A web server can be cataloged as an essential element of the network. Therefore, you must have a program that is the best and that is Nginx. Nginx is a lightweight, open source and widely popular web server that bases its success on performance when processing websites. Along with Apache web server are the two references within Linux for that purpose.

So, let’s start.

1. Upgrade the system

The first step in this process is to keep your system up to date. Therefore, connect to your server and run.

:~$ sudo apt update && sudo apt upgrade

With this, you will have a more stable system, robust and ready to start the installation.

2. Install required packages

To compile the Nginx source code, it is necessary to install some previous packages.

:~$ sudo apt install build-essential libpcre3-dev zlib1g-dev libssl-dev libatomic-ops-dev libxml2-dev libxslt1-dev libgeoip1 libgeoip-dev libgd-dev google-perftools libgoogle-perftools-dev libperl-dev

So, as you can see in the image, many packages related to compilation and package construction are installed.

3. Download and install Nginx

Now proceed to download the latest stable version of Ngnix from your website. Use the following command to do it

:~$ wget -c http://nginx.org/download/nginx-1.15.8.tar.gz

Note: At the time of writing this post the latest stable version of Ngnix is 1.15.8. First, find out which version you want to download and modify the previous command. It also work with Nginx 1.17.6.

Now, decompress the file.

:~$ tar -xvzf nginx-1.15.8.tar.gz

Now, create a new user for Nginx.

:~$ sudo useradd -s /sbin/nologin nginx

Next, enter the created directory and start the configuration.

:~$ cd nginx-1.15.8/
:~$ sudo ./configure --user=nginx --group=nginx --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --with-select_module --with-poll_module --with-threads --with-file-aio --with-http_ssl_module --with-http_v2_module --with-http_realip_module --with-http_addition_module --with-http_xslt_module --with-http_xslt_module=dynamic --with-http_image_filter_module --with-http_image_filter_module=dynamic --with-http_geoip_module --with-http_geoip_module=dynamic --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_auth_request_module --with-http_random_index_module --with-http_secure_link_module --with-http_degradation_module --with-http_slice_module --with-http_stub_status_module --with-http_perl_module --with-http_perl_module=dynamic --with-mail --with-mail=dynamic --with-mail_ssl_module --with-stream --with-stream=dynamic --with-stream_ssl_module --with-stream_realip_module --with-stream_geoip_module --with-stream_geoip_module=dynamic --with-stream_ssl_preread_module --with-google_perftools_module --with-cpp_test_module --with-compat --with-pcre --with-pcre-jit  --with-zlib-asm=CPU --with-libatomic --with-debug --with-ld-opt="-Wl,-E"

As you can see, the command is quite extensive because it requires that you indicate which modules or options will be enabled.

When you finish the configuration, you should see something like this.

So, install it.

:~$ sudo make && sudo make install

And that’s it.

4. Create a systemd service file for Nginx

To better manage Ngnix, create a file to make it a systemd service.

:~$ sudo nano /lib/systemd/system/nginx.service

And add the following:

[Unit]
Description=The Nginx 1.15.8 service
After=syslog.target network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
PIDFile=/usr/local/nginx/logs/nginx.pid
ExecStartPre=/usr/sbin/nginx -t
ExecStart=/usr/sbin/nginx
ExecReload=/usr/sbin/nginx -s reload
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true

[Install]
WantedBy=multi-user.target

For these changes to take effect, it is necessary to reload the systemd configuration.

:~$ sudo systemctl daemon-reload

Now, start Ngnix.

:~$ sudo systemctl start nginx

Finally, open your web browser and go to http://IP_SERVER. You should see this.

And that’s it.

Conclusion

Nginx is a great application to set up a web server. The installation from the source code brings the advantage of being lighter. This is useful if you want to have total control over its operation.

Please share this article with your friends.

The post How to install Nginx from the source code on Debian 10 / Ubuntu 18.04 / Ubuntu 19.04? appeared first on Linux Windows and android Tutorials.

Cockpit makes server management much easier

Cockpit is a web application that allows you to control one server or several Linux servers. Everything from a web interface that you can open from your favorite web browser. In this way, we can perform common and not so common tasks on the server with just a few clicks.

Using Cockpit It is easy to start containers, administer storage, configure networks, and inspect logs.

On the other hand, Cockpit gets along very well with after-server applications such as Ansible. This means that the integration with the server is practically complete. In addition, the application is quite well supported by its creators and is available for the largest Linux distributions.

