain[filters=[GridNioTracerFilter [tracer=GridProcessorAdapter []], GridNioCodecFilter [parser=org.apache.ignite.internal.util.nio.GridDirectParser@16028c5a, directMode=true], GridConnectionBytesVerifyFilter], accepted=false, markedForClose=false]], super=GridAbstractCommunicationClient [lastUsed=1582733455246, closed=false, connIdx=0]], duration=3030ms]
[10:10:55,315][INFO][grid-nio-worker-tcp-comm-2-#26][TcpCommunicationSpi] Established outgoing communication connection [locAddr=/192.168.30.05:55165, rmtAddr=workstation@domain.com/192.168.31.110:47101]
[10:10:55,746][INFO][sys-#7681][GridCachePartitionExchangeManager] Fast replied to single message [exchId=GridDhtPartitionExchangeId [topVer=AffinityTopologyVersion [topVer=55, minorTopVer=0], discoEvt=null, nodeId=8bc601d1, evt=NODE_JOINED], nodeId=8bc601d1-19a0-451f-a2d2-bacd56ca49d8]
[10:10:56,189][INFO][disco-event-worker-#38][GridDiscoveryManager] Node left topology: TcpDiscoveryNode [id=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, consistentId=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, addrs=ArrayList [0:0:0:0:0:0:0:1, 192.168.31.110, 127.0.0.1], sockAddrs=HashSet [workstation@domain.com/192.168.31.110:0, /0:0:0:0:0:0:0:1:0, /127.0.0.1:0], discPort=0, order=55, intOrder=30, lastExchangeTime=1582733447345, loc=false, ver=8.7.12#20200211-sha1:e7932313, isClient=true]
[10:10:56,190][INFO][disco-event-worker-#38][GridDiscoveryManager] Topology snapshot [ver=56, locNode=3f133d52, servers=3, clients=1, state=ACTIVE, CPUs=14, offheap=4.8GB, heap=4.0GB]
[10:10:56,192][INFO][exchange-worker-#40][time] Started exchange init [topVer=AffinityTopologyVersion [topVer=56, minorTopVer=0], crd=true, evt=NODE_LEFT, evtNode=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, customEvt=null, allowMerge=true]
[10:10:56,193][INFO][exchange-worker-#40][GridDhtPartitionsExchangeFuture] Finish exchange future [startVer=AffinityTopologyVersion [topVer=56, minorTopVer=0], resVer=AffinityTopologyVersion [topVer=56, minorTopVer=0], err=null]
[10:10:56,193][INFO][exchange-worker-#40][GridDhtPartitionsExchangeFuture] Completed partition exchange [localNode=3f133d52-f007-461b-9e95-0365b2ae12dd, exchange=GridDhtPartitionsExchangeFuture [topVer=AffinityTopologyVersion [topVer=56, minorTopVer=0], evt=NODE_LEFT, evtNode=TcpDiscoveryNode [id=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, consistentId=8bc601d1-19a0-451f-a2d2-bacd56ca49d8, addrs=ArrayList [0:0:0:0:0:0:0:1, 192.168.31.110, 127.0.0.1], sockAddrs=HashSet [workstation@domain.com/192.168.31.110:0, /0:0:0:0:0:0:0:1:0, /127.0.0.1:0], discPort=0, order=55, intOrder=30, lastExchangeTime=1582733447345, loc=false, ver=8.7.12#20200211-sha1:e7932313, isClient=true], done=true, newCrdFut=null], topVer=AffinityTopologyVersion [topVer=56, minorTopVer=0]]
[10:10:56,193][INFO][exchange-worker-#40][GridDhtPartitionsExchangeFuture] Exchange timings [startVer=AffinityTopologyVersion [topVer=56, minorTopVer=0], resVer=AffinityTopologyVersion [topVer=56, minorTopVer=0], stage="Waiting in exchange queue" (1 ms), stage="Exchange parameters initialization" (0 ms), stage="Determine exchange type" (0 ms), stage="Exchange done" (0 ms), stage="Total time" (1 ms)]
[10:10:56,193][INFO][exchange-worker-#40][GridDhtPartitionsExchangeFuture] Exchange longest local stages [startVer=AffinityTopologyVersion [topVer=56, minorTopVer=0], resVer=AffinityTopologyVersion [topVer=56, minorTopVer=0]]
[10:10:56,193][INFO][exchange-worker-#40][time] Finished exchange init [topVer=AffinityTopologyVersion [topVer=56, minorTopVer=0], crd=true]
[10:10:56,194][INFO][exchange-worker-#40][GridCachePartitionExchangeManager] Skipping rebalancing (nothing scheduled) [top=AffinityTopologyVersion [topVer=56, minorTopVer=0], force=false, evt=NODE_LEFT, node=8bc601d1-19a0-451f-a2d2-bacd56ca49d8]

Из журнала клиента похоже, что он пытается подключиться только к первому узлу сервера, даже если у меня есть три серверных узла. Из журнала сервера я вижу, что после обмена init, потребовалось еще 8 секунд, чтобы создать клиент TCP и начать выполнение инструкций.

Из журнала я вижу, что он имеет правильный IP-адрес всех моих трех хосты. Может кто-нибудь предложить решение этого? Как я уже упоминал, я работаю в среде ALL WINDOWS.

Спасибо

Answer 1

Укажите диапазон портов, которые могут использоваться клиентами / серверами Ignite для обнаружения и связи. Проверьте фрагмент XML из этого раздела do c: https://www.gridgain.com/docs/latest/developers-guide/clustering/tcp-ip-discovery#static -ip-finder

Дважды проверьте, что конфигурация искателя IP одинакова для клиентов и серверов. Если проблема сохраняется, проверьте, не применяются ли правила брандмауэра между серверами и клиентами.