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Red Hat 8.1 部署MySQL 5.7

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一、关闭防火墙和Selinux

systemctl stop firewalld
systemctl disable firewalld
## 关闭 SELINUX=disabled
vim /etc/sysconfig/selinux# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these three values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted修改配置文件需要重启生效， 为了提高效率不重启系统  setenforce 0 临时挂壁
[root@localhost ~]# setenforce 0
[root@localhost ~]# getenforce 
Permissive

二 、配置 YUM 源

根据情况，选择本地源或者网络源

三、安装依赖包

yum install libaio
yum -y install perl perl-devel
yum install libncurses*
yum -y install autoconf
yum -y install numactl.x86_64

四、安装 MySQL

通过网盘分享的文件：mysql-5.7.30-linux-glibc2.12-x86_64.tar.gz
链接: https://pan.baidu.com/s/1Cx0gJXj0a37_F2a8Jdh73A 提取码: vg45

rz mysql-5.7.30-linux-glibc2.12-x86_64.tar.gz

4.1 创建安装目录并解压文件到目录中

mkdir -p /usr/local/mysqlsoft
tar -zxvf mysql-5.7.30-linux-glibc2.12-x86_64.tar.gz -C /usr/local/mysqlsoft

4.2 创建快捷方式

mkdir -p /usr/local/mysql57ln -s /usr/local/mysqlsoft/mysql-5.7.30-linux-glibc2.12-x86_64 /usr/local/mysql57/mysql5730

4.3 创建用户组

groupadd mysql
useradd -r -g mysql mysql
chown -R mysql:mysql /usr/local/mysqlsoft
echo “mysql” | passwd --stdin mysql

4.4 初始化

chown -R mysql.mysql /usr/local/mysql57
/usr/local/mysql57/mysql5730/bin/mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql57/mysql5730 --datadir=/usr/local/mysql57/mysql5730/data

4.5 配置环境变量

echo "export PATH=$PATH:/usr/local/mysql57/mysql5730/bin" >> /root/.bashrc
source /root/.bashrc

五、 启动数据库

5.1 后台启动，并登陆数据库

mysqld_safe &
mysql -uroot -p

5.2 新增远程用户

select user,host,authentication_string from mysql.user; 
grant all on *.* to mysql@'%' identified by 'mysql' with grant option;
flush privileges;

5.3 修改本地用户密码

set password for root@'localhost'=password('root');
flush privileges;

5.4 关闭数据库

mysqladmin -uroot -proot shutdown