So, we can say that Cockpit makes server management easier.

Install Cockpit on CentOS 8

In order for Cockpit to be able to read the proper information from the system, it is a good idea to update it first. To do this, connect to your server using SSH and run the following:

:~$ su
:~# dnf update

Now the system is ready for Cockpit.

Fortunately, Cockpit comes by default in the default CentOS 8 repositories. This causes the installation to be condensed in a single command.

:~# dnf install cockpit

Then, it will start downloading and installing all the necessary packages.

Cockpit is managed as a service. Therefore, we can start it, stop it and restart it in a similar way to Apache or MariaDB using systemctl. Then you have to start it:

:~# systemctl start cockpit

It is advisable that Cockpit is started with the system, if that is what you want, use this command:

:~# systemctl enable cockpit

Finally, to verify that everything has worked out correctly, you can check the status of the service.

:~# systemctl status cockpit

After that, we need to open the Cockpit ports in the firewall so that we can run it from the web browser.

:~# firewall-cmd --add-service=cockpit --permanent --zone=public
:~# firewall-cmd --reload
success

Now, we can use it from the web browser.

Using Cockpit

Once we access http://your-server:9090 we will see the following screen.

In this screen, you will have to log in with your system credentials. Then, you will see the Dashboard.

With Cockpit, you can see the system logs. But also the network settings. Even tasks like adding a bridge are done with a few clicks. You can also see the network activity.

On the left side, you will have all the options available. Also, an important aspect of the application is that it allows the management of system services graphically.

Finally, the application has a terminal emulator integrated with the system. This if you need to perform a specific command or something else.

So, now you can use it.

Conclusion

There are many tools that allow us to manage a server more effectively. Cockpit is one of those tools that with a bright and polished graphical interface can perform common tasks and not so common on a Linux server. Thus, in this post, you have learned to install it on CentOS 8. And see some of its modules.

So, you can learn more about CentOS 8 reading our posts.

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The post How to install Cockpit on CentOS 8? appeared first on Linux Windows and android Tutorials.

In case you did not know, Ejabberd is a messaging server that uses the XMPP protocol. It is open source and has a community version that will save us money, ideal if our company is small. Its main objective is to be fast and scalable, so, that it can be used in almost any scenario.

So, let us start to install Ejabberd on CentOS 7.

1. Upgrade the system and install glibc

First, you need to update the system. You know, with this you will have installed the latest security patches and you will be able to enjoy a more stable and secure system.

:~$ su
:~# yum update

Now, you have to install a required library. It is glibc.

:~# yum install glibc

So, now you have the system updated and with glibc installed, you can continue with the installation.

2. Download and install Ejabberd

The next step is to download the Ejabberd binaries from the website. In this case, I will use the binary in. RPM format. At the time of writing this post, the latest stable version of Ejabberd is 18.12.1.

:~# yum install wget
:~# wget https://www.process-one.net/downloads/downloads-action.php?file=/ejabberd/18.12.1/ejabberd-18.12.1-0.x86_64.rpm

After that, install the downloaded package using yum.

:~# mv downloads-action.php\?file\=%2Fejabberd%2F18.12.1%2Fejabberd-18.12.1-0.x86_64.rpm ejabberd.rpm
:~# rpm -ivh ejabberd.rpm

Note the following, the ejabberd initialization script is located at /etc/init.d/. In addition, the ejabberd user will be created.

3. Starting the Ejabberd service

Now it is necessary to work with the Ejabberd service, to start it or restart it when it is convenient.

All you have to do is copy the ejabberd.service file located in the /opt/ejabberd-18.12.1/bin/ folder to the /etc/systemd/system/ folder.

:~# cp /opt/ejabberd-18.12.1/bin/ejabberd.service /etc/systemd/system/

In order for the service to be recognized by systemd, it is necessary to refresh the services.

:~# systemctl daemon-reload

After that, enable and start the service. Finally, it is a good idea to check the status of the service.

:~# systemctl enable ejabberd
:~# systemctl start ejabberd
:~# systemctl status ejabberd

As you can see in the image above, everything is going well. It is now necessary to create an administrator account.

4. Create an administrator account and access from the web browser

To access the Ejabberd administration panel, it is necessary to create an administrator account. Let us go for it.

First, access the folder where the binary is.

:~# cd /opt/ejabberd-18.12.1/bin/

Then, use the following formula to create your user.

:~# ./ejabberdctl register user localhost your_password

Of course, replace user and your_password by yours. And localhost by your hostname.

