MySQL is not running, but lock file (/ var / lock / subsys / mysql) the existence of this problem exists
generally determined by three reasons:
1: configuration files enough authority, all of the files related to the configuration of all the changes for the mysql user rights
2: pid mysql is not running, rm -rf / var / lock / subsys / mysql, to re-create a new default pid file permissions to 660
3: my.cnf configuration file errors, we need to re-edit

Can not open and lock privilege tables: Table 'mysql.user' does not exist
The problem is due myql storage file system comes with no database can be entered or the database mysql_install_db
the path to re-edit the default / directory var / lib / mysql is

posted below my own mariadb configuration (from the database)

[client]
port             = 3306
socket           = /var/lib/mysql/mysql.sock
default-character-set = utf8

[mysqld_safe]
socket           = /var/lib/mysql/mysql.sock
nice             = 0

[mysqld]
user   = mysql
pid-file   = /var/run/mysqld/mysqld.pid
socket   = / var / lib / mysql /mysql.sock
log_error   =   /var/log/mysqld/error.log
port   = 3306
basedir   = / usr
datadir   = / data
tmpdir   = / tmp
lc-messages-dir = / usr / share / mysql
skip-external-locking
bind-address = 0.0.0.0
skip- name-resolve
lower_case_table_names = 1
max_connections = 1000
connect_timeout = 15
wait_timeout = 600
max_allowed_packet       = 16M
thread_cache_size       = 128
sort_buffer_size         = 16M
bulk_insert_buffer_size = 16M
tmp_table_size           = 128M
max_heap_table_size     = 128M
query_cache_limit     = 0
query_cache_size     = 0

long_query_time = 10

log_bin                 = / var / log / mysqld / mysql-bin
log_bin_index           = / var / log / mysqld / mysql-bin.index

expire_logs_days         = 10
max_binlog_size         = 100M

binlog_ignore_db = mysql
server_id = 5005
log_slave_updates = 1
slave_skip_errors = all
# auto_increment_offset = 1
### auto_increment_increment = 2
# binlog_format = row
#
##
## replicate-do-db =
#key_buffer_size = 1024M
##
#
# collation-server = utf8_general_ci
# init-connect = 'SET NAMES utf8'
# character-set-server = utf8
#
# default_storage_engine   = InnoDB
# innodb_buffer_pool_size = 30720M
# innodb_log_buffer_size   = 32M
# innodb_file_per_table   = 1
# innodb_open_files       = 400
# innodb_io_capacity       = 400
# innodb_flush_method     = O_DIRECT
#innodb_flush_log_at_trx_commit = 2
# innodb_log_file_size     = 512M
#
# key_buffer               = 16M
# thread_stack             = 192K
# myisam-recover         = BACKUP
#
# [mysqldump]
#quick
# quote-names
# max_allowed_packet       = 16M
#
# [isamchk]
# key_buffer               = 16M
##