{
     "source":"test:test@(127.0.0.1:3306)/test_0",
     "dest":"test:test@(127.0.0.1:3306)/test_1",
     "alter_ignore":{
        "tb1*":{
            "column":["aaa","a*"],
            "index":["aa"],
            "foreign":[]
        }
     },
     //  tables: table to check schema,default is all.eg :["order_*","goods"]
     "tables":[],
     "email":{
          "send_mail":false,
         "smtp_host":"smtp.163.com:25",
         "from":"xxx@163.com",
         "password":"xxx",
         "to":"xxx@163.com"
     }
}