1、ERROR! The server quit without updating PID file (/usr/local/var/mysql/EricdeiMac.local.pid).
2、ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
mysql> SHOW VARIABLES LIKE 'validate_password%';
+--------------------------------------+--------+
| Variable_name | Value |
+--------------------------------------+--------+
| validate_password.check_user_name | ON |
| validate_password.dictionary_file | |
| validate_password.length | 8 |
| validate_password.mixed_case_count | 1 |
| validate_password.number_count | 1 |
| validate_password.policy | MEDIUM |
| validate_password.special_char_count | 1 |
+--------------------------------------+--------+
7 rows in set (0.00 sec)
mysql> set global validate_password_length=4;
ERROR 1193 (HY000): Unknown system variable 'validate_password_length'
mysql> set global validate_password.length=4;
Query OK, 0 rows affected (0.00 sec)
mysql> set global validate_password.policy=0;
Query OK, 0 rows affected (0.00 sec)
3、解决MySQL修改密码：ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option
1）第一个终端 打开：cd /usr/local/mysql/bin => sudo su => ./mysqld_safe --skip-grant-tables &
2) 第二个终端 打开：mysql -u -root => flush privileges; =>ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';
