Description

Today, when adding a MySQL slave node to the online production environment, the following error was reported when executing the command to back up MySQL data:

Can 't connect to local MySQL server through socket '/tmp/mysql.sock '(2) "

The general meaning of error reporting is that MySQL under TMP cannot be found Sock file

Solution:

1. First find mysql Directory where the sock is located

find/-name mysql.sock

2. Create/TMP/MySQL Sock soft connect to the file
establish a soft connection (write an absolute path):

ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock

If the manual residual soft connection is wrong, you can delete it with the following command:

rm -rf /tmp/mysql.sock

Re-execute MySQL command, perfect solution!!