Hi，Ben,
I am agreed that ，under normal circumstances， there is no need to
allow left server back to origin server . But I met some strange situation. For
example ,sometimes, one server may be with two diffrent UUIDs recorded by
Leader server.
I think if the left server could be back to origin server, it will
be a easy solution to solve many strange problems.
Thanks,
Yun
At 2019-11-06 05:31:25, "Ben Pfaff" <b...@ovn.org> wrote:
>On Tue, Nov 05, 2019 at 08:10:41PM +0800, taoyunupt wrote:
>> Hi,Numan,
>> When I run OVN/RAFT cluster, I found a server(which
>> initiative to leave or be kicked off ) ,cannot be added back to origin
>> cluster. I found the code as following, can you tell me the reason , many
>> thanks!
>>
>>
>> case RAFT_REC_NOTE:
>> if (!strcmp(r->note, "left")) {
>> return ovsdb_error(NULL, "record %llu indicates server has left "
>> "the cluster; it cannot be added back (use "
>> "\"ovsdb-tool join-cluster\" to add a new "
>> "server)", rec_idx);
>
>The Raft dissertation doesn't contemplate the possibility of a server
>re-joining a cluster. Allowing it would add new corner cases that
>aren't worth dealing with.
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