遇到问题

socket: auth failed …/…/lualib/skynet/socketchannel.lua:482: errno:1251, msg:Client does not support authentication protocol requested by server; consider upgrading MySQL client,sqlstate:08004

查看用户信息

1. use mysql;
2. select user,host,plugin from user where user='root';

出现：

这里建议新建用户然后查看（root 不知道为什么修改不了）

1. create user 'cauchy'@'%' identified by 'root';

创建用户 cauchy，允许任何 IP 访问 %，密码 root

2. grant all privileges on chat.* to 'cauchy'@'%';

授权所有权限给任何 IP 登上的用户 cauchy 访问 database 中 chat 数据库的所有表 chat.*

执行：select user,host,plugin from user where user='cauchy';

mysql 8 之前的版本中加密规则是 mysql_native_password ,而在 mysql 8 之后,加密规则是 caching_sha2_password

修改加密规则

alter user 'cauchy'@'%' identified with mysql_native_password by 'root';

成功连入mysql

local ok, db = pcall(mysql.connect, {
    host = "127.0.0.1",
    port = 3306,
    database = "chat",
    user = "cauchy",
    password = "root",
    max_packet_size = 1024 * 1024, 
    charset = "utf8",
    on_connect = function() end 
})