After that, you have to edit one file to give administration rights to the new user.

:~# nano /opt/ejabberd/conf/ejabberd.yml

Then, restart the service to apply the changes.

:~# systemctl restart ejabberd

After that, set the right rules in the firewall for ejabberd. Remember, ejabberd uses the 5280 port.

:~# firewall-cmd --add-port=5280/tcp --permanent
:~# firewall-cmd --reload

Finally, open your web browser and go to http://SERVER_IP:5280/admin and log in. Remember the user is complete including the hostname. In my case is angelo@osradar.

So, that is it.

Conclusion

Ejabberd is a great alternative to deploy an XMPP server quickly and easily. That’s why Ejabberd is listed as one of the leading solutions in this segment. Its installation in CentOS 7 is quite simple and does not present too many drawbacks.

Share this post with your friends.

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Ajenti is a system administration panel compatible with many of the Linux distributions that exist. It is written in Python and requires very few resources. So, it is a great tool if we want to monitor the status and services of our system with a nice graphical interface, responsive and very functional. Of course, it is open source, under the BSD license which makes its source code be studied by those who want.

On the other hand, the application has a very friendly front-end created with Angular.js. This makes it compatible with most current browsers.

So, let us install Ajenti on Ubuntu 18.04 or Linux Mint 19.

1. Upgrade the system

It is always a good idea to update your system to receive the latest security updates. With this, you will have a more robust system and ready for action.

:~$ sudo apt update && sudo apt upgrade

Now, with the updated system, it is possible to continue with the installation without problems.

2.- Install required packages and add the external repository

Before installing Ajenti in Ubuntu it is necessary to install two necessary packages to do it. The first one is wget that will help us to download a file to add the repository. So, let us do it.

:~$ sudo apt install wget

The other package we must install as a dependency is python-imaging.

:~$ wget http://security.ubuntu.com/ubuntu/pool/universe/p/pillow/python-imaging_4.1.1-3build2_all.deb
:~$ sudo dpkg -i python-imaging_4.1.1-3build2_all.deb

After that, it is necessary to add the GPG key from the Ajenti repository to further improve package security and integrity.

:~$ wget http://repo.ajenti.org/debian/key -O- | sudo apt-key add -

Then, run the following command to add the Ajenti repository to the system repository list.

:~$ echo "deb http://repo.ajenti.org/ng/debian main main ubuntu" | sudo tee /etc/apt/sources.list.d/ajenti.list

Finally, install Ajenti.

:~$ sudo apt update
:~$ sudo apt install ajenti

After that, you have to enable and start the service. You can also check the service status. To do it, run these commands.

:~$ sudo systemctl enable ajenti
:~$ sudo systemctl start ajenti
:~$ sudo systemctl status ajenti

Ajenti runs through the port 8000. So, if you are using a Firewall, remember to open that port.

So, you can open the web browser and go to http://SERVER_IP:8000.

3. Install Ajenti V Plugin

Ajenti V plugin is a set of plugins that are installed to Ajenti and increase its power. Thanks to this you will be able to manage MySQL or Apache and it is very useful. To do so, execute the following command:

:~$ sudo apt install ajenti-v ajenti-v-nginx ajenti-v-mysql ajenti-v-php7.2-fpm php7.2-mysql

So, restart Ajenti.

:~$ sudo systemctl restart ajenti

And go back to the web browser to log in. The user is root and the password is admin.

Now, you will see this screen. In it, you have the main info system.

After that, you can also see the plugins section.

You also have a utility that will allow you to use a small program of notes in the application.

So, you can also manage a MySQL instance.

Or you can manage the Firewall.

There is also a File manager utility.

So, that’s it. Enjoy Ajenti.

The post Install Ajenti Control Panel on Ubuntu 18.04 and Linux Mint 19 appeared first on Linux Windows and android Tutorials.

Foreman is a complete lifecycle management tool for physical and virtual servers. One of its most powerful features is to provide the opportunity to manage multiple servers from a single web interface. In addition, you can perform multiple tasks on several occasions. That is, task automation

Moreover, it is configurable through plugins and an extensive API development. So, let’s install Foreman.

1. Edit /etc/hosts file

First of all, it is necessary to update the /etc/hosts file so that it points to the hostname of the server.

:~$ sudo nano /etc/hosts

Next, set the correct hostname.

:~$ sudo hostnamectl set-hostname foreman.osradar.local

Now, you can continue.

