Windows SQLYog连接不上VMbox Ubuntu2204 的Mysql解决方法
解决方法：
1、先检查以下mysql的端口状态

netstat -anp|grep mysql

如果显示127.0.0.1:3306 则说明需要修改，若为: : :3306，则不用。

在**/etc/mysql/mysql.conf.d/mysqld.cnf**，找到下面这部分，然后注释掉即可。

Instead of skip-networking the default is now to listen only on

localhost which is more compatible and is not less secure.

bind-address = 127.0.0.1

## The MySQL database server configuration file.## One can use all long options that the program supports.# Run program with --help to get a list of available options and with# --print-defaults to see which it would actually understand and use.## For explanations see# http://dev.mysql.com/doc/mysql/en/server-system-variables.html# Here is entries for some specific programs# The following values assume you have at least 32M ram[mysqld]## * Basic Settings#user		= mysql# pid-file	= /var/run/mysqld/mysqld.pid# socket	= /var/run/mysqld/mysqld.sock# port		= 3306# datadir	= /var/lib/mysql# If MySQL is running as a replication slave, this should be# changed. Ref https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_tmpdir# tmpdir		= /tmp## Instead of skip-networking the default is now to listen only on# localhost which is more compatible and is not less secure.#bind-address		= 127.0.0.1mysqlx-bind-address	= 127.0.0.1## * Fine Tuning#key_buffer_size		= 16M# max_allowed_packet	= 64M# thread_stack		= 256K# thread_cache_size       = -1# This replaces the startup script and checks MyISAM tables if needed# the first time they are touchedmyisam-recover-options  = BACKUP# max_connections        = 151# table_open_cache       = 4000## * Logging and Replication## Both location gets rotated by the cronjob.## Log all queries# Be aware that this log type is a performance killer.# general_log_file        = /var/log/mysql/query.log# general_log             = 1## Error log - should be very few entries.#log_error = /var/log/mysql/error.log## Here you can see queries with especially long duration# slow_query_log		= 1# slow_query_log_file	= /var/log/mysql/mysql-slow.log# long_query_time = 2# log-queries-not-using-indexes## The following can be used as easy to replay backup logs or for replication.# note: if you are setting up a replication slave, see README.Debian about#       other settings you may need to change.# server-id		= 1# log_bin			= /var/log/mysql/mysql-bin.log# binlog_expire_logs_seconds	= 2592000max_binlog_size   = 100M# binlog_do_db		= include_database_name# binlog_ignore_db	= include_database_name