private IP is sent to other nodes when nodes are behind NAT

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Rajeev Naik

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Mar 4, 2025, 12:16:37 AMMar 4

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Hi,

I have set "--wsrep_node_address", "ist.recv_addr", "--wsrep-sst-receive-address" with DNS name of the node. And I have proper host aliases in each node to resolve the DNS name to public IP.

Cluster starts fine and works for a while. When one nodes goes down, the other nodes start hitting the private IP of the died node. I.e. the wsrep is somehow sending private IP to other nodes. When that node comes back up, then it doesn't connect, it goes in crash loop saying duplicate uuid.

Is there a config to say not to send the listen_address to other nodes?

why there is empty string here for the remote_address - https://github.com/MariaDB/galera/blob/bf2cb1c31b03b55e39725460e5b6eb535ac46f25/gcomm/src/gmcast.cpp#L527 ?

Thanks,

Rajeev

Rajeev Naik

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Mar 4, 2025, 5:33:05 PMMar 4

to codership

code link from codership repo - https://github.com/codership/galera/blob/4.x/gcomm/src/gmcast.cpp#L524