Question

我有一个非常简单的Hazelcast客户端，我用它连接到群集的实例。看到我连接到localhost（127.0.0.1）以及远程服务器（xxx.xx.xx.x）。

public HazelcastCacheClient(String mapName, Map<K,V> cacheMap) {

    Config cfg = new Config();
    NetworkConfig networkConfig = cfg.getNetworkConfig();
    networkConfig.setPort(5701);
    networkConfig.setPortCount(1);

    JoinConfig joinConfig = networkConfig.getJoin();
    joinConfig.getMulticastConfig().setEnabled(false);
    joinConfig.getAwsConfig().setEnabled(false);
    joinConfig.getTcpIpConfig()
                    .addMember("127.0.0.1, xxx.xx.xx.x").setEnabled(true);

    HazelcastInstance instance = Hazelcast.newHazelcastInstance(cfg);

    Map<String, Integer> map = instance.getMap(mapName);
}

我在CentOS服务器上打开了端口5701-5710（xxx.xx.xx.x），但在日志中看到以下内容：

com.hazelcast.instance.DefaultAddressPicker
INFO: [LOCAL] [dev] [3.5.5] Resolving domain name 'xxx.xx.xx.x' to address(es): [xxx.xx.xx.x]
com.hazelcast.instance.DefaultAddressPicker
INFO: [LOCAL] [dev] [3.5.5] Interfaces is disabled, trying to pick one address from TCP-IP config addresses: [xxx.xx.xx.x/xxx.xx.xx.x, 127.0.0.1]
com.hazelcast.instance.DefaultAddressPicker
INFO: [LOCAL] [dev] [3.5.5] Picked Address[127.0.0.1]:5701, using socket ServerSocket[addr=/0:0:0:0:0:0:0:0,localport=5701], bind any local is true
com.hazelcast.spi.OperationService
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Backpressure is disabled
com.hazelcast.spi.impl.operationexecutor.classic.ClassicOperationExecutor
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Starting with 4 generic operation threads and 8 partition operation threads.
com.hazelcast.system
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Hazelcast 3.5.5 (20160122 - 6805b8e) starting at Address[127.0.0.1]:5701
com.hazelcast.system
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Copyright (c) 2008-2015, Hazelcast, Inc. All Rights Reserved.
 com.hazelcast.instance.Node
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Creating TcpIpJoiner
com.hazelcast.core.LifecycleService
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Address[127.0.0.1]:5701 is STARTING
com.hazelcast.nio.tcp.SocketConnector
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Connecting to xxx.xx.xx.x/xxx.xx.xx.x:5701, timeout: 0, bind-any: true
com.hazelcast.nio.tcp.SocketConnector
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Connecting to xxx.xx.xx.x/xxx.xx.xx.x, timeout: 0, bind-any: true
com.hazelcast.nio.tcp.SocketConnector
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Connecting to /127.0.0.1:5703, timeout: 0, bind-any: true
com.hazelcast.nio.tcp.SocketConnector
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Connecting to /127.0.0.1:5702, timeout: 0, bind-any: true
com.hazelcast.nio.tcp.SocketConnector
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Connecting to xxx.xx.xx.x/xxx.xx.xx.x:5703, timeout: 0, bind-any: true
com.hazelcast.nio.tcp.SocketConnector
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Could not connect to: /127.0.0.1:5702. Reason: SocketException[Connection refused to address /127.0.0.1:5702]
com.hazelcast.nio.tcp.SocketConnector
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Could not connect to: /127.0.0.1:5703. Reason: SocketException[Connection refused to address /127.0.0.1:5703]
com.hazelcast.cluster.impl.TcpIpJoiner
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Address[127.0.0.1]:5702 is added to the blacklist.
com.hazelcast.cluster.impl.TcpIpJoiner
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Address[127.0.0.1]:5703 is added to the blacklist.
com.hazelcast.nio.tcp.SocketConnector
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Could not connect to: xxx.xx.xx.x/xxx.xx.xx.x:5701. Reason: SocketException[Connection refused to address xxx.xx.xx.x/xxx.xx.xx.x:5701]
com.hazelcast.cluster.impl.TcpIpJoiner
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Address[xxx.xx.xx.x]:5701 is added to the blacklist.
com.hazelcast.cluster.impl.TcpIpJoiner
INFO: [127.0.0.1]:5701 [dev] [3.5.5] 


Members [1] {
    Member [127.0.0.1]:5701 this
}

Jul 19, 2016 12:32:45 AM com.hazelcast.core.LifecycleService
INFO: [127.0.0.1]:5701 [dev] [3.5.5] Address[127.0.0.1]:5701 is STARTED

如您所见，连接到localhost（127.0.0.1）没有问题，但它无法连接到远程服务器xxx.xx.xx.x.我已经通过CentOS服务器上的防火墙为5701启用了端口。

特别注意以下几行： INFO：[127.0.0.1]：5701 [dev] [3.5.5]无法连接到：xxx.xx.xx.x / xxx.xx.xx.x：5701。原因：SocketException [连接拒绝解决xxx.xx.xx.x / xxx.xx.xx.x：5701]

Answer 1

您的配置看起来不错，但我认为它是伪代码，因为没有var-arg方法addMember。您可以多次调用addMember方法，或使用setMembers方法添加几个成员。

您没有发布第一个节点的配置。您需要具有相同的配置 - 包括群集名称和密码（如果已定义它们）。

它也可能是防火墙问题 - 尝试执行telnet xxx.xxxx.xxx.xx 5701以查看是否可以成功打开连接。

Answer 2

马特，

这是您创建新客户端的方法

import com.hazelcast.client.HazelcastClient;
import com.hazelcast.client.config.ClientConfig;

public void HazelcastCacheClient(String mapName, Map cacheMap) {

    ClientConfig cfg = new ClientConfig();
    cfg.getNetworkConfig().addAddress("xxx.xx.xx.x");

    HazelcastInstance instance = HazelcastClient.newHazelcastClient(cfg);

    cacheMap = instance.getMap(mapName);

}

使用您使用的API，您只需在localhost上启动成员。您需要确保在xxx.xx.xx.x:5701（默认端口）上运行Hazelcast成员。

谢谢

Hazelcast连接拒绝解决x

2 个答案: