Linux Tutorials on the topic “centos”

  • How to install Fail2Ban on CentOS 7

    centos Author: Antonio ValenciaTags: , , , Comments: 0Published: Feb 09, 2016

    Most Linux servers offer an SSH login via Port 22 for remote administration purposes. This port is a well-known port, therefore, it is often attacked by brute force attacks. Fail2ban is a software that scans log files for brute force login attempts in real-time and bans the attackers with firewalld or iptables. This tutorial shows the installation and configuration of Fail2Ban with firewalld on CentOS 7.

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  • Left 4 Dead dedicated server install guide for CentOS

    centos Author: Antonio ValenciaTags: , Comments: 0Published: Feb 08, 2016

    Gaming servers are widely searched for by the internet-savvy online gamers. L4D or the Left 4 Dead is a popular game played online. With multi and single player mode, and newer version L4D 2 in the market, available with all its online cheat codes, many a gamer find this game very compelling. Gaming servers enjoy heavy inbound traffic. Installing a gaming console on a Linux distribution server such as CentOS may seem a daunting task, for a new user to Linux systems. Listed below are steps to configure, install, update and run the L4D server on Linux distribution like CentOS.

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  • Thoughts on Monitoring file changes with Linux over the network

    linux Author: stefbonTags: , , , , , , Comments: 0Published: Feb 05, 2016

    Monitoring a directory for changes with Linux is possible through the well-known mechanism inotify. With inotify it's possible to set a watch on a directory, configure it to watch events on the contents, and you'll receive messages on a file descriptor when something happens. This works perfectly when the directory is on local storage, like a hard drive, SSD or a USB drive, But it is not sufficient when the directory is on a network filesystem when the storage is on another computer. Another user working in the same directory, connected via the same or another filesystem, can remove a file and the watch you've set on it will not get notified.

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  • How to reset the root password on Linux and FreeBSD

    tux Author: Manh.LuongTags: , , , , Comments: 2Published: Feb 03, 2016

    Listed below are the step by step procedures to reset the root password in different versions of CentOS, CoreOS, Debian, Ubuntu and FreeBSD. Begin this procedure by booting your server into single user mode.

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  • How to use Docker in a practical way (part 1 - Introduction)

    linux Author: Bill ToulasTags: , , , , , , Comments: 3Published: Jan 25, 2016

    It is not an uncommon situation, for early adopters of newly introduced concepts and technologies, to be totally confused when these can fundamentally change the ways of developing and delivering services. Especially when everybody talks about something like Docker, and how awesome and game changing it is. This confusion happens when we try things early on and rushing straight to testing them without grasping the whole concept and background of this newly introduced technology.

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  • Run Windows applications on Linux with Crossover 15

    linux Author: Bill ToulasTags: , , , , , , , , Comments: 0Published: Dec 23, 2015

    Codeweavers has released a new major version of Crossover, the popular Microsoft Windows compatibility layer which is now based on Wine 1.8. The software is commercial and it costs around $40, but there is also a two-week trial version which is fully functional and can be downloaded for free. For this quick guide, I will be using the latter to show how you can install, set up, and run Windows executables with Crossover 15.

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  • How to use custom commands in LibreOffice

    ubuntu Author: Bill ToulasTags: , , , , , , Comments: 1Published: Dec 22, 2015

    LibreOffice is one of the most important pieces of free software, allowing many of us to work, study, and share information. Although the software features many tools and capabilities, the spectrum of possible uses for each and everyone out there is so wide, that it is simply impossible to cover every special need with hotkeys and shortcuts. However, LibreOffice can be set to support user-created commands that can essentially help us increase our productivity.

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  • Advanced Audio Control on Linux

    linux Author: Bill ToulasTags: , , , , , , Comments: 0Published: Dec 14, 2015

    Linux audio control is as messed up as the Linux audio system structure. The default and only option of setting the volume level may be enough for the majority of users out there, but it certainly isn't the best when you want to set specific audio levels, or define individual settings for different audio sources, etc. Here is a post on a selection of utilities that could help you get the sound you want on your Linux system.

