I upgraded to MySQL 8.0 from 5.7 via homebrew, and found it is not working (maybe another reason might be I use Mojave Beta, but I'm not sure).
The mysql command gets me the following:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
According to brew mysql info, I must launch it via brew services start mysql, so I started it (actually it was already running so I restarted), but nothing changed from the message above.
Also, ps -xa | grep mysql does not list anything but the grep itself.
So what is causing the launching error in my environment and how can I investigate this problem further?
Answer
Unfortunately, the user closed this question which is cleary related to version 8.0 upgrade and then guided me to the question that does not have the answer, so I cannot post my answer here, but if you hit the same wall, check the answer I just wrote on the linked page.
