Hi folks,

I did a routine reboot on one of my database nodes and it was unable to
start up wsrep afterwards. I'm running MariaDB 10.1.24 with Galera
25.3.20 on CentOS 7.3.1611 (latest).

Jul 03 09:53:07 db2.example.com sh[14400]: WSREP: Failed to start mysqld
for wsrep recovery: '2017-07-03  9:50:49 139825954236672 [ERROR] Can't
open shared library '/usr/lib64/mysql/plugin/auth_socket.so' (errno: 0,
cannot open shared object file: No such file or directory)
Jul 03 09:53:07 db2.example.com sh[14400]: 2017-07-03  9:50:49
139825954236672 [ERROR] Couldn't load plugins from 'auth_socket.so'.

It fails to find auth_socket.so, but when I check in yum what provides
that file, only MariaDB 5.5 from the CentOS repo has it, but not MariaDB
10.1 from the MariaDB repo. I read in the notes that auth_socket is
deprecated and going in 10.2. My config file specifies
'loose-plugin-load=auth_socket'. If I just remove this line, will it
work? Will it break wsrep?

Can someone explain this to me? Right now I am nervous because if the
other nodes also can't start up wsrep after rebooting then I will lose
my cluster. I'm looking for ways to resolve the problem and get the node
back online. I'm happy to upgrade to 10.2 if necessary.

Thanks,
Jonathan


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