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);
where, host is the IP of remote and port is 5701.
This still connects to the local host (127.0.0.1). What am I missing?
Edit:
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!
From the logs:
14:58:26.717 [main] INFO c.m.b.p.s.s.HazelcastCacheClient - creating new Hazelcast instance
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] 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] is CLIENT_CONNECTED
14:58:27.061 [hz.client_0_dev.cluster-listener] INFO c.h.client.spi.ClientClusterService -
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 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: Connection refused: no further information ... Caused by: java.util.concurrent.ExecutionException: com.hazelcast.core.HazelcastException: java.net.ConnectException: Connection refused: no further information
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 com.hazelcast.client.connection.nio.ClientConnectionManagerImpl.getOrConnect(ClientConnectionManagerImpl.java:282) ~[BRBASE-service-manager-1.0.0-jar-with-dependencies.jar:na]
... 14 common frames omitted
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] ...
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>