#!/bin/bash
set -e

echo "=== 检查 mysql-server 包是否可用 ==="
apt-cache policy mysql-server 2>&1 | head -5

echo "=== 安装 mysql-server ==="
export DEBIAN_FRONTEND=noninteractive
apt-get install -y mysql-server 2>&1 | tail -30

echo "=== 检查安装结果 ==="
which mysql mysqld 2>&1 || echo "MYSQL_NOT_FOUND"
dpkg -l 2>/dev/null | grep -E 'mysql-server|mysql-common' | head

echo "=== 启动 mysql ==="
systemctl start mysql 2>&1 || true
sleep 3
systemctl is-active mysql 2>&1