1、环境说明
操作系统：centos7.5
MySQL版本：mysql5.6
2、具体步骤
1.官网(https://dev.mysql.com/downloads/mysql/)下载mysql5.6.46安装包
wget https://cdn.mysql.com//Downloads/MySQL-5.6/mysql-5.6.46-linux-glibc2.12-x86_64.tar.gz
2.安装包解压
tar -zxvf mysql-5.6.46-linux-glibc2.12-x86_64.tar.gz
3.目录重命名
mv mysql-5.6.46-linux-glibc2.12-x86_64 /usr/local/mysql5.6
4.创建mysql用户和组
groupadd mysql
useradd -r -g mysql mysql -d /usr/local/mysql5.6
5.修改目录权限
chown -R mysql:mysql /usr/local/mysql5.6
6.安装数据库
切换到mysql: su mysql
执行：/usr/local/mysql5.6/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql5.6 --datadir=/usr/local/mysql5.6/data
7.复制mysql配置文件
cd /usr/local/mysql5.6/support-files
cp my-default.cnf /etc/my.cnf
8.添加系统服务
cp mysql.server /etc/init.d/mysql
chkconfig mysql on
9.添加环境变量
vi /etc/profile
在最下面添加
export MYSQL_HOME=/usr/local/mysql5.6
export PATH=$PATH:$MYSQL_HOME/bin
保存退出后，执行生效代码
source /etc/profile
10.设置默认端口
vi /etc/my.cnf
[mysqld]
basedir=/usr/local/mysql5.6
datadir=/usr/local/mysql5.6/data
port=3306
server_id=1
socket=/tmp/mysql.sock
11.编辑mysql启动脚本
vi /etc/init.d/mysql
basedir=/usr/local/mysql5.6
datadir=/usr/local/mysql5.6/data
12.启动mysql
service mysql start
13.设置root密码
mysqladmin -u root password '123456'
14.允许所有外部链接访问（可选）
mysql -u root -p
mysql命令行输入
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
FLUSH PRIVILEGES;
