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MariaDB [(none)]> CREATE USER 'moi'@'%' IDENTIFIED BY 'xxxxx';

Query OK, 0 rows affected (0.00 sec)



MariaDB [(none)]> SELECT host, user FROM mysql.user;

+-----------+------+

| host | user |

+-----------+------+

| % | moi |

| % | root |

| 127.0.0.1 | root |

| ::1 | root |

| localhost | |

| localhost | root |

+-----------+------+

6 rows in set (0.00 sec)



MariaDB [(none)]> [block]

#2002 Connexion au serveur MySQL non permise

[laurent@localhost ~]$ cat /etc/mysql/my.cnf

cat: /etc/mysql/my.cnf: Aucun fichier ou dossier de ce type

[laurent@localhost ~]$

[root@localhost laurent]# cd /etc

[root@localhost etc]# find . -iname my.cnf

./my.cnf

[root@localhost etc]#

[root@localhost etc]# cat my.cnf

# A generic my.cnf file based on /usr/share/mysql/my-medium.cnf

#

# This is for a system with little memory (32M - 64M) where MySQL plays

# an important part, or systems up to 128M where MySQL is used together with

# other programs (such as a web server)

#



# The following options will be passed to all MySQL clients

[client]

user = root

#password = your_password

port = 3306

socket = /var/lib/mysql/mysql.sock



# Here follows entries for some specific programs



# The MySQL server

[mysqld]

user = mysql

datadir = /var/lib/mysql

port = 3306

socket = /var/lib/mysql/mysql.sock

pid-file = /var/run/mysqld/mysqld.pid

skip-external-locking

key_buffer = 16M

max_allowed_packet = 32M

table_cache = 64

sort_buffer_size = 512K

net_buffer_length = 8K

read_buffer_size = 256K

read_rnd_buffer_size = 512K

myisam_sort_buffer_size = 8M

default-storage-engine = InnoDB

;collation_server = utf8_unicode_ci

;character_set_server = utf8



# plugins

plugin_dir=/usr/lib64/mysql/plugin

plugin-load=ha_archive.so;ha_blackhole.so;ha_federatedx.so



# activate the federated storage engine

federated



# http://dev.mysql.com/doc/refman/5.5/en/replication-semisync.html

;rpl_semi_sync_master=semisync_master.so

;rpl_semi_sync_slave=semisync_slave.so



# Others options for Semisynchronous Replication

;rpl_semi_sync_master_enabled=1

;rpl_semi_sync_master_timeout=10

;rpl_semi_sync_slave_enabled=1



# Don't listen on a TCP/IP port at all. This can be a security enhancement,

# if all processes that need to connect to mysqld run on the same host.

# All interaction with mysqld must be made via Unix sockets or named pipes.

# Note that using this option without enabling named pipes on Windows

# (via the "enable-named-pipe" option) will render mysqld useless!

#

skip-networking



# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0



# Replication Master Server (default)

# binary logging is required for replication

#log-bin=mysql-bin



# required unique id between 1 and 2^32 - 1

# defaults to 1 if master-host is not set

# but will not function as a master if omitted

server-id = 1



# Replication Slave (comment out master section to use this)

#

# To configure this host as a replication slave, you can choose between

# two methods :

#

# 1) Use the CHANGE MASTER TO command (fully described in our manual) -

# the syntax is:

#

# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,

# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;

#

# where you replace <host>, <user>, <password> by quoted strings and

# <port> by the master's port number (3306 by default).

#

# Example:

#

# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,

# MASTER_USER='joe', MASTER_PASSWORD='secret';

#

# OR

#

# 2) Set the variables below. However, in case you choose this method, then

# start replication for the first time (even unsuccessfully, for example

# if you mistyped the password in master-password and the slave fails to

# connect), the slave will create a master.info file, and any later

# change in this file to the variables' values below will be ignored and

# overridden by the content of the master.info file, unless you shutdown

# the slave server, delete master.info and restart the slaver server.

# For that reason, you may want to leave the lines below untouched

# (commented) and instead use CHANGE MASTER TO (see above)

#

# required unique id between 2 and 2^32 - 1

# (and different from the master)

# defaults to 2 if master-host is set

# but will not function as a slave if omitted

#server-id = 2

#

# The replication master for this slave - required

#master-host = <hostname>

#

# The username the slave will use for authentication when connecting

# to the master - required

#master-user = <username>

#

# The password the slave will authenticate with when connecting to

# the master - required

#master-password = <password>

#

# The port the master is listening on.

# optional - defaults to 3306

#master-port = <port>

#

# binary logging - not required for slaves, but recommended

#log-bin=mysql-bin



# Point the following paths to different dedicated disks

tmpdir = /var/tmp

#log-update = /path-to-dedicated-directory/hostname



# Uncomment the following if you are using BDB tables

#bdb_cache_size = 4M

#bdb_max_lock = 10000



# Uncomment the following if you are using InnoDB tables

#innodb_data_home_dir = /var/lib/mysql/

#innodb_data_file_path = ibdata1:10M:autoextend

#innodb_log_group_home_dir = /var/lib/mysql/

#innodb_log_arch_dir = /var/lib/mysql/

# You can set .._buffer_pool_size up to 50 - 80 %

# of RAM but beware of setting memory usage too high

#innodb_buffer_pool_size = 16M

#innodb_additional_mem_pool_size = 2M

# Set .._log_file_size to 25 % of buffer pool size

#innodb_log_file_size = 5M

#innodb_log_buffer_size = 8M

#innodb_flush_log_at_trx_commit = 1

#innodb_lock_wait_timeout = 50



#bind-address=192.168.100.1



[mysqldump]

quick

max_allowed_packet = 16M



[mysql]

no-auto-rehash

# Remove the next comment character if you are not familiar with SQL

#safe-updates

default-character-set = utf8



[isamchk]

key_buffer = 20M

sort_buffer_size = 20M

read_buffer = 2M

write_buffer = 2M



[myisamchk]

key_buffer = 20M

sort_buffer_size = 20M

read_buffer = 2M

write_buffer = 2M



[mysqlhotcopy]

interactive-timeout



[mysql.server]

user=mysql

basedir=/usr



[mysqld_safe]

log-error=/var/log/mysqld/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid



[root@localhost etc]#

#2002 Connexion au serveur MySQL non permise

[root@localhost etc]# mysql -u moi -xxxxx

mysql: unknown option '-x'

[root@localhost etc]#

[root@localhost etc]# mysql -u moi xxxxx

ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'xxxxxx'

[root@localhost etc]#

[root@localhost etc]# mysql -u moi -pxxxxxxxxx

ERROR 1045 (28000): Access denied for user 'moi'@'localhost' (using password: YES)

[root@localhost etc]#

[root@localhost etc]# mysql -u moi

Welcome to the MariaDB monitor. Commands end with ; or g.

Your MariaDB connection id is 3

Server version: 5.5.23-MariaDB Mageia - MariaDB Community Edition (GPL)



This software comes with ABSOLUTELY NO WARRANTY. This is free software,

and you are welcome to modify and redistribute it under the GPL v2 license



Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.



MariaDB [(none)]> SELECT CURRENT_USER();

+----------------+

| CURRENT_USER() |

+----------------+

| @localhost |

+----------------+

1 row in set (0.00 sec)



MariaDB [(none)]>