Hi, Paolo, please try to use org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder as the IpFinder in TcpDiscoverySpi. This is "IP Finder which works only with pre-configured list of IP addresses specified via {@link #setAddresses(Collection)} method." Also you may need to specify different org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi#setLocalPort ports to allow several server nodes on the same machine and better differentiate nodes of the 2 different topologies.
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