mysql: find sockets on default mariadb installation on Debian

[mueller-ma]

General information

The current auto-detect command doesn't work on a default MariaDB installation on Debian for two reasons:

• The account is called mariadbd
• No "socket" is in the CMD printed by ps

Bug reports

No output of the current auto-detect code:

[root@mariadb ~]# ps -fww -C mysqld | grep "socket"
[root@mariadb ~]# ps -fww -C mariadbd | grep "socket"
[root@mariadb ~]#

Proposed changes

As the default socket is /run/mysqld/mysqld.sock, use all sockets in /run/mysqld to support multi-instance setups.

From new Debian installation:

root@ca9b0a452ef5:/# grep socket -Ri /etc/mysql/
/etc/mysql/my.cnf:# Port or socket location where to connect
/etc/mysql/my.cnf:socket = /run/mysqld/mysqld.sock
/etc/mysql/my.cnf.fallback:# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
/etc/mysql/debian.cnf:# anyway thanks to unix socket authentication and hence
/etc/mysql/mariadb.cnf:# Port or socket location where to connect
/etc/mysql/mariadb.cnf:socket = /run/mysqld/mysqld.sock