I got the Error Code: 2013. Lost connection to MySQL server during query error when I tried to add an index to a table using MySQL Workbench. I noticed als
I ran into this while running a stored proc- which was creating lots of rows into a table in the database. I could see the error come right after the time crossed the 30 sec boundary.
I tried all the suggestions in the other answers. I am sure some of it helped , however- what really made it work for me was switching to SequelPro from Workbench.
I am guessing it was some client side connection that I could not spot in Workbench. Maybe this will help someone else as well ?