Install GrunJS on Debian. The JavaScript task runner

GruntJS is a tool for executing tasks using Javascript. It allows us to have a development of quality applications, automating as much as possible the tasks and focusing on good code. This results in a decrease in coding time and the quality of it.

Some of the things we can do using Grunt if it’s configured correctly are the following:

• Concatenation or minimization of files CSS or JS.
• Optimization of images.
• The compilation ( SASS, CSS, and others).
• Unit Test.

To perform this and other tasks, GruntJS requires plugins to be installed. That’s a lot more than 3,000.

So, now we are going to learn how to install GruntJS on Debian 9.

Install NodeJS

GruntJS uses NodeJS but we do not have to learn from NodeJS. So first we will have to install it. To do that, first, we’ll get curl and then for NodeJS.

:~# apt install curl

Now, proceed to install NodeJS 12. First, add the repository.

:~# curl -sL https://deb.nodesource.com/setup_12.x | bash -

Then we can install NodeJS. However, it is necessary to install the system compilation tools. To do this, run the following command:

:~# apt install build-essential nodejs

Check the NodeJS version.

:~# node -v
v12.4.0

After that, install GruntJS on Debian 9 using NPM.

:~# npm install -g grunt-cli

Finally, check the installed version.

:~# grunt --version
grunt-cli v1.3.2

Now, let us test it.

Add GruntJS to an existing project

First, place your prompt in the project directory.

:~# cd /your-project/path

Then, run the following command:

:~# npm init

As you can see you have to answer some questions.

Now, we have to add two files to the project. First, a .JSON file where you add the metadata of the project that NPM will read later. This is auto-generated. The second one is grunfile.js where you define the tasks and plugins that GruntJS will use.

Once you have added the .JSON file, run the next command:

:~# npm install grunt --save-dev

Now, create the gruntfile.js file. And create a simple task.

:~# nano Gruntfile.js

var grunt = require('grunt');
grunt.registerTask('default', 'default task description', function(){
  console.log('hello world');
});

After that, run the task.

:~# grunt

And that is it.

Conclusion

In this post, you have learned how to install GruntJS on Debian 10 / Debian 9. The process is made easier by the fact that it depends on NodeJS and is not complicated. With this tool, you can define Javascript tasks easily.

Please share this post with your friends.

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Boltwire CMS

Many blogs and all with different needs. That’s why different CMS is required.

Boltwire is a CMS (Content Manager System) that allows you to create blogs quickly and easily. Its main features focus on flexibility and speed. So much so that it does not require a database manager but the same program is responsible for managing the data.

On the other hand, Boltwire stands out for being completely free for our server or VPS. This makes it a solid alternative for personal or even educational projects. Also if our company is starting and we want something basic to start.

Although it is free, it has support for Plugins that extend the functionality of the application. In this way, you will have a robust CMS, free and with extra functions to perform the tasks entrusted.

So, let us start.

Install Boltwire CMS on Debian 9

1) Install Apache Web server

First, we need to install the Apache web server. Apache is one of the most used web servers in the world. It is incredibly flexible and above all secure.

To do this, first, log in to your server and then run this command

:~$ su
:~# apt install apache

Once you have finished installing. Let’s check that it’s working. Open your web browser and go to your server http://your-server. You should see this.

So, Apache is running.

2) Install PHP 7.2

Debian is a robust system but some of its packages are not updated. For example, the case of PHP. The version in the repositories is 7.0 but it is recommended to use at least 7.2 for Boltwire.

So, let us do it. First, install some required packages.

:~# apt-get install software-properties-common unzip

Then, read our post about PHP 7.2 on Debian 9 to complete the process.

How to install PHP 7.2 on Debian 9?

Remember to include these PHP modules:

php7.2-mbstring php7.2-xmlrpc php7.2-gd php7.2-xml php7.2-cli php7.2-tidy php7.2-intl php7.2-curl php7.2-zip

Then, you need to change the PHP configuration in order to get better performance.

