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, ownership of the msyql directory had somehow changed to admin:admin. I use ares suggestion to run mysqld from the terminal:

sudo /usr/local/mysql/support-files/mysql.server start

Which showed a permissions error writing to a msyql file.

I fixed with this command:

sudo chown -R _mysql:wheel /usr/local/mysql/data

from this post:

What user should own /usr/local/mysql on Mac?

Answer 2

After a discussion with Richard, the following solves the issue:

my.cnf:

[client]

port = 3306
socket = /tmp/mysql.sock


[mysqld]

port = 3306
socket = /tmp/mysql.sock
datadir = /usr/local/mysql-5.7.17-macos10.12-x86_64/data
tmpdir = /tmp

Essentially, although we'd added the relevant stanza's to the my.cnf file, we'd still missed the section heading. Adding the [mysqld] section allowed mysql to start.

Answer 3

My problem was that due to an incorrect restart of my machine, a database was corrupted. According to their docs doing a forced InnoDB Recovery did the trick:

/etc/my.cnf

innodb_force_recovery = 2

Answer 4

I suggest to use Terminal commands.

Start MySQL

sudo /usr/local/mysql/support-files/mysql.server start

Stop MySQL

sudo /usr/local/mysql/support-files/mysql.server stop

Restart MySQL

sudo /usr/local/mysql/support-files/mysql.server restart

Answer 5

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.

Answer 6

My problem was that I installed MySQL a while ago with Homebrew (forgot I did) and then went the more manual route, so I think the two installs were fighting each other. I wiped my Mac of both with the help of this walkthrough: https://gist.github.com/vitorbritto/0555879fe4414d18569d

Note: Where it says to use subl - that's Sublime, use whatever editor you like.

I was able to get things to work with a fresh install after that.