Remove master/slave references for cultural sensitivity #888
Description
This should be a pretty easy one -- my site has been removing the master and slave parlance from our operations, for obvious reasons, which I was just telling someone and then ran into the same terms in mysqltuner.pl.
Can we change "master" to either "primary" or "source" and "slave" to "replica?"
MariaDB is also making a similar change, but has to worry about backward compatibility in a way that MySQLTuner does not -- it's, unless I'm mistaken, mostly a comprehension thing for this project, and people will pretty easily be able to understand what's being referred to:
https://jira.mariadb.org/browse/MDEV-18777
It appears as if they settled on "primary/replica" which I think is better, and then discovered MySQL was using "source/replica," which is lamentable, but eh...
I could probably work up a PR if it's not otherwise possible, but I'm not really a programmer, so someone else might be able to do this more safely.