:~#  nano /etc/php/7.2/apache2/php.ini

And change the following:

file_uploads = On
allow_url_fopen = On
memory_limit = 256M
upload_max_filesize = 200M
max_execution_time = 360
date.timezone = Your-TIMEZONE

Press CTRL + O to save the changes and CTRL + X to exit.

Next, create a PHP file on /var/www/html/ to test it.

:~# nano /var/www/html/test.php
<?php
phpinfo();
?>

Restart Apache:

:~# systemctl restart apache2

Then, open it using the web browser. http://your-server/test.php. You will see this.

So, PHP is working.

3) Install Boltwire CMS on Debian 9

Boltwire CMS is very easy to install. To do this, we must first download it. In the terminal, write the following:

:~# cd /tmp/
:~# wget https://www.boltwire.com/files/6/boltwire6.02.zip
:~# unzip boltwire6.02.zip

Next, move the file to the Apache web root and change the permissions.

:~# mv boltwire /var/www/html/
:~# chown -R www-data:www-data /var/www/html/boltwire/
:~# chmod -R 755 /var/www/html/boltwire/

After this, it is necessary to create a new virtual host for Boltwire so that it can run perfectly:

:~# nano /etc/apache2/sites-available/boltwire.conf

And add the following:

<VirtualHost *:80>
     ServerAdmin admin@your_domain.com
      DocumentRoot /var/www/html/boltwire
     ServerName your-domain.com

     <Directory /var/www/html/boltwire>
          Options FollowSymlinks
          AllowOverride All
          Require all granted
     </Directory>

     ErrorLog ${APACHE_LOG_DIR}/your-domain.com_error.log
     CustomLog ${APACHE_LOG_DIR}/your-domain.com_access.log combined

</VirtualHost>

Obviously, replace your-domain with yours. Save the changes and close the file.

Enable the new virtual host and the rewrite module with the following command:

:~# ln -s /etc/apache2/sites-available/boltwire.conf /etc/apache2/sites-enabled/your-domain.conf
:~# a2enmod rewrite
:~# systemctl restart apache2

In my case the virtual domain is osradar.test. Remember to make the necessary changes.

Now we will have to complete the installation from the web.

Complete the installation using the web browser

Now, open your web browser and go to your server to complete the installation. You will see the following.

After creating the password, you will be asked by the password newly created and the id site.

Next, you can start to create.

Conclusion

Boltwire CMS is a good alternative for our personal blog. It is fast, easy to install and free. So this is a good opportunity to keep moving forward on our projects.

Please share this post with your friends.

The post How to install Boltwire CMS on Debian 9? appeared first on Linux Windows and android Tutorials.

CouchDB is a database manager for the web. It takes care of saving and storing NoSQL type data for server-side applications. It is widely used and its learning curve is very low.

On the other hand, CouchDB places a lot of emphasis on data replication as a persistent way to obtain data. That is, we will be able to connect multiple nodes and from there do the replication.

Of course, there are a lot of features and reasons why this project of the Apache Foundation is so important today.

So, let us start.

Install CouchDB on Debian 9

The application is available to be installed on various operating systems. Obviously, Linux has prepared installers. Even for Debian 9, there is a package repository of its own. This facilitates the installation of CouchDB quite a bit since we can do it from APT.

It is recommended that you read our post about APT.

So the first step is to connect to your server and run this command as root:

:~# echo "deb https://apache.bintray.com/couchdb-deb stretch main"   | tee -a /etc/apt/sources.list
deb http://apache.bintray.com/couchdb-deb stretch main

Next, you have to import the GPG key for the repository.

:~# curl -L https://couchdb.apache.org/repo/bintray-pubkey.asc | apt-key add -
OK

image

Next, install CouchDB on Debian 9 by running the following command:

:~# apt update
:~# apt install couchdb

During the installation, you will have to configure some things. First of all, you need to know if it is for a single node or for a cluster.

