Hello,

Can you check ping between data centers?
If delay of network may be long, you can incrase FailureDetectionTimeout
(use
org.apache.ignite.configuration.IgniteConfiguration#setFailureDetectionTimeout)

In additional you need make sure what communication ports are available in
all nodes (by default
org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi#DFLT_PORT) .
You can see all ports, which are will by used, in debug level logger.

If nothing to help, please provide log files from all nodes and I could see
details.

Also I see you are not subscribed on users mail list. Can you please
subscribe?
You can do it from this page
https://ignite.apache.org/community/resources.html

Also I see you are not subscribed on users mail list. Can you please
subscribe?
You can do it from this page
https://ignite.apache.org/community/resources.html


visagan wrote
> Hi, 
> 
> I have two nodes in data center A and two nodes in Data center B.  I have
> opened up the ignite default ports and i am able to talk to all nodes and
> ports if i use  "nc" command. 
> 
> But when i try to make the ignite cluster work, the four nodes join and
> form a cluster and then they leave. 
> 
> I am able to see the total memory to increase from 24GB (when two nodes
> are in the cluster) to 36 and then to 48GB and then the other two nodes
> leave with an event NODE_FAILED. 
> But the nodes in the corresponding data center forms the cluster within
> themselves and lives there happily. 
> When i turn on the cross data center, though it is able to discover the
> nodes, it fails after joining with the other nodes. 
> Is there any possibly know reason for this ? 





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