2. Install some required packages

Before starting the Foreman installation it is necessary to install some necessary packages.

:~$ sudo apt install ca-certificates wget

Among the installed packages is wget that I will use to download the file to add the Foreman repository.

3. Install Foreman from an external repository

Now the next step is to install Foreman, however, I will do it adding an external repository to do it later from APT.

First, add the puppet repository.

:~$ wget https://apt.puppetlabs.com/puppet5-release-bionic.deb

Then, install the package.

:~$ sudo dpkg -i puppet5-release-bionic.deb

Now, you can add the Foreman repository.

:~$ echo "deb http://deb.theforeman.org/ bionic 1.20" | sudo tee /etc/apt/sources.list.d/foreman.list
:~$ echo "deb http://deb.theforeman.org/ plugins 1.20" | sudo tee -a /etc/apt/sources.list.d/foreman.list
:~$ wget -q https://deb.theforeman.org/pubkey.gpg -O- | sudo apt-key add -

Then, install Foreman installer package.

:~$ sudo apt install foreman-installer

Finally, run the installer.

:~$ sudo foreman-installer

It will take a while because it will download several packages and perform the entire installation process. If all goes well, you will find the credentials to access along with the address to which you should go from the web browser.

You will see this.

If your Foreman host is not listed, then run this command.

:~$ sudo /opt/puppetlabs/bin/puppet agent --test

And that’s it.

Conclusion

As you can notice, the installation of Foreman is something not very complex to do in Ubuntu 18.04. It is an extraordinary tool to manage multiple servers and services.

Any modern server is able to run this application without problems, however, take into account the number of dependencies needed. I would tell you that 16Gb of Ram should suffice.

If you want to broaden your knowledge, I recommend you visit Foreman’s official documentation to take full advantage of this great tool.

The post How to install Foreman on Ubuntu 18.04? appeared first on Linux Windows and android Tutorials.

There are many applications for detecting “intruders” on a network. However, today I’ll tell you about OSSEC which is open source and free, quite adaptable to many circumstances.

OSSEC is a Host Intrusion Detection System (HIDS). It is responsible for analyzing the event logs of the operating system, checking the integrity of the operating system, audits of Windows computer logs, detection of rootkits, real-time alerts and active response to attacks.

Today, I will install it on Ubuntu 18.04.

1. Upgrade the system

First, you need to update the system. This ensures that you have the latest security updates and improve system stability. Recommended before you start doing anything on the server.

:~$ sudo apt update && sudo apt upgrade

In the end, you will have the system updated.

2.- Install some required packages

Now it is necessary to install some necessary packages to continue with the OSSEC installation. For example, wget to download it and build-essential for compile the program.

:~$ sudo apt install -y wget unzip make gcc build-essential

Then, you can continue.

3. Install Apache web server

OSSEC requires a web server to run its web agent. There are many alternatives, but I will use Apache.

:~$ sudo apt install apache2

Next, enable and start the service.

:~$ sudo systemctl enable apache2
:~$ sudo systemctl start apache2

4. Install PHP and other packages

The next step is to install PHP. PHP is a programming language for the web. I will use this section to install other packages useful and necessary for OSSEC.

:~$ sudo apt install -y php php-cli php-common libapache2-mod-php apache2-utils sendmail inotify-tools

5. Download and install OSSEC

Now it’s time to install OSSEC in Ubuntu, but first, you must download it.

:~$ wget https://github.com/ossec/ossec-hids/archive/3.1.0.tar.gz

Then, decompress it.

:~$ tar -xvzf 3.1.0.tar.gz

Then, enter the unzipped folder and start the installation script. Look at the images to answer the questions properly. First, choose the installation language.

:~$ cd ossec-hids-3.1.0/
:~$ sudo sh install.sh

The following questions are about the OSSEC services.

Next, the build process will start.

Finally, the installation will end. You will see this.

So, start the OSSEC service.

:~$ sudo /var/ossec/bin/ossec-control start

So, if you want to stop the service, run:

:~$ sudo /var/ossec/bin/ossec-control start

6. Install OSSEC web UI

In order to manage better and an easy way, OSSEC is recommended to install its web interface.

:~$ cd /srv/
:~$ sudo git clone https://github.com/ossec/ossec-wui.git

Then, move it to /var/www/html folder.

:~$ sudo mv /srv/ossec-wui /var/www/html

Next, run the installation script.