Then, you will have to define the IP address where the instance will be accessed. If you set 0.0.0.0 you will be able to access from any IP address.

And finally, define a root password.

So, that is it. Let us test it.

Testing CouchDB

The best way to test if everything went well is to access the CouchDB web GUI. For this, it is necessary that in your firewall you have opened port 5984. In case you use UFW you could do it in the following way.

:~# ufw allow 5984/tcp

Next, open your web browser and go to http://Your-server:5984/_utils and now you can log in.

And you can check the databases.

So, that is it.

Conclusion

CouchDB is clearly oriented to the professional web sector. However, its learning curve is low with respect to its power. Despite this, CouchDB is easily installable as we have seen.

Please share this post with your friends.

The post How to install CouchDB on Debian 9? appeared first on Linux Windows and android Tutorials.

Many companies are concerned about the security of their data, this is vital to maintain and safeguard the health of the company. Fortunately, solutions are available for it, as Nextcloud. With Nextcloud you can build your own professional and extensible cloud thanks to numerous plugins. It is one of the best-known applications within Linux for its extension, practicality, and ease of use.

On the other hand, Debian 9 is at its best and is a highly recommended option to install a Nextcloud server.

So, let us start.

1. Install Apache web server + PHP

To install correctly, a web server is required. In this case we will choose Apache because it is the most common and simple to use.

So, open a terminal or connect to your VPS using SSH and type:

:~$ su
:~# apt install apache2

By default, Debian starts and enables the service so it should already be running. On the other hand, it is also necessary to install PHP and some of its modules. Debian has older versions of PHP in its repositories so let’s upgrade to PHP 7.3. So, add the repository.

:~# wget -q https://packages.sury.org/php/apt.gpg -O- | apt-key add -
:~# echo "deb https://packages.sury.org/php/ stretch main" | tee /etc/apt/sources.list.d/ondrej.list
:~# apt install apt-transport-https
:~# apt update

Then, install PHP 7.3.

:~# apt install libapache2-mod-php php7.3 php7.3-xml php7.3-curl php7.3-gd php7.3 php7.3-cgi php7.3-cli php7.3-zip php7.3-mysql php7.3-mbstring

Next, it is necessary to modify some of the PHP options. To do this edit the configuration file.

:~# nano /etc/php/7.3/apache2/php.ini

And make the following changes:

memory_limit = 512M
upload_max_filesize = 200M
max_execution_time = 360
post_max_size = 200M

Do not forget, also edit your timezome. You can use CTRL + W to find the options quickly.

Finally, restart Apache to enable the PHP support.

:~# systemctl restart apache2

NOTE: If you are using a firewall, remember to enable ports 80 and 443 for Apache to work properly.

2. Install and configure MariaDB

The next step to install Nextcloud 16 on Debian 9 is to install and configure MariaDB.

Nextclooud 16 needs a powerful database manager to store the generated data. It is compatible with several, but MariaDB is in the Debian repositories and is MySQL compatible. So we will install this one.

:~# apt install mariadb-server

Next, you need to set the root password and other things. So, run the following:

:~# mysql_secure_installation

As you can see in the image, after defining the root password, you will be asked other questions about the configuration of MariaDB. For this post the answers are irrelevant, but we will answer like this: Y, N, Y, Y.

Then, create a new user and database for Nextcloud 16.

:~# mysql -u root -p
CREATE DATABASE nextcloud;
GRANT ALL PRIVILEGES ON nextcloud.* TO 'nextuser'@'localhost' IDENTIFIED BY 'nextpss';
FLUSH PRIVILEGES;
exit;

Now,we can install Nextcloud 16 on Debian 9.

3. Install Nextcloud 16 on Debian 9

Now, we can download it using wget and unzip to decompress it. Install these packages first.

:~# apt install unzip

Next, download it.

