编写安装mysql脚本

#!/bin/bash

# 检查是否已安装MySQL
if rpm -qa | grep -i mysql; then
    echo "MySQL已安装"
    exit 0
fi

# 下载MySQL安装包
wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm

# 安装MySQL安装包
rpm -ivh mysql80-community-release-el7-3.noarch.rpm

# 安装MySQL服务器
yum install -y mysql-community-server

# 启动MySQL服务
systemctl start mysqld

# 设置MySQL开机自启动
systemctl enable mysqld

# 获取临时密码
temp_password=$(grep 'temporary password' /var/log/mysqld.log | awk '{print $NF}')

# 登录MySQL并修改密码
mysql -u root -p$temp_password << EOF
ALTER USER 'root'@'localhost' IDENTIFIED BY 'your_new_password';
FLUSH PRIVILEGES;
EOF

echo "MySQL安装完成，请使用新密码登录：your_new_password"