MySQL replication - database size is different I have enabled MySQL master-master replication with 2nd master acting as read-only. Recently I checked the out the size of the databases in both master and slave and I found that database size in two databases is 1mb less than the Master. Does it mean that the setup which I made for master-slave was not done properly or the replication is not happening properly?
Also, how can I make the changes so that it remains the same in both master and slave?

Thanks!
The setup can differ slightly in size and be consistent at the same time. Could be a range of reasons for the size difference. E.g. Different file system, fragmentation, method of determining size, etc...

If you want to test the consistency of your replicated tables, run a pt-table-checksum.