:~# cd /opt/
:~# wget https://download.nextcloud.com/server/releases/nextcloud-16.0.0.zip

After that, decompress it.

:~# unzip nextcloud-16.0.0.zip

Then, move it to the /var/www/html/ directory and changes the permissions.

:~# mv nextcloud/ /var/www/html/
:~# chown -R www-data:www-data /var/www/html/nextcloud/
:~# chmod -R 755 /var/www/html/nextcloud/

Now, you can open your web browser and complete the installation using the Nextcloud 16 web interface. Go to http://SERVER_IP/nextcloud and set the required information. For example, the MariaDB credentials or creating the admin account.

Next, you will see the dashboard.

And that is it. Now, you can enjoy Nextcloud 16 on Debian 9.

Install Nextcloud 16. Conclusion

Nextcloud 16 is a good alternative to set up your own private cloud at home or for your business. It is reliable, fast, secure and free, which makes it ideal for small businesses.

Please share this post with your friends.

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Install the latest version of Git from the source code

There is no reliable repository to install the latest version of Git on Debian 9 or Ubuntu 19.04. However, we can manually compile the source code. The process is not complicated and will help us to have current and fast Git.

First of all, you have to update the system.

:~$ su
:~# apt update && apt upgrade

Note: In case Ubuntu doesn’t have root enabled, you just need to type sudo before the commands.

After that, you need to install some packages to install Git.

:~# apt install build-essential make libssl-dev libghc-zlib-dev libcurl4-gnutls-dev libexpat1-dev gettext unzip

Then, it is necessary to know which is the latest stable version of Git. To do this, it is good to go to the program website. At the time of writing this article, it is 2.21.0 so the command to write is as follows.

:~# cd /tmp/
:~# wget wget https://github.com/git/git/archive/v2.21.0.zip -O latestgit.zip

Next, decompress it and move to the generated folder.

:~# unzip latestgit.zip
:~# cd git-2.21.0

Now, you can build and install Git. To do it, just run these commands:

:~# make prefix=/usr/local all
:~# make prefix=/usr/local install

Once the process is complete, you can verify which version is installed.

:~# git --version

With this, Git is now installed and ready to use.

Conclusion

Getting the latest version of Git in Debian 9 or Ubuntu 19.04 is not a complicated matter, however, it can be useful for the development of our applications. We have achieved this by manually compiling the application, this way it becomes simpler and safer.

Please share this post with your friends.

The post How to install the latest version of Git in Debian 9 or Ubuntu 19.04? appeared first on Linux Windows and android Tutorials.

First, let’s talk a little Java. Java is an Object Oriented programming language owned by Oracle. It is a compiled language, with its own rules and widely spread at educational and professional levels.

It is composed of three fundamental parts: JDK, JRE, and JVM. JDK is the Java development kit which contains the compiler and libraries needed to start creating applications with Java. The Java Runtime Environment (JRE) is the engine for running these applications. Last, the Java Virtual Machine (JVM) functions as an intermediate layer between the JRE and the operating system where Java applications run.

Java and Linux

Java is compatible with Linux, this means that it is possible to run, and build applications from your favorite distribution. The problem is that the version in the official repositories is based on OpenJDK. In short, this means that we will not be able to use it to create commercial applications, besides it is a community version with the advantages and disadvantages that it can present.

That’s why if you want to develop applications for third parties without having licensing problems, you should install Oracle Java.

Install Oracle Java thanks to a PPA

As I said before, installing Oracle Java is necessary if you are a developer. Fortunately, it is possible to do it in a quite simple way thanks to the Java Uprising PPA.

This repository automates the process of downloading, installing and configuring Oracle Java as a .deb package. Obviously, it downloads it from the Oracle website, configures it and allows us to set a default version.

For Ubuntu 18.04 and 18.10

First, you need to update the system.

:~$ sudo apt update && sudo apt upgrade

Once the installation is complete, the next step will be to add the java uprising repository.

