How to solve the problem "Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (13 "Permission denied")"?

Question

MySQL

At first I got this error

ERROR 2002 (HY000): Can't connect
to local MySQL server through
socket '/var/run/mysqld/mysqld.sock' (2)

Found a solution on this mysql site , after which the error came from the header.
Here are the permissions set on the mysql.sock folder and file

┌─(/var/run/mysqld)───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────([email protected]:pts/17)─┐
└─(16:06:24)──> ll                                                                                                                                            ──(Ср,сен13)─┘
итого 0
drwxr-xr-x  2 mysql root  60 сен 13 15:54 ./
drwxr-xr-x 29 root  root 900 сен 13 13:49 ../
prw-r--r--  1 mysql root   0 сен 13 15:54 mysqld.sock|

I mean that the reason is connected with the rights.
It's strange, but I don't have a mysql group, as in the article, I created it myself and added to it, in my opinion I did it in vain.
How to decide? Thanks in advance.

Answer 1

Restored the system and mysql earned, the only way so far

Answer 2

as a host, instead of localhost , write 127.0.0.1 or vice versa

Answer 3

according to the output of ll
, you have a mysql user and the root group
should be vice versa
, perhaps after that you need to re-login
or hang mysql on a tcp socket, as advised by Ilya Beloborodov