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odd message in my /var/log/message file

hello -

i finally figured out to do:

grep  mysqld   /var/log/messages ;

and i see LOTS of the following mesage:

Jun 13 12:10:02 MYNAME mysqld: 2019-06-13 12:10:02 140023410034432 [Warning] Access denied for user 'root'@'localhost' (using password: YES)

i am surprised that the root user is getting so many warning messages. i do see SOME messages other than warnings:

Jun 13 12:06:22 myname mysqld: 2019-06-13 12:06:22 140023945005248 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
Jun 13 12:06:22 myname mysqld: 2019-06-13 12:06:22 140023945005248 [Note] InnoDB: Waiting for purge to start
Jun 13 12:06:22 myname mysqld: 2019-06-13 12:06:22 140023945005248 [Note] InnoDB: 5.7.26 started; log sequence number 35414426330
Jun 13 12:06:22 myname mysqld: 2019-06-13 12:06:22 140023069234944 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool
Jun 13 12:06:22 myname mysqld: 2019-06-13 12:06:22 140023945005248 [Note] Plugin 'FEEDBACK' is disabled.
Jun 13 12:06:22 myname mysqld: 190613 12:06:22 server_audit: MariaDB Audit Plugin version 1.4.5 STARTED.
Jun 13 12:06:23 myname mysqld: 190613 12:06:22 server_audit: Query cache is enabled with the TABLE events. Some table reads can be veiled.2019-06-13 12:06:23 140023945005248 [Note] Reading of all Master_info entries succeded
Jun 13 12:06:23 myname mysqld: 2019-06-13 12:06:23 140023945005248 [Note] Added new Master_info '' to hash table
Jun 13 12:06:23 myname mysqld: 2019-06-13 12:06:23 140023945005248 [Note] /usr/sbin/mysqld: ready for connections.
Jun 13 12:06:23 myname mysqld: Version: '10.2.24-MariaDB'  socket: '/var/lib/mysql/mysql.sock'  port: 0  MariaDB Server

yet when i look in my /.my.cnf file i see the following:

[client]
user=root
pass=SUPERSECRETPASSWOrD

Server version: 10.2.24-MariaDB MariaDB Server Linux edwardsmark.info 3.10.0-957.12.2.el7.x86_64 #1 SMP Tue May 14 21:24:32 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

apologies for all these frantic questions - i am ON VACATION and trying to switch hotel rooms. horrible timing.

Answer Answered by Mark Edwards in this comment.

this worked: (finally)

set  global  server_audit_events          = 'CONNECT,QUERY,TABLE'  ;
set  global  server_audit_logging          = 'ON'  ;
set global server_audit_file_rotate_size  =  100000000 ;
SHOW GLOBAL VARIABLES LIKE 'server_audit%';


 grep  DROP    /var/lib/mysql/server_audit.log ;
 tail -f    /var/lib/mysql/server_audit.log ;
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