:~$ cd /var/www/html/ossec-wui
:~$ sudo ./setup

Now you have to assign permissions to the folder. In addition, it is also necessary to change the owner of the folder.

:~$ cd 
:~$ sudo chown -R www-data:www-data /var/www/html/ossec-wui/
:~$ sudo chmod -R 755 /var/www/html/ossec-wui/

Finally, enable the rewrite module on Apache2 and restart it.

:~$ sudo a2enmod rewrite
:~$ sudo systemctl restart apache2

Now, open your web browser and go to HTTP://IP_SERVER/ossec-wui/

As you can see, everything is OK.

Conclusion

As you can see, the installation is really simple and should not take more than 1 hour. With this great application, you can keep track of events on your network in order to search for “intruders” and possible unfortunate situations.

You can also read How to install GLPI on Ubuntu 18.04?

Please share this post with your friends.

The post How to install OSSEC HIDS on Ubuntu 18.04? appeared first on Linux Windows and android Tutorials.

OrangeScrum is a fantastic open source project management software. It is ideal for small and medium-sized companies or work teams that are looking for orders and systematize the steps to carry out the project in question.

With this program, you will be able to plan, start, scale and launch your project in a very orderly way. You can Create and assign tasks with utmost clarity and timelines. Track task progress, contribute to the discussion threads, provide timely updates and track time spent on tasks effortlessly.

So, let’s install OrangeScrum on Ubuntu 18.04 LTS.

1. Upgrade the system

First of all, it is convenient to update the system. This ensures that all security updates are installed.

:~$ sudo apt update && sudo apt upgrade

The consequence of doing this step is that you will have the safety patches installed and your system will be more reliable and safer.

2. Install Apache web server

To install OrangeScrum on Ubuntu 18.04 you need an HTTP web server. There are many options, but the most recommended for this program is Apache web server.

:~$ sudo apt install apache2

Next, enable and start the apache service:

:~$ sudo systemctl enable apache2
:~$ sudo systemctl start apache2

Next, you can check the apache service.

:~$ sudo systemctl status apache2

Now, open your web browser and go to HTTP://IP_SERVER. If you this something like this, then, apache is correctly installed.

Now is PHP’s turn.

3. Install PHP

OrangeScrum is developed in PHP. Specifically in CakePHP. Therefore, it is necessary to install this language and its modules. Here I will also install other packages necessary for OrangeScrum to run smoothly.

:~$ sudo apt install unzip wget php7.2 php7.2-bcmath php7.2-cgi php7.2-cli php7.2-common php-curl php7.2-dba php7.2-enchant php7.2-fpm php7.2-gd php7.2-imap php7.2-intl php7.2-ldap php7.2-mbstring php7.2-mysql php7.2-opcache php-imagick php-memcache php7.2-soap php7.2-tidy php7.2-xml php7.2-zip libapache2-mod-php7.2 xvfb libfontconfig wkhtmltopdf

Then, you have to edit the PHP configuration file.

:~$ sudo nano /etc/php/7.2/apache2/php.ini

In this file, you have to set this options.

post_max_size = 200M
upload_max_filesize = 200M
max_execution_time = 300
memory_limit = 512M
max_input_vars = 5000

Note: To make the process easier, you can press CTRL + W to find exactly the parameter to edit.

Finally, restart apache2.

:~$ sudo systemctl apache2

Now, you can proceed with MariaDB.

4. Install MariaDB

MariaDB is a relational database manager derived from MySQL. To use OrangeScrum correctly you need to install it.

:~$ sudo apt install mariadb-server

Next, you can set a root password with mysql_secure_installation script. You can also configure other things.

:~$ sudo mysql_secure_installation

After defining the root password, you will be asked other questions. I answered N, N, Y, Y.

Next, you have to create the Database and user for OrangeScrum.

:~$ sudo mysql -u root -p
CREATE DATABASE orangescrum;
GRANT ALL PRIVILEGES ON orangescrum.* TO 'orangescrumuser'@'localhost' IDENTIFIED BY 'orangescrumbpss';
FLUSH PRIVILEGES;
exit;

Next, create a file to disable strict mode for MariaDB.

:~$ sudo nano /etc/mysql/conf.d/disable_strict_mode.cnf

And add the following:

[mysqld]
sql_mode="IGNORE_SPACE,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

Finally, restart MariaDB.

:~$ sudo systemctl restart mariadb

And that’s all for MariaDB.

5. Install OrangeScrum

Now, you can install OrangeScrum. However, first download it.

