mysql如何查看远程用户_MySQL系列(十)--用户权限及远程访问

本文基于MySQL8.0，记录一下完整的远程访问的过程，以及这个过程中可能遇到的问题，MySQL运行在阿里云服务器，操作系统：CentOS 7.6 64位

顺便说下，买服务器还是要双十二这种拉新活动再买，用一个新的支付宝账号购买，能便宜一大半，不然双核4G就两千多块了。

这里默认防火墙已经向外暴露3306端口/关闭防火墙了，以及阿里云安全组配置暴露3306端口，在Windows通过Navicat测试连接

随便创建一个用户：

mysql> create user 'dev'@'localhost' identified by 'huluhulu';　　//创建用户dev，只能在localhost使用，密码huluhulu

Query OK,0 rows affected (0.00sec)

mysql> select host, user ,authentication_string, plugin from user;　　//查看user，host，加密后的字符串，以及加密类型+-----------+------------------+------------------------------------------------------------------------+-----------------------+

| host | user | authentication_string | plugin |

+-----------+------------------+------------------------------------------------------------------------+-----------------------+

| % | root | *43C685FF9E03403DD721CF54B4E40B199DA06624 | mysql_native_password |

| % | test | *43C685FF9E03403DD721CF54B4E40B199DA06624 | mysql_native_password |

| localhost | dev | $A$005$6dH-H a.'^JNmbBkSYomGJK2180WHglWpm4mw.BIJGtuPX0qcBrOLIcMqC | caching_sha2_password |

| localhost | mysql.infoschema | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | caching_sha2_password |

| localhost | mysql.session | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | caching_sha2_password |

| localhost | mysql.sys | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | caching_sha2_password |

| localhost | root | *43C685FF9E03403DD721CF54B4E40B199DA06624 | mysql_native_password |

+-----------+------------------+----------------------------------------------------------------