This is used to discover peers to form a cluster; remember that only one of these three options can be used for each node and ideally, should be common for the cluster as a whole.
<network>
<join>
<multicast enabled="true">
<multicast-group>224.2.2.3</multicast-group>
<multicast-port>54327</multicast-port>
</multicast>
<tcp-ip enabled="true">
<member>127.0.0.1</member>
</tcp-ip>
<aws enabled="true">
<access-key>ourApiAccessKey</access-key>
<secret-key>ourApiSecretKey</secret-key>
<region>eu-west-1</region>
</aws>
</join>
</network>
NetworkConfig nc = config.getNetworkConfig();
JoinConfig jc = nc.getJoin();
jc.getMulticastConfig()
.setMulticastGroup("224.2.2.3")
.setMulticastPort(54327)
.setEnabled(true);
jc.getTcpIpConfig()
.addMember("127.0.0.1")
.setEnabled(true);
jc.getAwsConfig()
.setAccessKey("ourApiAccessKey")
.setSecretKey("ourApiSecretKey")
.setRegion("eu-west-1")
.setEnabled(true);