一、问题

[root@localhost ~]# mysql -uroot -p1234567
mysql: [Warning] Using a password on the command line interface can be insecure.

二、解决方法

1. 方法一

  1. 将密码写入到主配置文件中

    [root@localhost ~]# vim /etc/my.cnf
    [mysqldump]
    user=root
    password=1234567
     
    [mysql]
    user=root
    password=1234567
    
  2. 直接使用命令登录,再也无需输入账号密码

    [root@localhost ~]# mysql
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 10
    Server version: 5.7.18-log Source distribution
    Copyright (c) 2000, 2017, 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> 
    

2. 方法二

  1. 自动配置MYSQL密文密码

    该操作会在用户家目录下生成一个隐藏文件".mylogin.cnf",里面记录了MYSQL的密文的密码,只要配置了以后,我们也是直接使用命令登录,再也无需输入账号密码了,如果你想取消,删除此文件即可。

    [root@localhost ~]# mysql_config_editor set --user=root --host=localhost --port=3306 --password
    Enter password: 输入密码
    
  2. 直接使用命令登录,再也无需输入账号密码

    [root@localhost ~]# mysql
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 11
    Server version: 5.7.18-log Source distribution
    Copyright (c) 2000, 2017, 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> 
    

3. 方法三

  1. 直接使用命令登录,屏蔽错误信息

    由于告警信息是标准错误,我们可以将标准错误的输出信息输出为空。

    [root@localhost ~]# mysql -uroot -p1234567 2>/dev/null
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 36
    Server version: 5.7.18-log Source distribution
    Copyright (c) 2000, 2017, 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>