1、先卸载当前系统中已安装的mariadb
rpm -qa | grep mariadb
rpm -e --nodeps 文件名
2、安装mysql依赖包
yum install gcc gcc-c++ openssl openssl-devel libaio libaio-devel ncurses ncurses-devel
3、下载mysql
wget https://mirrors.tuna.tsinghua.edu.cn/mysql/downloads/MySQL-8.0/mysql-8.0.16-el7-x86_64.tar.gz
4、解压mysql压缩包,创建mysql目录
tar xf mysql-8.0.15-el7-x86_64.tar.gz -C /application/
mv mysql-8.0.15-el7-x86_64/ mysql
cd mysql
mkdir data ----创建数据库文件目录
mkdir logs ----创建日志目录
/application/mysql/logs/error.log 创建日志
5、创建mysql虚拟用户和组
useradd -s /sbin/nologin -M mysql
#groupadd mysql #添加用户组
#useradd -r -g mysql mysql #创建mysql用户,并添加到mysql用户组
chown -R mysql.mysql /application/mysql
6、配置/etc/my.cnf
[mysqld]
basedir=/application/mysql
datadir=/application/mysql/data
port=3306
socket=/tmp/mysql.sock
pid-file=/application/mysql/python.pid
log-error=/application/mysql/logs/error.log
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
character_set_server = utf8
[client]
default-character-set = utf8
7、配置环境变量
echo "export PATH=$PATH:/application/mysql/bin" >> /etc/profile
source /etc/profile
8、初始化数据库
./bin/mysqld --initialize --user=mysql --basedir=/application/mysql/ --datadir=/application/mysql/data
初始化完成后,会自动为root帐户生成一个初始密码,要记录下来
9、制作启动文件
cp /application/mysql/support-files/mysql.server /etc/init.d/mysqld
sed -i 's#/usr/local/mysql#/application/mysql#g' /application/mysql/bin/mysqld_safe /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
10.启动mysql服务
/etc/init.d/mysqld start
停止mysql服务
/etc/init.d/mysqld stop
11.改密码
alter user root@'localhost' identified by '123456';
12.创建远程连接帐号
create user root@'%' identified by '21345';
grant all on *.* to root@'%' with grant option;
flush privileges;