You might want to ask again on the Clusterlabs mailing list, most discussion has moved there. On 09/10/15 06:03 PM, Christopher Harvey wrote: > I'm been looking at the corosync source code to see if I could figure > out a way to get it to run behind a NAT (or in my case, within a docker > container). I'm only interested in the unicast UDP case. It looks like > corosync is sending commit tokens to all discovered nodes, and these > commit tokens include the IP addresses of all discovered nodes, > including the 'this' node. That is, in a two node case, if node A is a > machine with an interface with IP 192.168.0.1, and machine B is on the > WAN with IP 7.7.7.7, node A sends a commit token like this: > dest: 7.7.7.7 > nodeid: 0 ip: 192.168.0.1 > > node B sees this token, updates it's own commit token with the IP > 192.168.0.1 and in turn tries to contact 192.168.0.1, which of course > fails because there is no corosync host running on B's network. I'm a > little fuzzy on the details because I've only just started to look at > this, but it looks like node B forgets about the configured WAN address > of A and overwrites it with A's internal IP. > > Why would a node on a corosync cluster send its own IP address as part > of a commit token? Why wouldn't each node implicitly know there was a > sender node in addition to the list of nodes that already exists in the > received commit token? > > I'm guessing I'm not the first person to want to run corosync behind a > NAT, but a google search hasn't turned up much as to why this isn't > supported. I can't think of a technical reason, and it bothers me. > > Thanks, > Chris > _______________________________________________ > discuss mailing list > discuss@xxxxxxxxxxxx > http://lists.corosync.org/mailman/listinfo/discuss > -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education? _______________________________________________ discuss mailing list discuss@xxxxxxxxxxxx http://lists.corosync.org/mailman/listinfo/discuss