:~$ sudo add-apt-repository ppa:linuxuprising/java

Finally, you can install Oracle Java. Then, you will see the license terms.

:~$ sudo apt install oracle-java12-installer

It’ll take a while, according to your internet connection.

Set Oracle Java 12 as default

This PPA brings with it a distributed tool in the form of a very useful package to set Oracle Java 12 as the default Java version of the system.

If you use Ubuntu the package oracle-java12-set-default has been installed as a recommended package in the installation of oracle-java12-installer package and it is not necessary to do anything else except verifying the installation.

:~$ java --version

On the other hand, if you want to install Java 12 but not the default one. So, you have to remove the oracle-java12-set-default package.

:~$ sudo apt remove oracle-java12-set-default

That’s it.

Conclusion

It is quite simple to install the proprietary version of Java, on Ubuntu and Debian, but if you are interested in learning about this programming language then you must do so.

Tell us your experience, do you use Java? Are you a Java developer? Tell us in the comments

Please spread this article through your social networks.

You can also read “5 very interesting plugins for netbeans“

The post How to install Oracle Java 12 on Ubuntu 18.04/18.10 and Debian 9? appeared first on Linux Windows and android Tutorials.

MediaWiki is an open source application written in PHP. Basically, it allows creating a wiki for our project in a simple way. It is used by many community and noncommunity projects to provide information to its users. Ideal for educational purposes, for example.

In like manner, MediaWiki has an API that developers can use to extend their projects. All this with great community support.

So, let us start to install MediaWiki on Debian 9.

1. Install Apache web server

The first step is to install Apache web server because MediaWiki is a web application. So let us install it.

:~$ su
:~# apt install apache2

When the installation is complete, Debian configures Apache to start by default. So now you can check the status of the service.

:~# systemctl status apache2

So, Apache is properly running.

2. Install PHP 7.3

Debian 9 Stretch has PHP 7.0 in its official repositories. It’s a great version of PHP but it’s getting a little out of date. So let’s install PHP 7.3 on Debian 9.

For it, we have a brilliant tutorial that you can follow in this link.

Next, install all the PHP modules required for MediaWiki.

:~#  apt install php7.3 php7.3-mysql libapache2-mod-php7.3 php7.3-xml php7.3-mbstring php7.3-apcu php7.3-intl  php7.3-gd php7.3-cli php7.3-curl

After that, you can do some extra configuration on PHP. To increase the PHP memory handling capacity. To do it, edit the PHP configuration file.

:~# nano /etc/php/7.3/apache2/php.ini

And make the following changes

upload_max_filesize = 200M
memory_limit = 128M

Finally, restart Apache.

:~# systemctl restart apache2

3. Install MariaDB

Now it is MariaDB’s turn. MariaDB is a free and open source database manager. It is very easy to learn but robust in features.

So, let us install it.

:~# apt install mariadb-server

Next, set a root password using the mysql_secure_installation script.

:~# mysql_secure_installation

You will be asked some configuration questions. In my case, I will answer like this: Y, N, Y, Y.

Then, it is necessary to create a new database for MediaWiki. Besides a MariaDB user as well.

:~# mysql -u root -p
CREATE DATABASE mediawikidb;
GRANT ALL PRIVILEGES ON mediawikidb.* TO 'mediawikiuser'@'localhost' IDENTIFIED BY 'mediawikipss';
FLUSH PRIVILEGES;
exit;

4. Install MediaWiki

Now you can install MediaWiki. To do this, you need to download it to the Apache root directory.

:~# cd /var/www/html/
:~# wget https://releases.wikimedia.org/mediawiki/1.32/mediawiki-1.32.1.tar.gz

After that, decompress it.

:~# tar -xfvz mediawiki-1.32.1.tar.gz

Next, remove the downloaded file and rename the generated folder.

