以Centos为例讲解MySQL在Linux中的部署

rpm -qa|grep mariadb
rpm -e mariadb-libs-5.5.68-1.el7.x86_64 --nodeps

cd /usr
mkdir server
cd server
mkdir mysql
tar xvf mysql-5.7.40-1.el7.x86_64.rpm-bundle_2.tar -C mysql

cd /usr/server/mysql/
yum -y install libaio
yum -y install libncurses*
yum -y install perl perl-devel

rpm -ivh mysql-community-common-5.7.40-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.40-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.40-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.40-1.el7.x86_64.rpm

systemctl start mysqld.service
service mysqld restart 重启mysql服务
#开启后查看进程状态
ps -ef|grep mysql
#查看生产的临时root密码
cat /var/log/mysqld.log|grep password

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

mysql -u root -p

# 输入临时密码登录后 首先需要重置密码才能进行CRUD
# 修改密码策略 这样密码就可以设置的比较简单
set global validate_password_policy=0;
set global validate_password_length=1;
set password=password('123456');

# 输入远程连接权限
grant all privileges on *.* to 'root' @'%' identified by '123456';
# 刷新
flush privileges;

exit #退出MySQL客户端
systemctl stop mysqld 暂停mysql服务
systemctl status mysqld 查看mysql服务
systemctl start mysqld 开启mysql服务
systemctl enable mysqld 设置开机自启

#防火墙
firewall-cmd --state
systemctl stop firewalld.service 停止firewall
systemctl disable firewalld.service 禁止开机自启