主机不允许连接到此MySQL服务器(从VM)

Question

我正在尝试从一个虚拟的Raspberry PI连接到mysql，这是我在VirtualBoxVM中运行的。

使用Python脚本：

import mysql.connector

mydb = mysql.connector.connect(
host="MBP",
user="PI-2",
passwd="",
database="temperatureData"
)

mycursor = mydb.cursor()

sql = "INSERT INTO temperature (date, temp_celsius, temp_farenheit) 
VALUES (%s, %s, %s)"
val = ("2019-01-14", "20")

mycursor.execute(sql, val)

mydb.commit()

print(mycursor.rowcount, "record inserted.")

但由于错误而失败：

1130: Host 'MBP' is not allowed to connect to this MySQL server

在Mysql (在我的Macbook上)中，我通过以下方式设置了一个用户：

CREATE USER 'PI-2'@'127.0.0.1' IDENTIFIED BY 'PI-2';
GRANT ALL PRIVILEGES ON *.* TO 'PI-2'@'127.0.0.1' WITH GRANT OPTION;

(使用127.0.0.1，因为我在VM中使用NAT -正如这里提到的：how to get the ipaddress of a virtual box running on local machine)

my.cnf文件：

# Default Homebrew MySQL server config
[mysqld]

# Only allow connections from localhost

# bind-address = 127.0.0.1

bind-address = 0.0.0.0

更新：

ifconfig对MBP的输出：

lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
options=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP>
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
[ ... ]

关于VM：

eth0      Link encap:Ethernet  HWaddr 08:00:27:41:cb:b4
      inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
      inet6 addr: fe80::ef2d:bd28:6834:9191/64 Scope:Link


lo        Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:65536  Metric:1

Answer 1

授予此命令的特权：GRANT ALL PRIVILEGES ON *.* TO 'PI-2'@'MBP' WITH GRANT OPTION;

它允许MySQL接受来自名为MBP的主机的连接。

https://dev.mysql.com/doc/refman/5.6/en/grant.html#grant-accounts-passwords