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I'm currently trying to make a cluster of N nodes on n computer. But (I'm not a network expert), in my office network, multicast is only allowed on specific multicasr groups and port.

I didn't find in crate config how to specify group ip, Hazelcast can do this.

Any idea ? Multicast is so much cool than unicast.

thanks.

pnuts
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user2789185
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2 Answers2

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As Crate uses Elasticsearch for discovery (and for lot of other things), configuring a multicast group is done the same way as in Elasticsearch.

Add following to your crate.yml:

discovery.zen.ping.multicast.group: <YOUR_GROUP>

See also https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-discovery-zen.html#multicast

Sebastian Utz
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Have a look at MulticastConfig.

Config config = new Config();
config.getNetworkConfig().getJoin().getMulticastConfig()
            .setMulticastGroup(multicastGroup)
            .setMulticastPort(multicastPort);    
HazelcastInstance hz = Hazelcast.newHazelcastInstance(config);
pveentjer
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