查看版本

# cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) 12 12

安装mysql

# yum install mysql # yum install mysql-devel 安装完，会出现这样的报错

MariaDB的目的是完全兼容MySQL，包括API和命令行，使之能轻松成为MySQL的代替品。在存储引擎方面，10.0.9版起使用XtraDB（名称代号为Aria）来代替MySQL的InnoDB

# yum install mysql-y

# mysql

ERROR 2002 (HY000):Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'(111)

试着去启动mysql服务，仍然不行

# systemctl startmysql

Failed to issuemethod call: Unit mysql.service failed to load: No such file or directory.

# systemctl start  mysql.service

Failed to issuemethod call: Unit mysql.service failed to load: No such file or directory

# systemctl enablemysql.service

Failed to issuemethod call: Access denied

下面讲正确的步骤：

# yum installmariadb-server -y

# systemctl startmariadb.service

# systemctl enablemariadb.service

# mysql

Welcome to theMariaDB monitor.  Commands end with ; or\g.

Your MariaDBconnection id is 10

Server version:5.5.44-MariaDB MariaDB Server

Copyright (c) 2000,2015, Oracle, MariaDB Corporation Ab and others.

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

MariaDB [(none)]>

搞定!

如何设置mysql root密码

#mysql_secure_installation

创建普通用户并授权：

mysql > use mysql; ? 1 2 3 ＃创建root用户与密码并设置为从安装mysql服务的机器本地访问 mysql > grant all on root.* to  'root' @ 'localhost'               identified by  'wwc111' ; ? 1 2 #设置openscanner用户与密码，并从任何机器都可以访问mysql mysql > grant all on root.* to  'root' @ '%'  identified by  'wwc111' ; ? 1 mysql > flush privileges;             #刷新才会生效

查看版本

# cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) 12 12

安装mysql

# yum install mysql # yum install mysql-devel 安装完，会出现这样的报错

MariaDB的目的是完全兼容MySQL，包括API和命令行，使之能轻松成为MySQL的代替品。在存储引擎方面，10.0.9版起使用XtraDB（名称代号为Aria）来代替MySQL的InnoDB

# yum install mysql-y

# mysql

ERROR 2002 (HY000):Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'(111)

试着去启动mysql服务，仍然不行

# systemctl startmysql

Failed to issuemethod call: Unit mysql.service failed to load: No such file or directory.

# systemctl start  mysql.service

Failed to issuemethod call: Unit mysql.service failed to load: No such file or directory

# systemctl enablemysql.service

Failed to issuemethod call: Access denied

下面讲正确的步骤：

# yum installmariadb-server -y

# systemctl startmariadb.service

# systemctl enablemariadb.service

# mysql

Welcome to theMariaDB monitor.  Commands end with ; or\g.

Your MariaDBconnection id is 10

Server version:5.5.44-MariaDB MariaDB Server

Copyright (c) 2000,2015, Oracle, MariaDB Corporation Ab and others.

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

MariaDB [(none)]>

搞定!

如何设置mysql root密码

#mysql_secure_installation

创建普通用户并授权：

mysql > use mysql; ? 1 2 3 ＃创建root用户与密码并设置为从安装mysql服务的机器本地访问 mysql > grant all on root.* to  'root' @ 'localhost'               identified by  'wwc111' ; ? 1 2 #设置openscanner用户与密码，并从任何机器都可以访问mysql mysql > grant all on root.* to  'root' @ '%'  identified by  'wwc111' ; ? 1 mysql > flush privileges;             #刷新才会生效