首页 > 数据库> 文章详细

盘点Mysql的登陆方式

2020-05-29 14:57:33 阅读：244 来源： 互联网

标签：Mysql 盘点登陆 mysql Oracle Pro% root MySQL

原文:盘点Mysql的登陆方式

前置知识#

我们想登陆到mysql中前提是肯定需要一个用户名和密码：比如 root root

在mysql中用户的信息会存放在 mysql数据库下的 user表中

可以 use mysql 然后select * from user\G;查看到系统上的所用的用户信息；

其中有一列叫做HOST，HOST的不同值决定了用户拥有不同的登陆方式：比如：

标识符	含义
%	任意ip均等登陆
localhost	只允许本地登陆
127.0.0.1	只允许本地登陆
sv1	主机名为sv1的机器可登录，主机名可以在 /etc/hostname中查看
::1	本机可登录

所以在登陆前，请确定你的使用的登陆用户的HOST列中有相应的配置

骚气的登陆#

在mac上登陆华为云的服务器

CopyMacBook-Pro% ssh 'root'@'139.9.92.123'
root@139.9.92.123's password:
Last failed login: Fri May 29 11:03:42 CST 2020 from 202.85.208.14 on ssh:notty
There was 1 failed login attempt since the last successful login.
Last login: Thu May 28 16:36:32 2020 from 202.85.208.7

	Welcome to Huawei Cloud Service

-bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory
[root@139 ~]#

在mac上远程登陆服务器上的mysql

CopyMacBook-Pro% ./mysql -h139.9.92.123 -uroot -reqw123.. -P3306
mysql: [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 2174
Server version: 5.7.29 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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 databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |

mac登陆本地的mysql

如果你有配置环境变量，在任何目录下系统都识别mysql命令

你可以直接像下面这样登陆：

CopyMacBook-Pro% mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.30 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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>

如果你没有配置环境变量，系统就不能直接识别mysql命令，需要你进入到mysql安装目录下的bin文件下，找到mysql命令，然后执行登陆的动作

CopyMacBook-Pro% /usr/local/mysql/bin/mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.30 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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>

也可以用远程登陆的方式登陆本地mysql

CopyMacBook-Pro% mysql -h127.0.0.1 -uroot -proot -P3306
mysql: [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 4
Server version: 5.7.30 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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 databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| assignment         |
| cal                |

本地登陆

我们可以借助mysql.sock实现本地登陆。

那这个mysql.sock是什么？

很直观的我们得知道这个mysql.sock的作用，通过它我们可以实现mysql的本地登陆。

mysql.sock应该是mysql的主机和客户机在同一host（物理服务器）上的时候，使用unix domain socket做为通讯协议的载体，它比tcp快。

通过命令可以查看到mysql.sock的位置。

CopyMacBook-Pro% netstat -ln | grep mysql
64e3f4c55eb824d7 stream  0   0  64e3f4c5614859a7   0   0   0 /tmp/mysql.sock

记下这个 mysql.sock的地址。接下来我们会创建一个配置文件，你找个看着比较顺眼的目录放置这个配置文件。

我实在这样创建的：

CopyMacBook-Pro% sudo mkdir etc
MacBook-Pro% ls -l
total 552
-rw-r--r--   1 root    wheel   275235 Mar 24 01:35 LICENSE
-rw-r--r--   1 root    wheel      587 Mar 24 01:35 README
drwxr-xr-x  40 root    wheel     1280 Mar 24 02:45 bin
drwxr-x---  27 _mysql  _mysql     864 May 28 20:44 data
drwxr-xr-x   5 root    wheel      160 Mar 24 02:44 docs
drwxr-xr-x   2 root    wheel       64 May 29 11:39 etc
drwxr-xr-x  53 root    wheel     1696 Mar 24 02:44 include
drwxr-x---   3 _mysql  _mysql      96 May 28 20:44 keyring
drwxr-xr-x  11 root    wheel      352 May 13 09:16 lib
drwxr-xr-x   4 root    wheel      128 Mar 24 02:44 man
drwxr-xr-x  39 root    wheel     1248 Mar 24 02:44 share
drwxr-xr-x   6 root    wheel      192 May 28 19:20 support-files
MacBook-Pro% cd etc
MacBook-Pro% sudo touch user.root.cnf
MacBook-Pro% sudo vim user.root.cnf

然后在 user.root.cnf 中添加如下的配置：

Copy[client]
user=root
password=root
socket=/tmp/mysql.sock

好了，现在可以这样实现本地登陆

CopyMacBook-Pro% ../bin/mysql --defaults-extra-file=./user.root.cnf
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.30 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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>

花里胡哨的本地登陆

有时候，你可能会看到其他大佬登陆mysql时使用： mysql.local 骚气十足的本地登陆mysql

他是怎么做到的呢？可以借助alias+mysql.sock实现：

为我们的登陆mysql的命令添加别名，像下面这样：

CopyMacBook-Pro% alias mysql.local='/usr/local/mysql/bin/mysql --defaults-extra-file=/usr/local/mysql/etc/user.root.cnf'
MacBook-Pro% mysql.local
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.7.30 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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>

从此，你也可以骚气登陆mysql

标签：Mysql,盘点,登陆,mysql,Oracle,Pro%,root,MySQL
来源： https://www.cnblogs.com/lonelyxmas/p/12987407.html

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。

ICode9

盘点Mysql的登陆方式

前置知识#

骚气的登陆#