:~# rm -r mediawiki-1.32.1.tar.gz
:~# mv mediawiki-1.32.1 mediawiki

So, open your web browser and access to your browser to start the installation. For example, http://SERVER_IP/mediawiki/mw-config/.

Then, it will show you a screen where you will see the software requirements and license terms.

Next, configure the database.

Next, choose the database engine.

Next, create the admin account. Scroll down and you have two choise, start the installation now or set some configuration.

In the next screen, you will be able to modify other options such as the sending of mail and the license of the articles.

Next, you can start the installation.

Now, the installation is complete.

Now, the screen shows a message where you have to download a configuration file and place it in the MediaWiki folder to complete the installation.

So, use the scp command on your host computer.

:~$ scp Path_file your-server:/home/your-home/

Then, on the server move it to the MediaWiki root directory.

:~# mv /home/your-home/LocalSettings.php /var/www/html/mediawiki/

Next, come back to your web browser and go to http://SERVER_IP/mediawiki/ and you will see your wiki.

So, that is it.

Conclusion

Having your own wiki for your projects can be new and useful. Especially if it is a collaborative project where you can provide information from an easy way.

Share this post with your friends.

The post How to install MediaWiki on Debian 9? appeared first on Linux Windows and android Tutorials.

I recently explained how to install PHP 7.2 in Debian, however, we already have a new version of PHP. In particular, I am talking about the 7.3 that incorporates multiple advantages. The vast majority of these advantages are applicable to Ubuntu. And so we let you know in the article on how to install PHP 7.3 in Ubuntu 18.04.

So let us go for it.

1.- Upgrade the system

Before we start we need to make sure Debian is completely up to date

So, open the terminal o access to your server using SSH, and run:

:~$ su
:~# apt update
:~# apt upgrade

Now we can continue with the installation without problems.

2. Verify the PHP version available on your system

You must be sure the change is worth it. If you already have PHP installed, you can show its version using the following command:

:~# php -v

In this case, it is not installed on the server, but you can check the coming version in the official Debian repositories.

:~# apt-cache search php

As you can see, the version in the Debian repositories is the 7.0 that is already starting to fall short for some quite powerful frameworks like Laravel.

3. Install PHP 7.3 on Debian 9

PHP 7.3 can be installed through an external repository. To do this, it is first necessary to install some previous packages.

:~# apt install ca-certificates apt-transport-https lsb-release

Next, you need to add the GPG key from the repository and add it to the Debian sources.

:~# wget -O /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg
:~# echo "deb https://packages.sury.org/php/ $(lsb_release -sc) main" | tee /etc/apt/sources.list.d/php7.3.list

After that, refresh the APT cache.

:~# apt update

When the APT cache is refreshed, you can do a search for PHP related packages again and you will notice the change.

:~# apt-cache search php

We will now have PHP version 7.3 available. You can install it along with some of its modules with the following command.

:~# apt install php7.3 php7.3-cli php7.3-xml php7.3-mbstring php7.3-mysql php7.3-xml

Next, we can show the PHP version installed and it should be 7.3.

:~# php -v

4. Test if PHP is working

Now it is time to test PHP. If you already have Apache or any HTTP server installed, just restart it. We will take Apache as a reference.

:~# systemctl restart apache2

However, if Apache is not installed, it is necessary to do so using the following command:

:~# apt install apache2 libapache2-mod-php

After that, it creates a PHP file in Apache’s root directory. For example, you can call it test.php.

:~# nano /var/www/html/test.php

And add the following:

<?php
phpinfo();
?>

Finally, open the web browser and go to http://SERVER_IP/test.php.

This shows that PHP is running correctly on your server or Debian 9 computer

Conclusion

PHP development is progressing at a good pace, with frequent and improved versions. PHP 7.3 includes some new features that facilitate the development and implementation of applications created with this language.

Installing PHP 7.3 on Debian 9 is not something within the reach of a few, but is something quite simple to do.

