root权限
- 打开terminal命令行
- 输入sudo su
- 输入初始密码
freeproblemset
-
mysql数据库的密码的位置,如何登陆数据库
数据库账号密码存放在两个配置文件中:
- /home/judge/etc/judge.conf
- /home/judge/src/web/include/db_info.inc.php
新版本中,快速登陆mysql的脚本在
install
目录里,名字为mysql.sh
使用方法- sudo bash /home/judge/src/install/mysql.sh
参考:Hustoj-FQA
登陆数据库报错(socket错误)
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2)
-
首先检查是否安装了mysql-server了
sudo apt-get install mysql-server to install mysql on ubuntu, 如果mysql-server已经存在了,那么在去尝试一下是否成功,如果还是这个错误的话那么就是文件/var/run/mysqld/mysqld.sock 不存在。 -
如果/var/run/mysqld/mysqld.sock文件不存在应该怎么办?
vim /etc/mysql/my.cnf 将会看到内容如下:
执行
# # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/ !includedir /etc/mysql/mysql.conf.d/
你的mysql的配置在/etc/mysql/mysql.conf.d目录下的mysqld.cnf文件,打开如下:
可以看到:bind-address = 127.0.0.1 socket = /var/run/mysqld/mysqld.sock 等信息文章来源:https://www.toymoban.com/news/detail-503152.html我的虚拟机是/var/run下面没有mysqld目录,执行下面命令,然后目录和sock文件就都有了文章来源地址https://www.toymoban.com/news/detail-503152.html
sudo mkdir -p /var/run/mysqld sudo chown mysql /var/run/mysqld/ sudo service mysql restart
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