mariadb ldap auth

[mj <lists@merit.unu.edu>]

Hi,

I have installed mariadb and configured pam authentication, and 
configured a mysql pam module like this:

> /etc/pam.d/mysql
> auth      required       pam_winbind.so
> account   required       pam_winbind.so

which basically gives my samba winbind users access to mysql with their 
windows credentials:

> root@mysqlserver:~# mysql -udomain_username -p
> Enter password: <windows_domain_password>
> Welcome to the MariaDB monitor.  Commands end with ; or \g.
> Your MariaDB connection id is 6
> Server version: 10.1.26-MariaDB-0+deb9u1 Debian 9.1
>
> Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.
>
> Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
>
> MariaDB [(none)]> 

So I was happy.

But this seems to work only from the localhost mariadb is running on. 
Trying this from a remote mysql client gives:

> user@e7470 ~ $ mysql -udomain_user -p -h mysqlserver.full.address
> Enter password: 
> ERROR 2059 (HY000): Authentication plugin 'dialog' cannot be loaded: /usr/lib/mysql/plugin/dialog.so: cannot open shared object file: No such file or directory

and searching for /usr/lib/mysql/plugin/dialog.so gives no results:

> user@e7470 ~ $ dpkg --search /usr/lib/mysql/plugin/dialog.so
> dpkg-query: no path found matching pattern /usr/lib/mysql/plugin/dialog.so
> user@e7470 ~ $ 

Anyone here with a good suggestion how to achieve this from a remote 
mysql client?

MJ