今天长生诀用Navicat连接数据库出现2013错误，然后百度了一下发现很少人提起这个
由于MySQL数据库是手工安装的，而且外网权限也开了死活连不上，最后折腾了一下就解决了
解决方法：
修改MySQL数据库配置文件etc/my.cnf
在[mysqld]最下面添加
skip-name-resolve
# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html [mysqld] # # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M datadir=/var/lib/mysql s ocket=/var/lib/mysql/mysql.sock # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 # Recommended in standard MySQL setup #sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES max_allowed_packet = 32M max_connections = 1000 max_connect_errors = 2000 skip-name-resolve [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid
然后重启MySQL服务
service mysqld restart
最后解决了
