0. 下载安装包

https://dev.mysql.com/




下载后用lrzsz或winscp将安装包上传至服务器

1. 解压安装

yum install libncurses* -y
tar xf mysql-5.7.34-el7-x86_64.tar.gz -C /usr/local/
ln -sf /usr/local/mysql-5.7.34-el7-x86_64 /usr/local/mysql
useradd -u 306 mysql -s /sbin/nologin
mkdir /data
chown mysql.mysql /data
chown mysql.mysql -R /usr/local/mysql

2. 初始化数据库文件

/usr/local/mysql/bin/mysqld --initialize --user=mysql --datadir=/data

初始密码为 ;oUm-z9iPgc;

3. 修改配置文件

cat > /etc/my.cnf<<EOF
[mysqld]
basedir=/usr/local/mysql
datadir=/data
port=3306
socket=/usr/local/mysql/mysql.sock
pid-file=/usr/local/mysql/mysql.pid
EOF

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld

vi /etc/init.d/mysqld

修改一下选项

basedir=/usr/local/mysql
datadir=/data

4. 启动Mysql服务

chkconfig --add mysqld
systemctl start mysqld

5. 进入Mysql

/usr/local/mysql/bin/mysql -uroot -p";oUm-z9iPgc;" --pid-file=/usr/local/mysql/mysql.pid

6. 重置root密码

alter user 'root'@'localhost' identified by '123456';

7. 处理一些报错

7.1 错误1:bash: mysql: command not found…

echo ‘PATH=/usr/local/mysql/bin:$PATH’ > /etc/profile.d/mysql.sh

7.2 错误2:ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’

vi /etc/my.cnf
追加以下内容
[client]
socket=/usr/local/mysql/mysql.sock