What is your purpose for wanting to have a second "synced" database? There are potentially a few different ways to do this, but it depends on what you're trying to achieve.
There are two purposes. One is to backup DB automatically. The other one is to switch to the second DB machine in a quick way when the first DB machine is crashed. Any suggestion?
I did try sync BD between 2 machines (my Core server is running on the third machine). The problem is the console was not working right when I switch to the second DB machine by configuring the Core from the console. Some functions were broken. Any idea what would be the root cause?