版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/wm9028/article/details/88342600
关于升级mysql8.0无法连接的问题
最近朋友遇到canal无法连接数据库的问题
报错代码：
ERROR c.a.otter.canal.parse.inbound.mysql.MysqlEventParser - dump address /127.0.0.1:3306 has an error, retrying. caused by
com.alibaba.otter.canal.parse.exception.CanalParseException:
这个是nodejs无法连接的错误
代码：
var mysql = require('mysql');
var connection = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '',
database: 'test_db',
// insecureAuth : true,
});
connection.query('SELECT * FROM users', function(err, rows, fields) {
if (err) throw err;
});
报错
C:\Users\mysql-test>node app.js
C:\Users\mysql-test\node_modules\mysql\lib\protocol\Parse
r.js:80
throw err; // Rethrow non-MySQL errors
^
Error: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client
at Handshake.Sequence._packetToError (C:\Users\mysql-
test\node_modules\mysql\lib\protocol\sequences\Sequence.js:52:14)
at Handshake.ErrorPacket (C:\Users\mysql-test\node_mo
dules\mysql\lib\protocol\sequences\Handshake.js:130:18)
at Protocol._parsePacket (C:\Users\mysql-test\node_mo
dules\mysql\lib\protocol\Protocol.js:279:23)
at Parser.write (C:\Users\mysql-test\node_modules\mys
ql\lib\protocol\Parser.js:76:12)
at Protocol.write (C:\Users\mysql-test\node_modules\m
ysql\lib\protocol\Protocol.js:39:16)
at Socket.<anonymous> (C:\Users\mysql-test\node_modul
es\mysql\lib\Connection.js:103:28)
at Socket.emit (events.js:159:13)
at addChunk (_stream_readable.js:265:12)
at readableAddChunk (_stream_readable.js:252:11)
at Socket.Readable.push (_stream_readable.js:209:10)
--------------------
at Protocol._enqueue (C:\Users\mysql-test\node_module
s\mysql\lib\protocol\Protocol.js:145:48)
at Protocol.handshake (C:\Users\mysql-test\node_modul
es\mysql\lib\protocol\Protocol.js:52:23)
at Connection.connect (C:\Users\mysql-test\node_modul
es\mysql\lib\Connection.js:130:18)
at Object.<anonymous> (C:\Users\mysql-test\server.js:
11:5)
at Module._compile (module.js:660:30)
at Object.Module._extensions..js (module.js:671:10)
at Module.load (module.js:573:32)
at tryModuleLoad (module.js:513:12)
at Function.Module._load (module.js:505:3)
at Function.Module.runMain (module.js:701:10)