我用 Vagrant 安装了一个新的 VirtualBox 机器，并在该 VM 中安装了 Mysql Server。如何连接到 vm 外的该服务器？我已经转发了 Vagrantfile 的 3306 端口，但是当我尝试连接到 mysql 服务器时，它会回复错误：'reading initial communication packet'
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 0
确保 MySQL 绑定到 0.0.0.0 而不是 127.0.0.1 否则将无法从机器外部访问
您可以通过编辑/etc/mysql/my.conf文件并查找bind-address项目来确保这一点——您希望它看起来像bind-address = 0.0.0.0. 然后保存并重新启动 MySQL：
sudo service mysql restart
如果您在生产服务器上执行此操作，则需要了解安全隐患，此处讨论：https ://serverfault.com/questions/257513/how-bad-is-setting-mysqls-bind-address-to -0-0-0-0
ssh vagrant@127.0.0.1 -p 2222使用（密码 vagrant）登录您的邮箱
然后：sudo nano /etc/mysql/my.cnf并用 # 注释掉以下行
#skip-external-locking
#bind-address
保存并退出
然后：sudo service mysql restart
然后您可以通过 SSH 连接到您的 MySQL 服务器。
我最近遇到了这个问题。我使用 PuPHPet 生成配置。
要通过 SSH 连接到 MySQL，“vagrant”密码对我不起作用，我必须通过 SSH 密钥文件进行身份验证。
连接 MySQL Workbench
连接方式
基于 SSH 的标准 TCP/IP
SSH
Hostname: 127.0.0.1:2222 (forwarded SSH port)
Username: vagrant
Password: (do not use)
SSH Key File: C:\vagrantpath\puphpet\files\dot\ssh\insecure_private_key
(Locate your insercure_private_key)
MySQL
Server Port: 3306
username: (root, or username)
password: (password)
测试连接。
对于尝试使用 mysql workbench 或 sequel pro 执行此操作的任何人，这些是输入：
Mysql Host: 192.168.56.101 (or ip that you choose for it)
username: root (or mysql username u created)
password: **** (your mysql password)
database: optional
port: optional (unless you chose another port, defaults to 3306)
ssh host: 192.168.56.101 (or ip that you choose for this vm, like above)
ssh user: vagrant (vagrants default username)
ssh password: vagrant (vagrants default password)
ssh port: optional (unless you chose another)
好吧，由于给定的答复都没有帮助我，因此我不得不多看一些，并在本文中找到了解决方案。
简而言之，答案如下：
使用 MySQL Workbench 连接到 MySQL
Connection Method: Standard TCP/IP over SSH
SSH Hostname: <Local VM IP Address (set in PuPHPet)>
SSH Username: vagrant (the default username)
SSH Password: vagrant (the default password)
MySQL Hostname: 127.0.0.1
MySQL Server Port: 3306
Username: root
Password: <MySQL Root Password (set in PuPHPet)>
使用给定的方法，我能够使用 MySQL Workbench 和 Valentina Studio 从主机 Ubuntu 机器连接到 vagrant 中的 mysql 数据库。
以下是登录该框后对我有用的步骤：
找到 MySQL 配置文件：
$ mysql --help | grep -A 1 "Default options"
Default options are read from the following files in the given order: /etc/my.cnf /etc/mysql/my.cnf ~/.my.cnf
在 Ubuntu 16 上，路径通常是/etc/mysql/mysql.conf.d/mysqld.cnf
更改绑定地址的配置文件：
如果存在，请按如下方式更改值。如果它不存在，请将其添加到 [mysqld] 部分的任何位置。
bind-address = 0.0.0.0
保存对配置文件的更改并重新启动 MySQL 服务。
service mysql restart
创建/授予对数据库用户的访问权限：
以 root 用户身份连接到 MySQL 数据库并运行以下 SQL 命令：
mysql> CREATE USER 'username'@'%' IDENTIFIED BY 'password';
mysql> GRANT ALL PRIVILEGES ON mydb.* TO 'username'@'%';
这对我有用：在 Vagrant 中连接到 MySQL
username: vagrant password: vagrant
sudo apt-get update sudo apt-get install build-essential zlib1g-dev
git-core sqlite3 libsqlite3-dev sudo aptitude install mysql-server
mysql-client
sudo nano /etc/mysql/my.cnf change: bind-address = 0.0.0.0
mysql -u root -p
use mysql GRANT ALL ON *.* to root@'33.33.33.1' IDENTIFIED BY
'jarvis'; FLUSH PRIVILEGES; exit
sudo /etc/init.d/mysql restart
# -*- mode: ruby -*-
# vi: set ft=ruby :
Vagrant::Config.run do |config|
config.vm.box = "lucid32"
config.vm.box_url = "http://files.vagrantup.com/lucid32.box"
#config.vm.boot_mode = :gui
# Assign this VM to a host-only network IP, allowing you to access
it # via the IP. Host-only networks can talk to the host machine as
well as # any other machines on the same network, but cannot be
accessed (through this # network interface) by any external
networks. # config.vm.network :hostonly, "192.168.33.10"
# Assign this VM to a bridged network, allowing you to connect
directly to a # network using the host's network device. This makes
the VM appear as another # physical device on your network. #
config.vm.network :bridged
# Forward a port from the guest to the host, which allows for
outside # computers to access the VM, whereas host only networking
does not. # config.vm.forward_port 80, 8080
config.vm.forward_port 3306, 3306
config.vm.network :hostonly, "33.33.33.10"
end