本地下载MySQL 8.0.37并上传服务器Centos7.9安装的完整指南

# 停止MySQL相关服务
systemctl stop mysqld
systemctl stop mariadb

# 卸载现有MySQL/MariaDB包
rpm -qa | grep -i mysql | xargs rpm -e --nodeps 2>/dev/null
rpm -qa | grep mariadb | xargs rpm -e --nodeps 2>/dev/null

# 清理残留文件和目录
rm -rf /var/lib/mysql
rm -rf /etc/my.cnf
rm -rf /etc/my.cnf.d
rm -rf /var/log/mysqld.log
rm -rf /usr/share/mysql
rm -rf /usr/lib64/mysql

# 清理yum缓存
yum clean all

scp /本地路径/mysql-8.0.37-1.el7.x86_64.rpm-bundle.tar root@服务器IP:/tmp/

yum install -y libaio numactl

cd /tmp
tar -xvf mysql-8.0.37-1.el7.x86_64.rpm-bundle.tar

# 1. 安装公共文件
yum install -y mysql-community-common-8.0.37-1.el7.x86_64.rpm

# 2. 安装客户端插件（这是关键依赖包）
yum install -y mysql-community-client-plugins-8.0.37-1.el7.x86_64.rpm

# 3. 安装共享库
yum install -y mysql-community-libs-8.0.37-1.el7.x86_64.rpm

# 4. 安装ICU数据文件
yum install -y mysql-community-icu-data-files-8.0.37-1.el7.x86_64.rpm

# 5. 安装客户端工具
yum install -y mysql-community-client-8.0.37-1.el7.x86_64.rpm

# 6. 安装MySQL服务器
yum install -y mysql-community-server-8.0.37-1.el7.x86_64.rpm

rpm -ivh mysql-community-*.rpm --nodeps --force

systemctl start mysqld
systemctl enable mysqld
systemctl status mysqld

grep 'temporary password' /var/log/mysqld.log

# 使用临时密码登录
mysql -u root -p

# 在MySQL中执行以下命令：
ALTER USER 'root'@'localhost' IDENTIFIED BY 'YourStrongPassword123!';
FLUSH PRIVILEGES;
EXIT;

mysql -u root -p

-- 创建允许远程连接的root用户
CREATE USER 'root'@'%' IDENTIFIED BY 'YourStrongPassword123!';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;

-- 或者修改现有root用户
ALTER USER 'root'@'localhost' IDENTIFIED BY 'YourStrongPassword123!';
RENAME USER 'root'@'localhost' TO 'root'@'%';

FLUSH PRIVILEGES;
EXIT;

# 备份原配置
cp /etc/my.cnf /etc/my.cnf.bak

# 添加远程访问配置
cat >> /etc/my.cnf << EOF

# 允许远程连接
bind-address = 0.0.0.0

# 字符集设置
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci

# 默认认证插件（兼容旧客户端）
default_authentication_plugin = mysql_native_password
EOF

firewall-cmd --permanent --add-port=3306/tcp
firewall-cmd --reload

# 检查SELinux状态
getenforce

# 如为Enforcing模式，可临时设置为Permissive
setenforce 0

# 或永久禁用（编辑/etc/selinux/config）
sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

systemctl restart mysqld

# 检查版本
mysql --version

# 本地连接测试
mysql -u root -p -e "SELECT version();"

# 检查用户权限
mysql -u root -p -e "SELECT user, host FROM mysql.user;"

# 检查端口监听
netstat -tlnp | grep 3306

mysql -h 服务器IP -u root -p -e "SELECT '远程连接成功' as status;"

# 运行安全配置脚本
mysql_secure_installation

# 停止MySQL
systemctl stop mysqld

# 跳过权限检查启动
mysqld_safe --skip-grant-tables &

# 修改密码
mysql -u root
UPDATE mysql.user SET authentication_string='' WHERE User='root';
FLUSH PRIVILEGES;
EXIT;

# 重启MySQL
systemctl restart mysqld