MySQL reset root password

Wed, 30 Jul 2014 00:00:00 +0000

Hello,

This time I share with you the faster and more secure method to reset the root password of MySQL.

This method is faster because the downtime is between 1 or 2 seconds (MySQL restart time) and it is more secure because the mysqld is not started without grants on the tables.

The steps are:

Create text file /var/lib/mysql/mysql-init with the sintaxis to reset the password for user root:

vim /var/lib/mysql/mysql-init

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('new_password');

Add under the [mysqld] stanza on the file /etc/my.cnf:
```
init-file=/var/lib/mysql/mysql-init
```
Restart the mysqld service:
```
service mysqld restart
```
Remove the init-file line from /etc/my.cnf
Remove /var/lib/mysql/mysql-init
```
rm /var/lib/mysql/mysql-init
```

And after that, you can access again to your mysql instance.

😄

MySQL without password

Tue, 15 Apr 2014 00:00:00 +0000

The common form to log in to MySQL server, is running a mysql command with your login credentials and server’s IP address as arguments. For example:

mysql -u $MYSQL_ROOT -p$MYSQL_PASS

However, besides the inconvenience of typing extra arguments, using plain-text login credentials in a command line like above is really not a secure way to access a MySQL server.

MySQL offers a way for you to log in to MySQL server without password, by using an external MySQL configuration file. In Linux, there are two different kinds of MySQL configuration files:

/etc/my.cnf and
~/.my.conf

While any system-wide MySQL configuration is defined in /etc/my.cnf, any user-specific MySQL configuration is stored in ~/.my.cnf. You can leverage ~/.my.cnf, to define your MySQL login credential in the file.

vim ~/.my.cnf

We put our MySQL user in the configuration file:

[client]
user=root
password=$PASSWORD_ROOT

Make sure to have the configuration file readable to you only.

chmod 0600 ~/.my.cnf

Once ~/.my.cnf is created, simply typing mysql command will let you log in to the MySQL server as root, and you no longer need to provide login password separately.

mysql

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MySQL reset root password

MySQL without password