I am trying to use pt-table-checksum on two master servers that replicate to one slave.
So there are two master servers, A and B, with different databases on each. Then there is one slave server, C, which runs two named slaves to replicate the two master servers. In other words
SHOW SLAVE ‘A’ STATUS\G;
SHOW SLAVE ‘B’ STATUS\G;
shows the two slave processes. For those not familiar, this setup is used because separate slave servers for each master would result in one unnecessary server.
The problem is it seems pt-table-checksum runs a ‘SHOW SLAVE STATUS’ check and with this setup that returns an empty set, so pt-table-checksum thinks the slave us not running which in fact it is.
Any way to run pt-table-checksum while telling it to access the named slave on the slave server?