[Bucardo-general] Multi-Master configuration in Bucardo

David Christensen david at endpoint.com
Mon Jan 8 22:25:35 UTC 2018

Hi Ning,

You should only run the bucardo commands on a single node (the server that you are running the “bucardo daemon” on).  That node can be, but need not be, one of the database nodes.  There is a single Bucardo daemon, not one that runs on each nose, so it is unnecessary (and unadvised) to have them running on each node.

When setting up a multi-master database cluster, you will just add each of the databases in the database groups as sources; it will work out that you mean to do a multi-master cluster.

Updating your example:

./bucardo add db mmdb01 dbname=test host=mmdb01 user=bucardo
./bucardo add db mmdb02 dbname=test host=mmdb02 user=bucardo
./bucardo add db mmdb03 dbname=test host=mmdb03 user=bucardo
./bucardo add all tables -T test1 herd=mmdb_herd
./bucardo add dbgroup mmdb_db_group  mmdb01:source
./bucardo add dbgroup mmdb_db_group  mmdb02:source
./bucardo add dbgroup mmdb_db_group  mmdb03:source
./bucardo add sync mmdb_sync herd=mmdb_herd dbs=mmdb_db_group autokick=0
./bucardo validate mmdb_sync
./bucardo update sync mmdb_sync autokick=1
./bucardo start

As far as the stalling behavior, that is currently how Bucardo is written, so this is a known issue.


David Christensen
End Point Corporation
david at endpoint.com

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