问题描述
我们有一个Hazelcast节点集群都在一个远程系统上运行（具有许多节点的单个物理系统）。我们想从外部客户端连接到这个集群 - 一个使用以下代码连接到Hazelcast的Java应用程序：
We have a cluster of Hazelcast nodes all running on one remote system (single physical system with many nodes). We would like to connect to this cluster from an external client - a Java application which uses code as below to connect to Hazelcast:
ClientConfig clientConfig = new ClientConfig();
clientConfig.addAddress(config.getHost() + ":" + config.getPort());
client = HazelcastClient.newHazelcastClient(clientConfig);
其中，host是远程IP，端口是5701。
where, host is the IP of remote and port is 5701.
这仍然连接到本地主机（127.0.0.1）。我缺少什么？
This still connects to the local host (127.0.0.1). What am I missing?
编辑：
如果java客户端是只有在本地系统上运行的hazelcast应用程序，它无法连接并抛出异常： java.lang.IllegalStateException：无法获取初始分区！
If the java client is the only hazelcast app running on the local system, it fails to connect and throws the exception: java.lang.IllegalStateException: Cannot get initial partitions!
来自日志：
14：58：26.748 [main] INFO com.hazelcast.core.LifecycleService -
HazelcastClient [hz.client_0_dev] [3.2.1]正在开始
14:58:26.748 [main] INFO com.hazelcast.core.LifecycleService - HazelcastClient[hz.client_0_dev][3.2.1] is STARTING
14：58：27.029 [main] INFO com.hazelcast.core.LifecycleService -
HazelcastClient [hz.client_0_dev] [3.2.1]是已开始
14:58:27.029 [main] INFO com.hazelcast.core.LifecycleService - HazelcastClient[hz.client_0_dev][3.2.1] is STARTED
14：58：27.061 [hz.client_0_dev.cluster-listener] INFO
com.hazelcast.core.LifecycleService -
HazelcastClient [hz .client_0_dev] [3.2.1]是CLIENT_CONNECTED
14:58:27.061 [hz.client_0_dev.cluster-listener] INFO com.hazelcast.core.LifecycleService - HazelcastClient[hz.client_0_dev][3.2.1] is CLIENT_CONNECTED
14：58：27.061 [hz.client_0_dev.cluster-listener] INFO
chclient.spi.ClientClusterService -
14:58:27.061 [hz.client_0_dev.cluster-listener] INFO c.h.client.spi.ClientClusterService -
成员[5] {成员[127.0.0.1]：5701成员[127.0.0.1]：5702
成员[127.0.0.1]：5703成员[127.0.0.1]：5704成员
[127.0.0.1]：5705}
Members [5] { Member [127.0.0.1]:5701 Member [127.0.0.1]:5702 Member [127.0.0.1]:5703 Member [127.0.0.1]:5704 Member [127.0.0.1]:5705 }
14：58：47.278 [ main] ERROR chcspi.ClientPartitionService - 在获取集群分区表时出错
！
14:58:47.278 [main] ERROR c.h.c.spi.ClientPartitionService - Error while fetching cluster partition table!
com.hazelcast.spi.exception.RetryableIOException：
java。 util.concurrent.ExecutionException：
com.hazelcast.core.HazelcastException：java.net.ConnectException：
连接被拒绝：没有进一步的信息......引起：
java.util.concurrent。 ExecutionException：
com.hazelcast.core.HazelcastException：java.net.ConnectException：
连接被拒绝：没有进一步的信息
com.hazelcast.spi.exception.RetryableIOException: java.util.concurrent.ExecutionException: com.hazelcast.core.HazelcastException: java.net.ConnectException: Connection refused: no further information ... Caused by: java.util.concurrent.ExecutionException: com.hazelcast.core.HazelcastException: java.net.ConnectException: Connection refused: no further information
在java.util。 concurrent.FutureTask.report（未知来源）
~ [na：1.8.0_31]
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_31]
at java.util.concurrent.FutureTask.get（Unknown Source） 〜[na：1.8.0_31]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_31]
at
com.hazelcast.client.connection.nio.ClientConnectionManagerImpl.getOrConnect（ClientConnectionManagerImpl.java:282)
~ [BRBASE-service-manager-1.0.0- jar-with-dependencies.jar：na]
at com.hazelcast.client.connection.nio.ClientConnectionManagerImpl.getOrConnect(ClientConnectionManagerImpl.java:282) ~[BRBASE-service-manager-1.0.0-jar-with-dependencies.jar:na]
...省略了14个常见帧
... 14 common frames omitted
引起： com.hazelcast.core.HazelcastException：
java.net.ConnectException：连接被拒绝：没有更多信息
Caused by: com.hazelcast.core.HazelcastException: java.net.ConnectException: Connection refused: no further information
at com.hazelcast.util.ExceptionUtil.rethrow（ ExceptionUtil.java:45）
~ [BRBASE-service-manager-1.0.0-jar-with-dependencies.jar：na] ...
at com.hazelcast.util.ExceptionUtil.rethrow(ExceptionUtil.java:45) ~[BRBASE-service-manager-1.0.0-jar-with-dependencies.jar:na] ...
推荐答案
要连接到远程群集，请确保群集使用外部IP而不是 127.0.0.1 。在我们的例子中，我们有一个物理系统，有多个节点，启用了 tcp-ip 模式。 hazelcast.xml 具有以下配置：
To connect to the remote cluster, make sure the cluster uses the external IP and not 127.0.0.1. In our case we have a single physical system, with multiple nodes, with tcp-ip mode enabled. The hazelcast.xml has the configuration:
<tcp-ip enabled="true">
<!-- This should be external IP -->
<interface>172.x.x.x</interface>
</tcp-ip>
这篇关于Hazelcast：连接到远程群集的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！