合并代码

test_connection.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+ 
+echo "=== Docker 网络诊断 ==="
+echo ""
+ 
+echo "1. Docker0 网桥 IP:"
+ip addr show docker0 2>/dev/null | grep -oP '(?<=inet\s)\d+(\.\d+){3}' || echo "❌ docker0 不存在"
+echo ""
+ 
+echo "2. MySQL 监听状态:"
+sudo netstat -tlnp | grep 3306 || echo "❌ MySQL 未运行或未监听 3306"
+echo ""
+ 
+echo "3. MySQL 用户权限:"
+mysql -u root -p -e "SELECT user, host FROM mysql.user WHERE user='railway';" 2>/dev/null || echo "❌ 无法查询（需要 root 密码）"
+echo ""
+ 
+echo "4. 测试从容器连接 MySQL:"
+DOCKER0_IP=$(ip addr show docker0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}')
+if [ ! -z "$DOCKER0_IP" ]; then
+    docker run --rm mysql:8.0 mysql -h $DOCKER0_IP -u railway -p'Railway01.' -e "SELECT 'OK' as status;" 2>&1
+else
+    echo "❌ 无法获取 docker0 IP"
+fi
+ 
+echo ""
+echo "=== 诊断完成 ==="