Sequel Pro and MySQL connection failed

问题

I just installed mysql on mac from Homebrew

brew install mysql

mysql -V

mysql  Ver 8.0.11 for osx10.13 on x86_64 (Homebrew)

from terminal it works and I can login to mysql but from Sequel Pro it says

Unable to connect to host 127.0.0.1, or the request timed out.

Be sure that the address is correct and that you have the necessary privileges, or try increasing the connection timeout (currently 10 seconds).

MySQL said: Authentication plugin 'caching_sha2_password' cannot be loaded: dlopen(/usr/local/lib/plugin/caching_sha2_password.so, 2): image not found

can't figure out what I am missing

回答1:

This is because Sequel Pro is not ready yet for a new kind of user login, as the error states: there is no driver. Quick fix for non-homebrew installs:

Apple Logo > System Preferences > MySQL > Initialize Database, then type your new password and select 'Use legacy password'

After restart you should be able to connect. Do it only on fresh installs, because you may lost your db tables otherwise.

mysql + homebrew

Basically you will have to perform some actions manually, however- your database data won't be deleted like in solution above

• Go to [my.cnf][1] file and in section [mysqld] add line:

  default-authentication-plugin=mysql_native_password

• Login to mysql server from terminal: run mysql -u root -p, then inside shell execute this command (replacing [password] with your actual password):

  ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '[password]';

• exit from mysql shell with exit and run brew services restart mysql.

Should work.

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my.cnf

The my.cnf file is located in /etc/my.cnf on Unix/Linux

回答2:

1. Assuming you don't have a mysql configuration, echo the following to ~/.my.conf

[mysqld]
default-authentication-plugin=mysql_native_password

2. Sign into mysql with mysql -u root -p
3. Set the root user password with ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '[PASSWORD]'; where [PASSWORD] is a password of your choosing.
4. Restart mysql with e.g. brew services restart mysql

回答3:

TL;DR: Sequel Pro is dead since 2016. Don't downgrade your DB because of a tool. Move on to an alternative tool.

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All the other solutions here are recommending changing your DB settings (making it less secure, as advertised by MySQL) for the tool you are using. That's not acceptable to me.

I have always been a huge fan of Sequel Pro, even donated to it. But, with all my passion and love, I am sorry if the tool doesn't have any release since 2016. YOLO, and I need to move on!

The alternative I found (from https://stackoverflow.com/a/55235533/2321594, thanks to @arcseldon) is DBeaver which supports MySQL 8's new authentication (non-legacy) method.

PS. The only trick in the tool side, not the DB side is when you are creating a MySQL 8 connection you might need to go to "Driver Properties" (later can be found in Edit Connection) and turn the value of allowPublicKeyRetrieval to true.

I needed this to connect to my MySQL container created using Docker. To have the IP of MySQL be visible to the outside, for any other application in your ecosystem (not just this tool), you should either create a new user in MySQL, or pass -e MYSQL_ROOT_HOST=% in the run-time or as an ENV.

回答4:

If you connect to MySQL via root@127.0.0.1, make sure that you reset its password too!

ALTER USER 'root'@'127.0.0.1' IDENTIFIED WITH mysql_native_password BY '[password]';

来源：https://stackoverflow.com/questions/51179516/sequel-pro-and-mysql-connection-failed