客户端连接mysql出错

jxdiscuz

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　　如果你想连接你的mysql的时候发生这个错误：
　　ERROR 1130: Host '192.168.16.145' is not allowed to connect to this MySQL server

• 　　改表法。
  

　　可能是你的帐号不允许从远程登陆，只能在localhost。这个时候只要在localhost的那台电脑，登入mysql后，更改 "mysql" 数据库里的 "user" 表里的 "host" 项，从"localhost"改称"%"
mysql -u root -pvmwaremysql>use mysql;mysql>update user set host = '%' where user = 'root';mysql>select host, user from user;　　2. 授权法。
　　（1）例如：你想myuser使用mypassword从任何主机连接到mysql服务器的话
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;　　（2）如果你想允许用户myuser从ip为192.168.16.145的主机连接到mysql服务器，并使用mypassword作为密码
GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.16.145' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;　　（3）最后这句一定一定要加上！！！
mysql>flush privileges;　　出现如下错误：
　　Communications link failure
　　The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. java.net.ConnectException: Connection refused: connect
　　这时候，你需要登录到服务器里面按照如下方法设置你的mysql并重启mysql
vim /etc/mysql/my.cnf　　将配置里面的bind-address = 127.0.0.1
　　这一项改成bind-address = 0.0.0.0
　　取消MySQL Server 绑定本地地址！
　　之后保存退出(wq)
sudo /etc/init.d/mysql restart (重启mysql服务)　　
或者sudo service mysql restart