CentOS 7.0 使用 yum 安装 MariaDB 与 MariaDB 的简单配置

 

1、安装MariaDB

安装命令

yum -y install mariadb mariadb-server

安装完成MariaDB，首先启动MariaDB

systemctl start mariadb

设置开机启动

systemctl enable mariadb

接下来进行MariaDB的相关简单配置

mysql_secure_installation

首先是设置密码，会提示先输入密码

Enter current password for root (enter for none):<–初次运行直接回车

设置密码

 

Set root password? [Y/n] <– 是否设置root用户密码，输入y并回车或直接回车 New password: <– 设置root用户的密码 Re-enter new password: <– 再输入一次你设置的密码

 

其他配置

Remove anonymous users? [Y/n] <– 是否删除匿名用户，回车

【删除匿名用户这步很重要，可能会出现，处理不慎会出现报错：ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'mysql'，若出现该报错，请移步：解决匿名用户问题】

Disallow root login remotely? [Y/n] <–是否禁止root远程登录,回车,

Remove test database and access to it? [Y/n] <– 是否删除test数据库，回车

Reload privilege tables now? [Y/n] <– 是否重新加载权限表，回车

初始化MariaDB完成，接下来测试登录

mysql -uroot -ppassword

完成。

 

2、配置MariaDB的字符集

文件/etc/my.cnf

vi /etc/my.cnf

在[mysqld]标签下添加

init_connect='SET collation_connection = utf8_unicode_ci' init_connect='SET NAMES utf8' character-set-server=utf8 collation-server=utf8_unicode_ci skip-character-set-client-handshake

文件/etc/my.cnf.d/client.cnf

vi /etc/my.cnf.d/client.cnf

在[client]中添加

default-character-set=utf8

文件/etc/my.cnf.d/mysql-clients.cnf

vi /etc/my.cnf.d/mysql-clients.cnf

在[mysql]中添加

default-character-set=utf8

 全部配置完成，重启mariadb

systemctl restart mariadb.service

之后进入MariaDB查看字符集

mysql> show variables like "%character%";show variables like "%collation%";

显示为

 

  +--------------------------+----------------------------+ | Variable_name            | Value                      | +--------------------------+----------------------------+ | character_set_client    | utf8                      | | character_set_connection | utf8                      | | character_set_database  | utf8                      | | character_set_filesystem | binary                    | | character_set_results    | utf8                      | | character_set_server    | utf8                      | | character_set_system    | utf8                      | | character_sets_dir      | /usr/share/mysql/charsets/ | +--------------------------+----------------------------+ 8 rows in set (0.00 sec)

 

 

+----------------------+-----------------+ | Variable_name        | Value          | +----------------------+-----------------+ | collation_connection | utf8_unicode_ci | | collation_database  | utf8_unicode_ci | | collation_server    | utf8_unicode_ci | +----------------------+-----------------+ 3 rows in set (0.00 sec)

 

字符集配置完成。

 

3、添加用户，设置权限

创建用户命令

mysql>create user username@localhost identified by 'password';

直接创建用户并授权的命令

mysql>grant all on *.* to username@localhost indentified by 'password';

授予外网登陆权限 

mysql>grant all privileges on *.* to username@'%' identified by 'password';

授予权限并且可以授权

mysql>grant all privileges on *.* to username@'hostname' identified by 'password' with grant option;

简单的用户和权限配置基本就这样了。

若要只授予部分权限，只需把all privileges或者all改为select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file其中一部分。

 

[root@lsgxeva ~]# cat /etc/my.cnf
# Example MariaDB config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MariaDB plays
# an important part, or systems up to 128M where MariaDB is used together with
# other programs (such as a web server)
#
# MariaDB programs look for option files in a set of
# locations which depend on the deployment platform.
# You can copy this option file to one of those
# locations. For information about these locations, do:
# 'my_print_defaults --help' and see what is printed under
# Default options are read from the following files in the given order:
# More information at: http://dev.mysql.com/doc/mysql/en/option-files.html
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.

# The following options will be passed to all MariaDB clients
[client]
#password	= your_password
port		= 3306
socket		= /var/lib/mysql/mysql.sock

default-character-set=utf8

# Here follows entries for some specific programs

# The MariaDB server
[mysqld]
port		= 3306
socket		= /var/lib/mysql/mysql.sock
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake

# Point the following paths to different dedicated disks
#tmpdir		= /tmp/

# 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

# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin

# binary logging format - mixed recommended
binlog_format=mixed

# 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

# 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
# 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

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

 

[root@lsgxeva ~]# cat /etc/my.cnf.d/
client.cnf         mysql-clients.cnf  server.cnf
[root@lsgxeva ~]# cat /etc/my.cnf.d/mysql-clients.cnf
#
# These groups are read by MariaDB command-line tools
# Use it for options that affect only one utility
#

[mysql]
default-character-set=utf8

[mysql_upgrade]

[mysqladmin]

[mysqlbinlog]

[mysqlcheck]

[mysqldump]

[mysqlimport]

[mysqlshow]

[mysqlslap]