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  • How to use snapshots, clones and replication in ZFS on Linux

    tux Author: RamadoniTags: , , , , , Comments: 6Published: Dec 12, 2015

    In the previous tutorial, we learned how to create zpool's and a ZFS filesystem or dataset. In this tutorial, I will show you step by step how to work with ZFS snapshots, clones, and replication. Snapshot, clone and replication are the most powerful features of the ZFS filesystem.

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  • How to connect your Android device on Ubuntu Linux

    ubuntu Author: Bill ToulasTags: , , , , , Comments: 7Published: Dec 10, 2015

    Buying a media device that needs a special driver and/or connectivity suite to navigate and update its contents is a common case nowadays, and has been ever since manufacturers decided that it would be a good idea to just limit the access that users can have on the products that they bought. This may not be a huge problem to Windows and Mac OS users who can simply download the manufacturer's suite and use it to connect to their device, but Linux is often (if not always) left unsupported in that part. The first time I encountered this problem was with the first generation of iPods and Creative Zen players that refused to show any contents on the File Manager when connected via the USB port, and then came the newest generations of Android devices which do the same. In this quick guide, we will see how we can overcome this problem, and connect our media device on our Linux system.

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What is CentOS?

CentOS or Community Enterprise Operating System is a community driven enterprise-class GNU/Linux distribution that uses the upstream sources of Red Hat Enterprise Linux as it basis. This RHEL fork is fully compatible with Red Hat's system, but it is free of price, certification requirements and support services. This fact quickly raised the popularity of CentOS among server administrators and other demanding sectors of the corporate environment, so the project ended up being acquired by Red Hat in 2014, who also hired the head developers of the project. CentOS however remains independent as an entity, focused in the development of open source solutions and led by their own governing board.


Why use CentOS?

As CentOS is basically a RHEL fork, it boasts top notch security features that meet the increased needs of web servers in that sector. Red Hat employs a large team of experts that work on locating and filling security holes in a daily basis. These fixes are then circulated through critical updates that CentOS receives regularly. This procedure ensures the utmost level of security that CentOS users enjoy without spending a nickel.

Another factor that is critical for enterprise grade systems is their stability. Being a RHEL fork, CentOS features great operational rigidness and solid systems implementation that are reliable for any use case. CentOS is known for using older and more stable and tested versions of software packages that are performing more predictably and feature very low failure and bug rates. All packages are carefully selected and tested for their interoperability and proper functionality, so while CentOS may not feature the latest and greatest software, it will certainly allow you to work without any nasty surprises.

The third critical factor that makes CentOS unique among enterprise level operating systems is the wide spectrum of hardware architectures that it supports. CentOS can work seamlessly on 32 or 64-bit Intel and ARM systems, PowerPC (Apple Macintosh), IBM eServers, DEC Alpha and SPARC.


HowtoForge and CentOS

Harvesting the sheer power of systems like CentOS is never a simple case, but HowtoForge deep expertise can help you get there step by step, and through complete and easily understandable tutorials. Our guides concern the installation and configuration of open server solutions on CentOS, establishment of secure SSH connections, utilization and setting up of cloud services or Apache servers, implementation of project management solutions and other sophisticated office utilities, realization of rock solid website hosting, performance RAID arrays management and configuration, creation of SQL databases, Joomla and Drupal platforms installation and integration. HowtoForge offers over four hundred content rich tutorials that explain the various possible CentOS configurations and uses in great detail. Whether you are a new user that just installed CentOS for the first time, or an experienced professional that works with enterprise-class systems for years, exploring our tutorials database will surely expand your knowledge and enhance your web-mastering abilities.

This is of course only a fraction of the total volume of information that can be found in HowtoForge website. Learn more about CentOS and other GNU/Linux distributions by visiting our helpful community forums. An experienced user is always likely to answer to any of your questions/problems.