:~$ cd /tmp
:~$ wget https://www.orangescrum.org/free-download/418ae4d8ef1309695804a7837cd4fc65/ubuntu18-php7 -O orangescrum-ubuntu18-php7.zip

Once the installation is complete, decompress the file.

:~$ unzip orangescrum-ubuntu18-php7.zip

Next, copy the folder to the Apache document root on /var/www/html/

:~$ sudo cp -r orangescrum-orangescrum-ubuntu18-php7 /var/www/html/orangescrum-master

Change the directory to orangescrum-master.

:~$ cd /var/www/html/orangescrum-master

Now, copy the orangeScrum database to the local instance. This is necessary to initialize the database.

:~$ sudo mysql -u orangescrumuser -p orangescrumdb < database.sql

Then, it is necessary to place the MariaDB credentials in the database.php file of OrangeScrum.

:~$ sudo nano app/Config/database.php

And put your credentials.

class DATABASE_CONFIG {

public $default = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'localhost',
'login' => 'orangescrumuser',
'password' => 'password',
'database' => 'orangescrumdb',
'prefix' => '',
'encoding' => 'utf8',
);
}

Obviously, replace whatever you have to replace. For example, the password.

Next, it is necessary to set the credentials to the SMTP email server.

:~$ sudo nano app/Config/config.ini.php

And put your information.

Change the owner of the folder. Next, change the permissions.

:~$ sudo chown -R www-data:www-data /var/www/html/orangescrum-master/
:~$ sudo chmod -R 775 /var/www/html/orangescrum-master/

And enable the PHP and Apache modules. Finally, restart apache.

:~$ sudo phpenmod mbstring
:~$ sudo a2enmod rewrite
:~$ sudo a2enmod headers
:~$ sudo systemctl restart apache2

Now, you have the complete the installation on the web browser.

6. Accessing to the Web Interface

The last step is to access the web interface through the web browser. To perform the Login process.

Go to HTTP://IP_SERVER/orangescrum-master/

Create the user and then log in.

Then, you will see this.

And that’s it.

Conclusion

In any organization it is necessary to have a planning before starting a large project or a more basic one. So, OrangeScrum emerges as a very appealing alternative for small and medium enterprises.

You can also read “How to install Wekan on Debian 9“.

Please share this article with your friends.

The post How to install OrangeScrum on Ubuntu 18.04 LTS /Mint 19 / Debian 9 ? appeared first on Linux Windows and android Tutorials.

Open Source Social Network emerges as a response to the many data security issues of the major companies behind the major social networks in the world. With a powerful but very intuitive web interface, it allows you to create your own social network.

So, let’s install it on Ubuntu Server 18.04.

1. Upgrade the system

Before starting the whole installation process, it is advisable to update the whole system. This ensures that you have the security patches installed on your computer.

:~$ sudo apt update && sudo apt upgrade

As I said before, with this you will have a more stable and safer system.

2. Install Apache web server

Open Source Social Network is a web-based solution. Therefore, it is necessary to install an HTTP web server to host it on a server. In this case, the chosen one will be apache for its simplicity of use.

:~$ sudo apt install apache2

Then, enable and start the service. Next, check the service status.

:~$ sudo systemctl enable apache2 
:~$ sudo systemctl start apache2
:~$ sudo systemctl status apache2

Finally, open a web browser and go to HTTP://IP_SERVER. If you see something like this, apache is correctly installed.

It Works!!

3. Install PHP 7.1

Here’s a little problem. Ubuntu 18.04 comes with PHP 7.2 in its official repositories, however, Open Source Social Network does not support PHP 7.2. So, you have to install PHP 7.1 from an external repository. It’s not complicated, you’ll see.

:~$ sudo add-apt-repository ppa:ondrej/php

Then, install PHP 7.1

sudo apt install php7.1 php7.1-mysql php7.1-curl php7.1-json php7.1-cgi libapache2-mod-php7.1 php7.1-mcrypt php7.1-xmlrpc php7.1-gd php7.1-mbstring php7.1 php7.1-common php7.1-xmlrpc php7.1-soap php7.1-xml php7.1-intl php7.1-cli php7.1-ldap php7.1-zip php7.1-readline php7.1-imap php7.1-tidy php7.1-recode php7.1-sq php7.1-intl

Now you have to check that PHP is working properly with apache. Create a file named example.php in /var/www/html and add the following.

