How To Install And Uninstall Mysql In Ubuntu
MySQL is a free and open source relational database management system (RDBMS), and one of the most popular database management systems in the world. It is used by millions of websites and applications, including Wikipedia, Facebook, and Tumblr. MySQL is a popular choice for web applications because it is fast, reliable, and easy to use.
In this article, we will show you how to install MySQL in Ubuntu and how to uninstall MySQL in Ubuntu.
How to install MySQL in Ubuntu
To install MySQL in Ubuntu, you need to use the apt-get command.
First, open a terminal window and update the package list:
sudo apt-get update
Next, install MySQL:
sudo apt-get install mysql-server
During the installation process, you will be asked to enter a password for the MySQL root user. Make sure to choose a strong password.
Setting up MySQL
After installing MySQL, you need to set up a database and a user for your application.
To set up a database, you need to create a file called my.cnf in the /etc/mysql/ directory. The contents of the file should look like this:
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
log-error=/var/log/mysql/error.log
max_connections=250
server-id=1
The datadir and socket options specify the location of the MySQL data directory and socket file, respectively. The user option specifies the MySQL user name. The log-error option specifies the location of the MySQL error log file. The max_connections option specifies the maximum number of connections that MySQL can handle. The server-id option specifies the MySQL server ID.
To create a user, you need to run the following command:
mysql -u root -p
Enter the MySQL root password when prompted. Then, create a new user:
CREATE USER ‘username’@’localhost’ IDENTIFIED BY ‘password’;
The username and password options specify the user name and password, respectively.
Troubleshooting MySQL
If you encounter any problems with MySQL, you can check the MySQL error log to see what the problem is. The error log is located at /var/log/mysql/error.log.
You can also check the MySQL status by running the following command:
sudo service mysql status
This command will show you the current status of MySQL. If MySQL is not running, you can start it by running the following command:
sudo service mysql start
How to uninstall MySQL in Ubuntu
To uninstall MySQL in Ubuntu, you need to use the apt-get command.
First, open a terminal window and update the package list:
sudo apt-get update
Next, uninstall MySQL:
sudo apt-get remove mysql-server
During the uninstallation process, you will be asked to enter the MySQL root password. Make sure to choose a strong password.
Conclusion
In this article, we have shown you how to install MySQL in Ubuntu and how to uninstall MySQL in Ubuntu. We have also shown you how to set up a database and a user for your application.