mysql登陆报错mysql: unknown variable 'basedir=

发布时间：2020-08-10 13:01:16

来源：ITPUB博客

阅读：67

作者：feelpurple

使用mysql登陆数据库报错

[root@localhost ~]# mysql -uroot -p

mysql: unknown variable 'basedir=/usr'

报错原因：

配置文件里面的格式有误，[mysqld]写成了[mysql]

[root@localhost step]# cat /etc/my.cnf

[mysql]

basedir = /usr

datadir = /var/lib/mysql

log-error = /var/lib/mysql/localhost.localdomain.err

pid-file = /var/lib/mysql/localhost.localdomain.pid

log-bin=/var/lib/mysql/mysqld-bin

binlog_format=row

binlog-do-db=dmcdbTEST

解决方法：

将[mysql]改为[mysqld]

[root@localhost step]# cat /etc/my.cnf

[mysqld]

basedir = /usr

datadir = /var/lib/mysql

log-error = /var/lib/mysql/localhost.localdomain.err

pid-file = /var/lib/mysql/localhost.localdomain.pid

log-bin=/var/lib/mysql/mysqld-bin

binlog_format=row

binlog-do-db=dmcdbTEST

之后重启数据库

[root@localhost mysql]# mysqladmin -uroot -p shutdown

[root@localhost mysql]# mysqld_safe --defaults-file=/etc/my.cnf &

数据库可以正常连接

[root@localhost ~]# mysql -uroot -p

Warning: Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 1

Server version: 5.6.21-70.1 Percona Server (GPL), Release 70.1, Revision 698

Copyright (c) 2009-2014 Percona LLC and/or its affiliates

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> show global variables like '%double%';

+--------------------+-------+

| Variable_name      | Value |

+--------------------+-------+

| innodb_doublewrite | ON    |

+--------------------+-------+

1 row in set (0.00 sec)