linux之mysql安装

可私信我直接获取安装包

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz

 tar -zxvf mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz

移动目录到指定位置 使用命令

mv mysql-5.7.24-linux-glibc2.12-x86_64 /usr/local/mysql

在/usr/local/mysql目录下创建data目录(一定要在这个目录中创建！！)
使用命令

mkdir /usr/local/mysql/data

chown -R mysql:mysql /usr/local/mysql
chmod -R 755 /usr/local/mysql

groupadd mysql
useradd -r -g mysql mysql

然后再执行即可

cd  /usr/local/mysql/bin

6.2:开始进行编译和初始化。

./mysqld --initialize --user=mysql --datadir=/usr/local/mysql/data --basedir=/usr/local/mysql

到这一步就算是安装好了！！！但是，你还不能访问它！

[mysqld]datadir=/usr/local/mysql/data
port = 3306
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
symbolic-links=0
max_connections=400
innodb_file_per_table=1
lower_case_table_names=1
character_set_server=utf8

/usr/local/mysql/support-files/mysql.server start

如出现如下的错误信息
Starting MySQL.2022-06-22T06:59:20.270321Z mysqld_safe error: log-error set to ‘/var/log/mariadb/mariadb.log’, however file don’t exists. Create writable for user ‘mysql’.
ERROR! The server quit without updating PID file (/usr/local/mysql/data/VM-20-2-centos.pid).
需要卸载自带的mariadb数据库
使用如下命令查看

yum list installed |grep mariadb

卸载它 使用命令

yum remove mariadb-libs.x86_64

重新启动mysql服务

ln -s /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql 
ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
service mysql restart

mysql -u root -p

使用如下命令修改密码

复制下面的命令修改密码：（这里我改的是123456，你们随意！）set password for root@localhost=password('Wyy123456');

use mysql;
update user set user.Host='%' where user.User='root';
flush privileges;

最后使用数据库的客服端工具进行链接 如下

常用的命令