MacOS Can't start MySQL Server

Question

I have MacOS Sierra. I have installed MySQL Server which has been working, however, after a reboot of the Mac Book, I cannot start the MySQL Server.

I have trie

Answer 1

In my case, I had inadvertently transferred ownership of entire /usr/local directory to myself, which resulted in snatching-away of write permission of /usr/local/mysql-5.7.20-macos10.12-x86_64/data directory from the daemon user called "_mysql".

Restoring the ownership fixed the issue.