Hi Colin, hi guys! =) other doubt, but not a "cluster" doubt, now a replication doubt... check if this is possible, or i'm getting crazy =) two mariadb servers (last version ~10.0.5): A and B A have the same tables of B B have the same tables of A they are both empty when i write at A it replicate to B when i write at B it replicate to A if i have a solution at client site (application) that allow write to A only using a primary key starting with "A" and writes at B a primary key starting with "B", in other words.. writing at A: using WHERE pk_field="A" writing at B: using WHERE pk_field="B" could this replicate A to B, and B to A? for example, does this get in a "infinite loop", like: A: UPDATE table SET f=1 WHERE pk_field="a" A replicate to ->B: UPDATE table SET f=1 WHERE pk_field="a" B replicate to ->A: UPDATE table SET f=1 WHERE pk_field="a" A replicate to ->B: UPDATE table SET f=1 WHERE pk_field="a" endless loop replicating from A->B, B->A, A->B, B->A, etc... this could happen, or replication know when it do a "loop" at replication? i'm not sure if i'm right, but since A is master of B, and B act as a slave for first update, i think it will not replicate to A, i'm right? thanks!