mysql user password plugin

caching_sha2_password
caching_sha2_password
caching_sha2_password
caching_sha2_password
caching_sha2_password
mysql_native_password

D:/webCodeOnline/src/vendor/github.com/go-sql-driver/mysql/errors.go:4

// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.

package mysql

import (
    "database/sql/driver"
    "errors"
    "fmt"
    "io"
    "log"
    "os"
)

// Various errors the driver might return. Can change between driver versions.
var (
    ErrInvalidConn       = errors.New("invalid connection")
    ErrMalformPkt        = errors.New("malformed packet")
    ErrNoTLS             = errors.New("TLS requested but server does not support TLS")
    ErrOldPassword       = errors.New("this user requires old password authentication. If you still want to use it, please add 'allowOldPasswords=1' to your DSN. See also https://github.com/go-sql-driver/mysql/wiki/old_passwords")
    ErrCleartextPassword = errors.New("this user requires clear text authentication. If you still want to use it, please add 'allowCleartextPasswords=1' to your DSN")
    ErrUnknownPlugin     = errors.New("this authentication plugin is not supported")
    ErrOldProtocol       = errors.New("MySQL server does not support required protocol 41+")
    ErrPktSync           = errors.New("commands out of sync. You can't run this command now")
    ErrPktSyncMul        = errors.New("commands out of sync. Did you run multiple statements at once?")
    ErrPktTooLarge       = errors.New("packet for query is too large. Try adjusting the 'max_allowed_packet' variable on the server")
    ErrBusyBuffer        = errors.New("busy buffer")
)

var errLog = Logger(log.New(os.Stderr, "[mysql] ", log.Ldate|log.Ltime|log.Lshortfile))

// Logger is used to log critical error messages.
type Logger interface {
    Print(v ...interface{})
}

// SetLogger is used to set the logger for critical errors.
// The initial logger is os.Stderr.
func SetLogger(logger Logger) error {
    if logger == nil {
        return errors.New("logger is nil")
    }
    errLog = logger
    return nil
}

// MySQLError is an error type which represents a single MySQL error
type MySQLError struct {
    Number  uint16
    Message string
}

func (me *MySQLError) Error() string {
    return fmt.Sprintf("Error %d: %s", me.Number, me.Message)
}

// MySQLWarnings is an error type which represents a group of one or more MySQL
// warnings
type MySQLWarnings []MySQLWarning

func (mws MySQLWarnings) Error() string {
    var msg string
    for i, warning := range mws {
        if i > 0 {
            msg += "
"
        }
        msg += fmt.Sprintf(
            "%s %s: %s",
            warning.Level,
            warning.Code,
            warning.Message,
        )
    }
    return msg
}

// MySQLWarning is an error type which represents a single MySQL warning.
// Warnings are returned in groups only. See MySQLWarnings
type MySQLWarning struct {
    Level   string
    Code    string
    Message string
}

func (mc *mysqlConn) getWarnings() (err error) {
    rows, err := mc.Query("SHOW WARNINGS", nil)
    if err != nil {
        return
    }

    var warnings = MySQLWarnings{}
    var values = make([]driver.Value, 3)

    for {
        err = rows.Next(values)
        switch err {
        case nil:
            warning := MySQLWarning{}

            if raw, ok := values[0].([]byte); ok {
                warning.Level = string(raw)
            } else {
                warning.Level = fmt.Sprintf("%s", values[0])
            }
            if raw, ok := values[1].([]byte); ok {
                warning.Code = string(raw)
            } else {
                warning.Code = fmt.Sprintf("%s", values[1])
            }
            if raw, ok := values[2].([]byte); ok {
                warning.Message = string(raw)
            } else {
                warning.Message = fmt.Sprintf("%s", values[0])
            }

            warnings = append(warnings, warning)

        case io.EOF:
            return warnings

        default:
            rows.Close()
            return
        }
    }
}

[webdev@iZwz91pyml1gysa2ko137xZ studygolang]$ cat log/error.log-180805
16:36:16.827360 LoadAuthorities authority read fail: this authentication plugin is not supported
16:36:16.848967 LoadRoles role read fail: this authentication plugin is not supported
16:36:16.870337 LoadRoleAuthorities role_authority read fail: this authentication plugin is not supported
16:36:16.892869 loadRecommendNodes node read fail: this authentication plugin is not supported
16:36:16.910600 LoadNodes node read fail: this authentication plugin is not supported

解决 客户端连接 mysql5.7 Plugin 'mysql_native_plugin' is not loaded错误 - 吖水的程序路 - 博客园 https://www.cnblogs.com/aashui/p/8995089.html