RDBMS Archives - WPcademy

April 16, 2019April 23, 2019

How To Install MySQL on Ubuntu 18.04 LTS

MySQL is a relational database management system (RDBMS) that runs as a server providing multi-user access to a number of databases. The MySQL source code is freely available because it was originally developed as freeware. MySQL is written in C and C++ and is compatible with all major operating systems. MySQL can be used for a variety of applications, but is most commonly found on web servers.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation MySQL 8.0 on a Ubuntu 18.04 (Bionic Beaver) server.

Install MySQL on Ubuntu 18.04 LTS Bionic Beaver

Step 1. First make sure that all your system packages are up-to-date

sudo apt-get update
sudo apt-get upgrade

Step 2. Installing MySQL on Ubuntu 18.04 LTS.

First step, we will now set up the MySQL official repository on the system:

wget https://dev.mysql.com/get/mysql-apt-config_0.8.10-1_all.deb

Then run the commands below to install:

sudo dpkg -i mysql-apt-config_0.8.10-1_all.deb

The MYSQL installer will prompt you to select the MySQL repository. Based on your selection, the installer will configure repositories on the system to receive the appropriate version of MySQL.

Now that the repository is installed, run the commands below to install:

apt install mysql-server mysql-client

During the installation, you should be prompted to create and confirm a MySQL root password.

Once complete, you can verify MySQL 8.0 is installed by running the below command:

systemctl status mysql
systemctl start mysql
systemctl enable mysql

After the installation of MySQL is complete, you may need to secure your new MySQL. By default, MySQL is not hardened. You can secure MySQL using the mysql_secure_installation script. you should read and below each steps carefully which will set root password, remove anonymous users, disallow remote root login, and remove the test database and access to secure MySQL:

mysql_secure_installation

Configure it like this:

- Set root password? [Y/n] y
- Remove anonymous users? [Y/n] y
- Disallow root login remotely? [Y/n] y
- Remove test database and access to it? [Y/n] y
- Reload privilege tables now? [Y/n] y

To log into MySQL, use the following command (note that it’s the same command you would use to log into a MySQL database):

mysql -u root -p

One of the most important things when running MySQL on a production server is to get the most out of its performances. If you are a beginner and you do not know how to tune your MySQL server, you can start with a program called MySQLTuner. It will help you to analyze your server and to tune MySQL for better overall performances.

Congratulation’s! You have successfully installed MySQL. Thanks for using this tutorial for installing MySQL 8.0 server in Ubuntu 18.04 Bionic Beaver system. For additional help or useful information, we recommend you to check the official MySQL web site.

April 16, 2019April 23, 2019

How To Install MySQL Server on Ubuntu 17.04

Install MySQL Server on Ubuntu 17.04 Zesty Zapus

Step 1. First make sure that all your system packages are up-to-date

sudo apt-get update
sudo apt-get upgrade

Step 2. Installing MySQL.

Run the commands below to install MySQL:

apt-get install mysql-server mysql-client

Once complete, you can verify MySQL is installed by running the below command:

systemctl status mysql
systemctl start mysql
systemctl status mysql

mysql_secure_installation

Configure it like this:

- Set root password? [Y/n] y
- Remove anonymous users? [Y/n] y
- Disallow root login remotely? [Y/n] y
- Remove test database and access to it? [Y/n] y
- Reload privilege tables now? [Y/n] y

To log into MySQL, use the following command (note that it’s the same command you would use to log into a MySQL database):

mysql -u root -p

Congratulation’s! You have successfully installed MySQL. Thanks for using this tutorial for installing MySQL Server in Ubuntu 17.04 Zesty Zapus system. For additional help or useful information, we recommend you to check the official MySQL web site.

April 4, 2019April 24, 2019

How To Install PostgreSQL on Ubuntu 16.04

PostgreSQL is a free, open-source object-relational database management system (object-RDBMS), similar to MySQL, and is standards-compliant and extensible. It is commonly used as a back-end for web and mobile applications. PostgreSQL, or ‘Postgres’ as it is nicknamed, adopts the ANSI/ISO SQL standards together, with the revisions.

This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation PostgreSQL on a Ubuntu 16.04 (Xenial Xerus) server.

Install PostgreSQL on Ubuntu 16.04

Step 1. First make sure that all your system packages are up-to-date by running these following apt-get commands in the terminal.

sudo apt-get update
sudo apt-get upgrade

Step 2. Installing PostgreSQL server.

PostgreSQL is available in the default repositories. So enter the following command from the Terminal to install it:

apt-get install postgresql postgresql-contrib phppgadmin

Step 3. Access PostgreSQL command prompt.

After installing PostgreSQL database server, by default it creates a user ‘postgres’ with role ‘postgres’. It also creates a system account with same name ‘postgres’. So to connect to postgres server, login to your system as user postgres and connect database:

su - postgres
psql

Now you are logged in to PostgreSQL database server. To check login info use following command from database command prompt:

postgres-# \conninfo

To disconnect from PostgreSQL database command prompt just type below command and press enter. It will return you back to Ubuntu command prompt:

postgres-# \q

Create new user and database:

### For example, let us create a new user called “wpcademy” with password “wpcademy.com”, and database called “wpcademydb”. ###
sudo -u postgres createuser -D -A -P wpcademy
sudo -u postgres createdb -O wpcademy wpcademydb

Step 4. Configure Apache2 for phpPgAdmin.

phpPgAdmin is a web-based administration tool for PostgreSQL. It is perfect for PostgreSQL DBAs, newbies, and hosting services. You need to configure apache for phpPgAdmin. Edit the file /etc/apache2/conf-available/phppgadmin.conf:

nano /etc/apache2/conf-available/phppgadmin.conf

Comment out the line #Require local by adding a # in front of the line and add below the line allow from all so that you can access from your browser:

Step 5. Configure phpPgAdmin.

Next, edit the file /etc/phppgadmin/config.inc.php:

nano /etc/phppgadmin/config.inc.php

Now change the following option:

$conf[‘extra_login_security'] = true;
to
$conf[‘extra_login_security'] = false;

Now, we can restart Apache and phpPgAdmin so that the changes take place:

systemctl restart postgresql
systemctl restart apache2
systemctl enable postgresql
systemctl enable apache2

Step 6. Accessing phpPgAdmin.

phpPgAdmin will be available on HTTP port 80 by default. Open your favorite browser and navigate to http://yourdomain.com/phppgadmin or http://server-ip/phppgadmin. If you are using a firewall, please open port 80 to enable access to the control panel.

Congratulation’s! You have successfully installed PostgreSQL Server. Thanks for using this tutorial for installing PostgreSQL in Ubuntu 16.04 (Xenial Xerus) systems. For additional help or useful information, we recommend you to check the official PostgreSQL web site.