:~$ nano /var/www/html/example.php

<?php
phpinfo();
?>

Now, open your web browser and open it. HTTP://IP_SERVER/example.php if you see the PHP info, then, everything is OK.

4. Install MariaDB

Now you have to install and configure MariaDB as a database manager. This is the default Open Source Social Network. Fortunately, MariaDB is very popular and is available in the main repositories.

:~$ sudo apt install mariadb-server

Next, you have to secure the installation with mysql_secure_installation script. With that script, you can set a root password and other things more.

:~$ sudo mysql_secure_installation

As you can see, I answered the question that way: Y, N, Y, Y.

Next, you have to create a database and an user for Open Source Social Netwok.

:~$ sudo mysql -u root -p

CREATE DATABASE ossndb;
USE ossndb;
GRANT ALL PRIVILEGES ON ossndb.* TO 'ossnuser'@'localhost' IDENTIFIED BY 'ossnpss';
FLUSH PRIVILEGES;
exit;

You can install Open Source Social Network.

5. Install Open Source Social Network

Finally, you can install it. First, download it.

:~$ cd /tmp/
:~$ wget https://www.opensource-socialnetwork.org/download_ossn/latest/build.zip

Then, decompress it.

:~$ unzip build.zip

The next step is to copy the folder to the Apache directory. Create a new folder for the application data and assign them writing permission.

:~$ sudo cp -r ossn /var/www/html/
:~$ sudo mkdir /var/www/html/ossn_data
:~$ sudo chown -R www-data:www-data /var/www/html/ossn/
:~$ sudo chmod -R 755 /var/www/html/ossn/
:~$ sudo chown -R www-data:www-data /var/www/html/ossn_data

Next, create a virtual host for Open Source Social Network.

:~$  sudo nano /etc/apache2/sites-available/ossn.conf

And add the following:

<VirtualHost *:80>
ServerAdmin angelo@osradar.com
DocumentRoot /var/www/html/ossn
ServerName ossn.osradar.local

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

ErrorLog ${APACHE_LOG_DIR}/ossn_error.log
CustomLog ${APACHE_LOG_DIR}/ossn_access.log combined

</VirtualHost>

Then, enable it and enable the rewrite module. Finally, restart apache.

:~$ sudo a2ensite ossn.conf
:~$ sudo a2enmod rewrite
:~$ sudo systemctl restart apache2

Next, edit your /etc/hosts.

:~$ sudo nano /etc/hosts

And add the configuration to access. In short, the IP address and the server name.

192.168.1.36 www.ossn.osradar.local ossn.osradar.local

And that’s it. You can finish the installation from the web interface.

6. Completing the installation

Now, access from the web browser. In my case, the direction is: HTTP://ossn.osradar.local. In the next screen, you will see all the installation prerequisites. If all of them are in green color, then you can continue.

Next, you have to set the site settings. Add the database information previously configured.

Next, create the admin account.

If everything went right, you’ll see a screen like this.

Now, you can log in with your credentials.

And you will see the dashboard.

And now you can use the program.

Conclusion

The OSSN installation is not duplicated in Ubuntu 18.04 and can help you to create your own social network using a web interface in an easy and dynamic way.

Please share this article with your friends.

The post How to install Open Source Social Network on Ubuntu Server 18.04? appeared first on Linux Windows and android Tutorials.

Tomcat is a software developed with Java that serves as a web server with support for servlets and JSPs. It is developed and updated by members of the Apache Software Foundation and independent volunteers. It is also very easy to set up to get up and running and has a lot of documentation.

So, let’s install it on Fedora 29.

1. Check the Java Version

The first step to install Tomcat in Fedora is to check if you have Java installed. Most likely, yes, but it’s still better to be sure.

Open a terminal and run:

:~$ java -version

As you can see in the image above Java is installed correctly. So, you can continue with the installation.

2. Download and Install Tomcat on Fedora

Now, proceed to download Tomcat from its website. At the time this article has been written, the latest stable version is 9.0.12. So, install wget and then download Tomcat.

:~$ sudo dnf install wget

:~$ cd /usr/local
:~$ sudo wget http://www-us.apache.org/dist/tomcat/tomcat-9/v9.0.12/bin/apache-tomcat-9.0.12.tar.gz

Then, decompress the downloaded file.

:~$ sudo tar -xvzf apache-tomcat-9.0.12.tar.gz

Next, rename the folder to make the process easier.

:~$ sudo mv apache-tomcat-9.0.12 tomcat9

Now, you need to configure environment variables. First, export the CATALINA_HOME variable.

