安装MySQL5.7
1.下载安装包
wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz
2.解压
sudo tar -zxvf mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz
3.移到指定位置
sudo mv mysql-5.7.38-linux-glibc2.12-x86_64 /usr/local/mysql5.7
3.添加用户
sudo groupadd mysql
sudo useradd -r -g mysql mysql
4.配置目录
sudo mkdir -p /data/db/mysql
sudo chown mysql:mysql -R /data/db/mysql/
5.配置my.cnf文件
sudo vi /etc/my.cnf
参考内容
6.初始化数据库
sudo /usr/local/mysql5.7/bin/mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql5.7/ --datadir=/data/db/mysql --user=mysql --initialize
如果发生如下报错
执行:
yum install libaio 或 apt-get install libaio-dev
sudo cp /usr/local/mysql5.7/support-files/mysql.server /etc/init.d/mysql sudo mkdir /var/log/mariadb //创建一个空文件 sudo vi /var/log/mariadb/mariadb.log sudo chown mysql:mysql -R /var/log/mariadb sudo service mysql start
如果碰到如下错误
解决:
mkdir /var/lib/mysql chmod 777 /var/lib/mysql
查看默认密码
cat /data/logs/mysql.err
修改默认密码
mysql -u root -p SET PASSWORD = PASSWORD('12345678'); ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER; FLUSH PRIVILEGES;
开启远程连接
use mysql; update user set host = '%' where user = 'root'; FLUSH PRIVILEGES;