centos7.6离线安装mysql-5.7.28

1、查看是否安装mysql

rpm -qa | grep mysql

2、命令查看 mariadb 的安装包

rpm -qa | grep mariadb

存在，则卸载mariadb：

• rpm -e mariadb-libs-5.5.60-1.el7_5.x86_64 --nodeps

3、创建安装文件夹

mkdir /usr/local/mysql-5.7.28

4、移动到安装路径下

cp mysql-5.7.28-1.el7.x86_64.rpm-bundle.tar  /usr/local/mysql-5.7.28

5、解压

tar -xvf mysql-5.7.28-1.el7.x86_64.rpm-bundle.tar

（1）安装common

rpm -ivh mysql-community-common-5.7.28-1.el7.x86_64.rpm --nodeps --force

（2）安装 libs

rpm -ivh mysql-community-libs-5.7.28-1.el7.x86_64.rpm --nodeps --force

（3）安装 client

rpm -ivh mysql-community-client-5.7.28-1.el7.x86_64.rpm --nodeps --force

（4）安装 server

rpm -ivh mysql-community-server-5.7.28-1.el7.x86_64.rpm --nodeps --force

6、查看 mysql 的安装包

rpm -qa | grep mysql

7、初始化及相关配置

mysqld --initialize；

如果报错：

• mysqld: error while loading shared libraries: libnuma.so.1: cannot
  open shared object file: No such file or directory

解決：文件下载地址：http://mirror.centos.org/centos/6/os/x86_64/Packages/numactl-2.0.9-2.el6.x86_64.rpm

chmod +x *.rpm

rpm -ivh numactl-2.0.9-2.el6.x86_64.rpm

解决之后继续执行：

mysqld --initialize;

chown mysql:mysql /var/lib/mysql -R;

systemctl start mysqld.service;

systemctl  enable mysqld;

8、初始密码查询

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

连接数据库

mysql -u root -p

9、改密

报错：

• You must reset your password using ALTER USER statement before
  executing this statement.

解决：

ALTER USER USER() IDENTIFIED BY 'root123456';

10、修改用户名（可选操作）

修改用户名

use mysql;

update user set user="lx" where user="root";

flush privileges;

改密：

ALTER USER 'lx'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root123456';

flush privileges;

11、远程访问的授权

create user 'lx'@'%' identified with mysql_native_password by 'root123456';

grant all privileges on *.* to 'lx'@'%' with grant option;

flush privileges;

至此完成。