时间:2021-07-01 10:21:17 帮助过:8人阅读
排查思路:
第一看看my.conf有没有skip-grant-tables,跳过密码验证
过滤了下没有
1 root@ubuntu:~# cd /etc/mysql/ 2 root@ubuntu:/etc/mysql# pwd 3 /etc/mysql 4 root@ubuntu:/etc/mysql# ls -l 5 总用量 36 6 drwxr-xr-x 2 root root 4096 12月 7 18:05 conf.d 7 -rw------- 1 root root 277 12月 7 17:31 debian.cnf 8 -rw------- 1 root root 317 12月 7 17:05 debian.cnf-5.7 9 -rwxr-xr-x 1 root root 1426 7月 1 04:26 debian-start 10 -rw-r--r-- 1 root root 869 7月 1 04:26 mariadb.cnf 11 drwxr-xr-x 2 root root 4096 12月 7 18:08 mariadb.conf.d 12 lrwxrwxrwx 1 root root 24 12月 7 17:18 my.cnf -> /etc/alternatives/my.cnf 13 -rw-r--r-- 1 root root 839 1月 22 2017 my.cnf.fallback 14 -rw-r--r-- 1 root root 682 2月 4 2017 mysql.cnf 15 drwxr-xr-x 2 root root 4096 12月 7 18:08 mysql.conf.d 16 root@ubuntu:/etc/mysql# grep "skip-grant-tables" -r 17 root@ubuntu:/etc/mysql#
看看my.cnf里面是不是把密码写进去了,查找了相关.cnf文件去看了看也没有
1 root@ubuntu:~# find / -name "*.cnf" 2 /usr/share/ssl-cert/ssleay.cnf 3 /usr/share/dovecot/dovecot-openssl.cnf 4 /usr/lib/ssl/openssl.cnf 5 /etc/ssl/openssl.cnf 6 /etc/alternatives/my.cnf 7 /etc/mysql/my.cnf 8 /etc/mysql/mariadb.cnf 9 /etc/mysql/conf.d/mysqldump.cnf 10 /etc/mysql/conf.d/mysql.cnf 11 /etc/mysql/mariadb.conf.d/50-mysqld_safe.cnf 12 /etc/mysql/mariadb.conf.d/50-mysql-clients.cnf 13 /etc/mysql/mariadb.conf.d/50-client.cnf 14 /etc/mysql/mariadb.conf.d/50-server.cnf 15 /etc/mysql/debian.cnf 16 /var/lib/dpkg/alternatives/my.cnf 17 root@ubuntu:~#
不过有个小发现,
1 vim /etc/mysql/debian.cnf 2 # Automatically generated for Debian scripts. DO NOT TOUCH! 3 [client] 4 host = localhost 5 user = root 6 password = 7 socket = /var/run/mysqld/mysqld.sock 8 [mysql_upgrade] 9 host = localhost 10 user = root 11 password = 12 socket = /var/run/mysqld/mysqld.sock 13 basedir = /usr 14 15 看了说明是以上由脚本生成,不要改动, 16 虽然这样写,我也去改了下,加上密码,重启还是不行
最后的最后,,,,去google了很久,终于有发现了,是用户插件问题。
参见这里:https://nixmash.com/post/fix-for-mysql-rootlocalhost-access-denied-on-new-installs
第一我去跟安装正常的mysql来比较下,如下
1 正常mysql 2 mysql> select user, plugin from mysql.user where plugin = ‘mysql_native_password‘; 3 +-----------+-----------------------+ 4 | user | plugin | 5 +-----------+-----------------------+ 6 | root | mysql_native_password | 7 +-----------+-----------------------+ 8 8 rows in set (0.00 sec)
1 不正常的 2 3 MariaDB [(none)]> select user, plugin from mysql.user; 4 +------+-------------+ 5 | user | plugin | 6 +------+-------------+ 7 | root | unix_socket | 8 +------+-------------+ 9 1 row in set (0.00 sec)
看到这里应该发现问题了,按照正常的修改就行了
如下:
1 sudo service mysql stop 2 sudo mysqld_safe --skip-grant-tables 3 进去mysql执行如下命令: 4 MariaDB [(none)]> UPDATE mysql.user SET authentication_string = PASSWORD(‘mypassword‘), plugin = ‘mysql_native_password‘ WHERE User = ‘root‘ AND Host = ‘localhost‘; 5 MariaDB [(none)]> FLUSH PRIVILEGES; 6 验证: 7 MariaDB [(none)]> select user, plugin from mysql.user 8 -> ; 9 +------+-----------------------+ 10 | user | plugin | 11 +------+-----------------------+ 12 | root | mysql_native_password | 13 +------+-----------------------+ 14 1 row in set (0.01 sec) 15 16 先杀死mysql kill -9 pid 17 启动: 18 sudo service mysql start
最后验证下:需要密码了
root@ubuntu:~# mysql ERROR 1045 (28000): Access denied for user ‘root‘@‘localhost‘ (using password: NO) root@ubuntu:~#
解决 MariaDB无密码就可以登录的问题
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