[CentOS] SOT: MariaDB 5.5.x-MariaDB logs are not going to desired .log file

Hi there, I know this is off-topic or semi off-topic but I really need some
help since I am stucked.

I'm trying to redirect MariaDB logs to `/var/log/mysql/*.log` files as
shown below on the `/etc/my.cnf.d/server.cnf` file:

    #
    # These groups are read by MariaDB server.
    # Use it for options that only the server (but not clients) should see
    #
    # See the examples of server my.cnf files in /usr/share/mysql/
    #

    # this is read by the standalone daemon and embedded servers
    [server]

    # this is only for the mysqld standalone daemon
    [mysqld]
    #wait_timeout=28800
    #interactive_timeout = 28800
    max_allowed_packet=512M

    #General Query Log
    general_log_file        = /var/log/mysql/mysql_query.log
    general_log             = 1

    #Error Log
    log_error               = /var/log/mysql/mysql_error.log

    #Slow Query Log
    slow_query_log          = 1
    slow_query_log_file     = /var/log/mysql/mysql_slow.log
    long_query_time         = 2
    log-queries-not-using-indexes

    collation-server = utf8_general_ci
    init-connect='SET NAMES utf8'
    character-set-server = utf8

    # this is only for embedded server
    [embedded]

    # This group is only read by MariaDB servers, not by MySQL.
    # If you use the same .cnf file for MySQL and MariaDB,
    # you can put MariaDB-only options here
    [mariadb]

    # This group is only read by MariaDB-10.0 servers.
    # If you use the same .cnf file for MariaDB of different versions,
    # use this group for options that older servers don't understand
    [mariadb-5.5]

`mysql_query.log`, `mysql_error.log` and `mysql_slow.log` should go to
`/var/log/mysql/`, right? For some reason, unknow to me, they are not
going. I did run the following query:

    MariaDB [(none)]> show variables like '%log%';

And this is the output:

+-------------------------------------------+--------------------------------------------------------------------------------------------------------------+
| Variable_name                             | Value

   |
+-------------------------------------------+--------------------------------------------------------------------------------------------------------------+
| aria_checkpoint_log_activity              | 1048576

   |
| aria_log_file_size                        | 1073741824

    |
| aria_log_purge_type                       | immediate

   |
| aria_sync_log_dir                         | NEWFILE

   |
| back_log                                  | 50

    |
| binlog_annotate_row_events                | OFF

   |
| binlog_cache_size                         | 32768

   |
| binlog_checksum                           | NONE

    |
| binlog_direct_non_transactional_updates   | OFF

   |
| binlog_format                             | STATEMENT

   |
| binlog_optimize_thread_scheduling         | ON

    |
| binlog_stmt_cache_size                    | 32768

   |
| expire_logs_days                          | 0

   |
| general_log                               | OFF

   |
| general_log_file                          | pdone-prod.log

    |
| innodb_flush_log_at_trx_commit            | 1

   |
| innodb_locks_unsafe_for_binlog            | OFF

   |
| innodb_log_block_size                     | 512

   |
| innodb_log_buffer_size                    | 8388608

   |
| innodb_log_file_size                      | 5242880

   |
| innodb_log_files_in_group                 | 2

   |
| innodb_log_group_home_dir                 | ./

    |
| innodb_mirrored_log_groups                | 1

   |
| innodb_recovery_update_relay_log          | OFF

   |
| innodb_use_global_flush_log_at_trx_commit | ON

    |
| log                                       | OFF

   |
| log_bin                                   | OFF

   |
| log_bin_trust_function_creators           | OFF

   |
| log_error                                 |
/var/lib/mysql/pdone-prod.pdi-inc.com.err
                                 |
| log_output                                | FILE

    |
| log_queries_not_using_indexes             | OFF

   |
| log_slave_updates                         | OFF

   |
| log_slow_filter                           |
admin,filesort,filesort_on_disk,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk
|
| log_slow_queries                          | OFF

   |
| log_slow_rate_limit                       | 1

   |
| log_slow_verbosity                        |

   |
| log_warnings                              | 1

   |
| max_binlog_cache_size                     | 18446744073709547520

    |
| max_binlog_size                           | 1073741824

    |
| max_binlog_stmt_cache_size                | 18446744073709547520

    |
| max_relay_log_size                        | 0

   |
| relay_log                                 |

   |
| relay_log_index                           |

   |
| relay_log_info_file                       | relay-log.info

    |
| relay_log_purge                           | ON

    |
| relay_log_recovery                        | OFF

   |
| relay_log_space_limit                     | 0

   |
| slow_query_log                            | OFF

   |
| slow_query_log_file                       | pdone-prod-slow.log

   |
| sql_log_bin                               | ON

    |
| sql_log_off                               | OFF

   |
| sync_binlog                               | 0

   |
| sync_relay_log                            | 0

   |
| sync_relay_log_info                       | 0

   |
+-------------------------------------------+--------------------------------------------------------------------------------------------------------------+
54 rows in set (0.01 sec)

I have tried putting same config at `[mariadb]` and `[mariadb-5.5]` and
result is the same.

Why changes are not working? I have restarted MariaDB (mysql) service
several times and even I have restarted the whole server. Seems like
MariaDB is not reading those values, any advice?