The post How to install PHP 7.3 on Debian 9? appeared first on Linux Windows and android Tutorials.

Yes, as you read it, Debian 9.8 has been released. Of course, it is a maintenance version for bug fixing. On the other hand, if you have a server running Debian, you will like this new version because it also includes numerous security patches. One of the applications that received an update was Ngnix. Apache’s rival web server par excellence will now be more secure and efficient, something you will surely appreciate.

On the other hand, not only Ngnix received love, but also PHP, OpenSSL, QEMU and other important applications for the professional use of Debian, have been patched. This translates into greater security and stability for the use of these services.

Debian 9.8 has been released and brings many bugfixes

Not everything in this new version of Debian translates into security enhancements. Many applications have benefited from bug fixes. For example, Wayland has fixed the possible integer overflow. In addition, Debian’s own installation is now more reliable because it is more tested.

In addition, PostgreSQL has been updated to a new upstream version. Not to be confused with version 10 but it is a maintenance version, which makes it more reliable and secure. In the development section, many Python libraries were corrected to be even more compatible with Python3.

Do not reinstall, just upgrade

This is a maintenance version, i.e. it does not introduce new features that justify a reinstallation. So all you have to do is keep your system up to date.

But soon we should have a Debian 10 where we will give the best of the supports.

The post Debian 9.8 has been released appeared first on Linux Windows and android Tutorials.

Apache Cassandra is a distributed NoSQL database based on an open-source “value-key” storage model written in Java. Being a business database manager, the Data is automatically replicated to multiple nodes for fault-tolerance. Replication across multiple data centers is supported. In addition, failed nodes can be replaced with no downtime.

There are many more features that make Apache Cassandra a reference in the sector of enterprise databases. For example, scalability is its other strength. Cassandra is used by many companies with many replicable nodes.

So, let us start to install Apache Cassandra on Debian 9.

1. Upgrade your system

First, you need to update the system. To do this, open a terminal and run.

:~$ su
:~# apt update && apt upgrade

After that, you will have an updated and robust system thanks to the security patches. So now you can continue.

2. Install Apache Cassandra

There are two ways to perform the installation. The first is through the binaries downloaded from the website. This is a simple way to achieve the installation, however, it is not the easiest and many may find it difficult.

Thus, we are going to use the .deb packages repository to make the installation as simple as possible and the best of all is that we will get the latest stable version.

So, add the Apache Cassandra repository.

:~# echo "deb http://www.apache.org/dist/cassandra/debian 39x main" | tee -a /etc/apt/sources.list.d/cassandra.sources.list

After that, add the public key.

:~# curl https://www.apache.org/dist/cassandra/KEYS | apt-key add -

NOTE: If you don’t have CURL installed, you can run the “apt install curl” command.

After that, you need to refresh the APT cache.

:~# apt update

Then, install Apache Cassandra.

:~# apt install cassandra

Now, you need to enable, start, and check the Cassandra service.

:~# systemctl enable cassandra
:~# systemctl start cassandra
:~# systemctl status cassandra

3. Configure Cassandra

On the Cassandra web site, the developers say: “For running Cassandra on a single node, the default configuration is enough, you shouldn’t need to change any configuration. However, when you deploy a cluster of nodes or use clients that are not on the same host, then there are some parameters that must be changed.”

So, let us change these parameters.

:~# nano /etc/cassandra/cassandra.yaml

First, the cluster name. Obviously. Replace the default by yours.

Next, you need to set the seeds of the cluster. You have to add the IP address separated by comma.

If you want to increase security you can change the storage port. However, remember to modify your firewall settings to make that port available. In the listen_adress parameter, you must add the IP address of your central node. This is what allows other nodes to communicate with this node. So, it is important that you change it.

With these configurations, you can start to use Apache Cassandra.

Conclusion

Although Apache Cassandra is a high-performance application used by many large enterprises, its installation is not complex. Their website offers useful information about this powerful tool.

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