Hazelcast 2.1 on AWS

[paolo...@gmail.com]

I recently tried upgrading from Hazelcast 2.0.3 to Hazelcast 2.1.  Using my unmodified HZ-2.0.3 configuration, my 3-node system can no longer establish a connection with each other to form a cluster.  

The following message repeats indefinitely:

2012-05-02 21:58:52,869 T=[main] WARN  ~ [fe80:0:0:0:1031:3bff:fe12:cd71]:10000 [prod] Failed to connect, node joined= false, allConnected= false to all other members after 0 seconds. L=[TcpIpJoinerOverAWS]

2012-05-02 21:58:52,870 T=[main] WARN  ~ [fe80:0:0:0:1031:3bff:fe12:cd71]:10000 [prod] Rebooting after 10 seconds. L=[TcpIpJoinerOverAWS]

Are there new configuration options with Hazelcast 2.1 that I should be aware of?  I have since reverted to 2.0.3 to get my cluster up and running again.

[Talip Ozturk]

Are you using EC2-Discovery?
http://hazelcast.com/docs/2.1/manual/single_html/#EC2AutoDiscovery

Can you post the <network> portion of your config (make sure you
remove private info before posting)?

http://twitter.com/oztalip

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[Mehmet Dogan]

AFAIK, aws has no IPv6 support, it seems your node picked an IPv6 address (version 2.1 introduced IPv6 support). Set 'java.net.preferIPv4Stack' system property to true to make JVM use only IPv4 addresses.

-Djava.net.preferIPv4Stack=true 

-OR-

System.setProperty("java.net.preferIPv4Stack", "true")

Also you can disable IPv6 by property -Djava.net.preferIPv6Addresses=false

@mmdogan

On Thu, May 3, 2012 at 9:05 AM, <paolo...@gmail.com> wrote:

--

[Paolo de Dios]

Ah, that makes sense.  I'll disable IPv6 and force the JVM to use the IPv4 stack.

I hope this tidbit makes it to the official documentation.

Thanks, guys.

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