lvm howto

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  • LVM Management in CentOS/Red Hat 7 Linux

    LVM (Logical Volume Manager) is the recommended partition method for CentOS/Red Hat 7 Linux. Specially, if we work on Mail Server, File Server, FTP Server, Web Proxy Server or any application where disk space changes frequently, the LVM partition is mandatory in this case. In my previous article, I discussed how to install CentOS 7.5 with LVM partitioning. If you are new here or CentOS 7 is not yet installed, I will suggest you to follow my previous article and install CentOS 7 with LVM partitioning and then continue this article. In this article, I will discuss how to manage LVM partitioning in CentOS/ Red Hat 7 Linux with the command line utility. Basic Components and Architecture of LVM Before going to start LVM management with command line tool, we should have basic knowledge on the basic LVM terms and architecture. The following three terms are the basic components of the LVM partitioning. Physical Volume: The underlying physical storage unit of an LVM is a block device such as a partition of a disk or the whole disk. To use the block device for an LVM logical volume, the device must be initialized as a physical volume (PV). Volume Groups: [...]

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    MikroTik Radius Configuration with FreeRADIUS and MySQL |   December 18, 2018

    FreeRADIUS is a modular RADIUS suite. A lot of modules such as Perl, python, MySQL etc. can be integrated with freeRADIUS to enrich freeRADIUS features. MySQL is one of the best user and client sources in freeRADIUS server. One of the important advantages of MySQL with freeRADIUS server is that MySQL can easily be controlled with a lot of programming languages including PHP. So, freeRADIUS users and their authentication, authorization and accounting can easily be controlled graphically using MySQL database [...]

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    CentOS 8 Networking Configuration Using nmtui Tool |   December 14, 2020

    The first task after completing CentOS 8 fresh installation is to configure its networking so that it can be accessed from other network devices. In my previous article, I discussed how to install CentOS 8 Graphical User Interface (GNOME Desktop) with step by step screenshots. If you are a new CentOS 8 user and have not yet installed CentOS 8 on your server machine, feel free to follow that article and install CentOS 8 GNOME Desktop according to the article. [...]

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    MikroTik IPIP Tunnel with IPsec (Site to Site VPN) |   March 18, 2018

    VPN (Virtual Private Network) is a technology that provides a secure tunnel across a public network. A private network user can send and receive data to any remote private network using VPN Tunnel as if his/her network device was directly connected to that private network. MikroTik provides IPIP tunnel that is used to create a site to site VPN. IPIP tunnel is a simple protocol that encapsulates IP packets in IP to make a tunnel between two routers. To encapsulate [...]

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    DHCP Server Configuration in MikroTik RouterOS 7 |   October 14, 2015

    Dynamic Host Configuration Protocol (DHCP) is a client/server protocol. DHCP server automatically provides an Internet Protocol (IP) address and other related information such as subnet mask, default gateway and DNS to DHCP clients. DHCP server and client use UDP port 67 and 68 for communication. In a network, a DHCP client (IP devices such as Desktop, Laptop, Smartphone etc.) requests for an IP lease to DHCP servers and a DHCP server responses allocating IP address and other related IP information [...]

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    MikroTik Site to Site SSTP VPN Setup with RouterOS Client |   May 14, 2020

    VPN (Virtual Private Network) technology provides a secure and encrypted tunnel across a public network. So, a private network user can send and receive data to any remote private network through VPN tunnel as if his/her network device was directly connected to that private network. Secure Socket Tunneling Protocol (SSTP) transports PPP tunnel over TLS channel. SSTP uses TLS channel over TCP port 443. So, SSTP VPN can virtually pass through all firewalls and proxy servers. Because of using TLS [...]

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    System Restore in Windows 10 |   August 30, 2015

    Windows is the most popular operating system in the world. No computer user can go a single day without windows operating system. As windows is a popular and mostly used operating system, a lot of viruses or unwanted programs are creating everyday. So, you may face various unusual behavior in your windows operating system due to various virus attack or unwanted programs installation. But windows has integrated a lot features which help to prevent these unwanted programs and keep your [...]

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    Ubuntu RADIUS Server Configuration with freeRADIUS |   September 3, 2022

    Ubuntu Server is one of most popular open-source Linux Server distribution. It is stable and reliable than other Linux distributions. So, enterprise level application can be hosted on Ubuntu Server. Ubuntu RADIUS Server is popularly used for remote authentication and mostly used with the freeRADIUS open source RAIDUS application. freeRADIUS is one of the most popular and powerful AAA (Authorization, Authentication and Accounting) application. Any enterprise (specially ISP company) can use freeRADIUS for AAA solution and can develop billing system. [...]

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    Why ISPs Should Embrace TR-069 ACS to Stay Ahead of Competitors |   May 22, 2023

    As the telecommunications industry becomes more competitive, local ISPs need to find ways to stay ahead of larger telcos and offer services that meet the changing demands of their customers. One of the solutions to this challenge is to implement TR-069 ACS server to help streamline network management, reduce costs, and increase efficiency. In this article, we’ll explore why the TR-069 ACS server is essential for medium-sized ISPs to stay competitive in today’s market. We’ll examine the challenges these ISPs [...]

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    MikroTik DHCP Server Configuration with Radius Server |   January 24, 2018

    The Dynamic Host Configuration Protocol (DHCP) is a client-server protocol that is used to assign an IP address and other network configuration parameters dynamically to each device on a network so that they can communicate with other IP networks. DHCP Server is popularly used in an Enterprise Office Network because in an office network various types of IP devices such as Laptop, Desktop, Tablet, Smartphone, IP Phone and so on are maintained and almost all IP devices support DHCP. An ISP Network can also be [...]

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