完整过程解决 ERROR 1045 (28000): Access denied for user 'mysql'@'localhost' (using password: NO)
2017-07-13 13:34
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第一步:修改pid路径
查看日志文件:
cat /var/log/mysqld.log
2013-10-26 16:39:34 3712 [ERROR] /usr/sbin/mysqld: Can't create/write to file '/var/run/mysqld/mysqld.pid' (Errcode: 2 - No such file or directory)
2013-10-26 16:39:34 3712 [ERROR] Can't start server: can't create PID file: No such file or directory
原因:
mysql 用户没有操作/var/run目录的权限,所以pid文件无法创建,导致登陆时无法建立 进程信息文件,登陆进程就无法开启,自然无法登陆。
解决:
修改 /etc/my.conf
原来的
#pid-file=/var/run/mysqld/mysqld.pid
修改为
pid-file=/var/lib/mysql/mysqlid.pid
检查发现,mysql用户根本无法 cd /var/run/。修改为mysql可以有权限的目录后再执行mysql就进入数据库了。
第二步:修改数据库默认密码
/etc/init.d/mysql stop (service mysqld stop )
/usr/bin/mysqld_safe --skip-grant-tables
另外开个SSH连接
[root@localhost ~]# mysql
mysql>use mysql
mysql>update user set password=password("123456") where user="root";
mysql>flush privileges;
mysql>exit
然后
[mysql@localhost etc]$ ps -A | grep mysql
4532 pts/0 00:00:00 mysqld_safe
5542 pts/0 00:00:00 mysqld
[mysql@localhost etc]$ kill -9 4532 5542
正常启动 MySQL:/etc/init.d/mysql start (service mysqld start)
第三步:
登陆ok。 mysql -uroot -p
查看日志文件:
cat /var/log/mysqld.log
2013-10-26 16:39:34 3712 [ERROR] /usr/sbin/mysqld: Can't create/write to file '/var/run/mysqld/mysqld.pid' (Errcode: 2 - No such file or directory)
2013-10-26 16:39:34 3712 [ERROR] Can't start server: can't create PID file: No such file or directory
原因:
mysql 用户没有操作/var/run目录的权限,所以pid文件无法创建,导致登陆时无法建立 进程信息文件,登陆进程就无法开启,自然无法登陆。
解决:
修改 /etc/my.conf
原来的
#pid-file=/var/run/mysqld/mysqld.pid
修改为
pid-file=/var/lib/mysql/mysqlid.pid
检查发现,mysql用户根本无法 cd /var/run/。修改为mysql可以有权限的目录后再执行mysql就进入数据库了。
第二步:修改数据库默认密码
/etc/init.d/mysql stop (service mysqld stop )
/usr/bin/mysqld_safe --skip-grant-tables
另外开个SSH连接
[root@localhost ~]# mysql
mysql>use mysql
mysql>update user set password=password("123456") where user="root";
mysql>flush privileges;
mysql>exit
然后
[mysql@localhost etc]$ ps -A | grep mysql
4532 pts/0 00:00:00 mysqld_safe
5542 pts/0 00:00:00 mysqld
[mysql@localhost etc]$ kill -9 4532 5542
正常启动 MySQL:/etc/init.d/mysql start (service mysqld start)
第三步:
登陆ok。 mysql -uroot -p
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