-D指定db登陆失败
#mysql -ulzl -p123456 -Dlzldb --socket=/my3456/mysql.sock Warning: Using a password on the command line interface can be insecure. ERROR 1044 (42000): Access denied for user 'lzldb'@'%' to database 'lzldb'困扰了很久，查了user没有问题。
原因很简单 -D参数要加到后面
#mysql -ulzl -p123456 --socket=/my3456/mysql.sock -Dlzldb Warning: Using a password on the command line interface can be insecure. Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 200389 Server version: 5.7.26-log Source distribution Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> select database(); +--------------+ | database() | +--------------+ | lzldb | +--------------+ 1 row in set (0.00 sec)
总结我已知的mysq参数问题：
1 mysql命令参数还是很敏感的，还是要注意参数顺序
2 -D参数尽量靠后
3 --defaults-file必须放在第一个参数
