CentOS7.6安装MYSQL8.0的步骤详解

1、一般CentOS默认安装了mariadb，所以先查看是否安装mariadb，如果安装就需要先卸载mariadb

rpm -qa|grep mariadbrpm -e mariadb-libs --nodeps

cd /cd usr/localmkdir mysql

cd mysqlwget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.16-2.el7.x86_64.rpm-bundle.tar

tar -xvf mysql-8.0.16-2.el7.x86_64.rpm-bundle.tar

rpm -ivh mysql-community-common-8.0.16-2.el7.x86_64.rpm --nodeps --forcerpm -ivh mysql-community-libs-8.0.16-2.el7.x86_64.rpm --nodeps --forcerpm -ivh mysql-community-client-8.0.16-2.el7.x86_64.rpm --nodeps --forcerpm -ivh mysql-community-server-8.0.16-2.el7.x86_64.rpm --nodeps --force

mysqld --initialize; chown mysql:mysql /var/lib/mysql -R;systemctl start mysqld.service;systemctl enable mysqld;

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如果执行systemctl start mysqld.service; 出现以下报错，先执行tail -f /var/log/mysqld.log查看错误日志

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如果错误日志如下，执行cd /var/lib/mysql，执行rm -rf *删除所有文件，再执行systemctl start mysqld.service;

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7、查看数据库初始化密码

cat /var/log/mysqld.log | grep password

mysql -uroot -p

 ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'xxxxx';

exit; mysql -uroot -p

create user 'root'@'%' identified with mysql_native_password by 'xxxxx';grant all privileges on *.* to 'root'@'%' with grant option;flush privileges;

总结

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