:~$ sudo echo "export CATALINA_HOME="/usr/local/tomcat9"" >> ~/.bashrc

After that, refresh the bash.

:~$ source ~/.bashrc

3. Setting admin user

In order to manage Tomcat, it is necessary to create an administrator user who can perform all the essential tasks that the application allows to do. To do this, you need to edit the file tomcat-users.xml localized on /usr/local/tomcat9/conf/ directory.

:~$ sudo nano /usr/local/tomcat9/conf/tomcat-users.xml

And add the following before </tomcat-users>:

<role rolename="admin-gui" />
<user username="admin" password="Your_Password" roles="manager-gui, admin-gui" />

4. Using Tomcat

Before you start using Tomcat, you need to start it.

:~$ cd /usr/local/tomcat9
:~$ sudo ./bin/startup.sh

Now, you can open the web browser and go to http://IP_ADDRESS:8080/ and you will see this:

And to visit the manager page, go to http://IP_ADDRESS:8080/manager/html

By entering your username and password, you will be able to access the manager section.

And that’s it.

Conclusion

Tomcat is needed to develop applications with JSP. It is free which minimizes expenses for small or educational projects. It is also well documented and easy to use. Its installation in Fedora 29 is really easy and only requires a few essential commands.

The post How to install Tomcat on Fedora 29? appeared first on Linux Windows and android Tutorials.

Docker is an open source project designed to automate the large-scale deployment of applications within containers. The idea of doing this is to provide layers of abstraction that allow a program to run regardless of the operating system it runs. So, this is very useful for the sysadmin who manage many different computers.

Combining Docker with ubuntu 18.04 is practically a safe bet for the efficiency and ease of handling of containers.

0. Prerequisites

As you’ll see later, installing Docker on Ubuntu 18.04 is really simple. However, it requires that you have some knowledge about the use of the terminal.

In addition, your user should be able to run commands as root, because it requires installing additional packages and adding repositories.

Finally, it is recommended that you access the server using ssh with strong passwords.

1. Upgrade the system

The first step to install Docker in Ubuntu 18.04, is to update the system. I always recommend doing so because it is necessary to have a robust and secure system and this is obtained by installing the latest security patches issued by the Linux distribution you use, in this case, Ubuntu. So, run this command:

:~$ sudo apt update && sudo apt upgrade

In the end, you will have a more secure system and ready to continue the installation.

2. Add the Docker repository

Docker does not come by default in Ubuntu repositories, therefore, you have to add the particular Docker repository to install it via APT in an easy and secure way. However, first, you need to install some necessary packages.

:~$ sudo apt-get install apt-transport-https ca-certificates curl gnupg software-properties-common

Now add the GPG key from the Docker repository. This is to add even more security to the packages that will be downloaded.

:~$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

Then add the repository in question.

:~$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable"

Now you can proceed with the installation.

3. Install Docker on Ubuntu 18.04

It’s time to install Docker. Run the following command.

:~$ sudo apt install docker-ce

At the end of the installation. Have the service run at system startup.

:~$ sudo systemctl enable docker
:~$ sudo systemctl start docker

To ensure that Docker is fully functional, it is a good idea to check the status of the service.

:~$ sudo systemctl status docker

Finally, look at the Docker Version.

:~$ docker -v

Now that Docker is installed correctly, let’s do the first tests.

4. First steps

Docker has a lot of images for almost everything. It is necessary to look for the one we want, download it and use it. For example, I will look for an image that contains a LAMP server.

:~$ sudo docker search

As you can see in the image, there are several options. Choose the one you want and then download it.

:~$ sudo docker pull nickistre/ubuntu-lamp-wordpress

Now you can use it. If you want to list all the images you have installed. You can do it with this command.

:~$ sudo docker images

5. Run Docker without root privileges

So far you have run Docker as a root user, but this is not advisable. To run Docker without user privileges, run.

:~$ sudo usermod -aG docker $(whoami)

Then restart the computer and it’s done.

Conclusion

Docker is a novel technology and comes in a frank ascent. Many sysadmins see it as an essential part of their work. As you may have noticed, installing Docker on Ubuntu 18.04 is not difficult.

Tell us, have you used Docker? Do you work with Docker?

You can also read “How to install Docker on CentOS 7?“.

Please spread this article through your social networks

The post How to install Docker on Ubuntu 18.04? appeared first on Linux Windows and android Tutorials.