Mariadb初始登陆报错 ERROR 1045 (28000) 的解决办法
今天，测试环境下需要使用到mysql数据库;于是我使用yum安装方式快速部署了mariadb。使用的Linux系统版本为CentOS 7.x。安装完成后，我很自然的使用mysql命令登陆，因为是刚安装的初始环境，结果报错了:
# mysql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) 第一次碰到这种情况。我检查了配置文件，没发现异常，另外yum安装,也是初始环境，应该不会有问题。无奈只能上网找找相关的案例试试。
还好，最后成功的解决了此问题。
解决步骤如下:
1,首先停掉数据库服务:
# systemctl stop mariadb.service 2,使用mysqld_safe来启动mysqld服务器:
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
4120
# 170301 11:04:57 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'.
170301 11:04:57 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql 3,登录:
# mysql -u root mysql
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 MariaDB monitor.Commands end with ; or \g.
Your MariaDB connection id is 1
Server version: 5.5.52-MariaDB MariaDB Server
Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB > 4,修改root用户密码:
MariaDB > UPDATE user SET PASSWORD=PASSWORD('newpassword') where USER='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4Changed: 4Warnings: 0
MariaDB > FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
MariaDB > QUIT
Bye
# 5,使用修改后的root用户和新密码newpassword登录数据库:
# mysql -uroot -p
Enter password:
Welcome to the MariaDB monitor.Commands end with ; or \g.
Your MariaDB connection id is 6
Server version: 5.5.52-MariaDB MariaDB Server
Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]>
到此，该问题成功解决！
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