linux lvm commands
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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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NGINX Web Server Installation and Configuration in Ubuntu | September 7, 2024
NGINX is a feature rich and high-performance software which is mainly used for Web Server. NGINX can also be used as a proxy server, load balancer, mail proxy and HTTP Cache Server. NGINX is a free and open-source software and can be run on Linux, Windows. macOS and other operating systems. NGINX is a single-thread based application. So, it can handle unlimited client requests using asynchronous technique. NGINX processes highly efficient run loops in a single-thread process called workers. Workers accept [...]
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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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How to Create Free SSL/TLS Certificate with OpenSSL | July 23, 2021
SSL/TLS certificate is required to encrypt data sent over internet communication. Without encryption, the sent data can be hacked by the middle man attack. SSL/TLS certificate is usually a pair key, public key and private key, solution where data is encrypted with public key and decrypted with private key. In public communication, public key is required to be signed by a CA (certificate authority) but in private communication, there is no need to be signed by any CA. If we [...]
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Ubuntu Web Server Configuration with phpMyAdmin (LAMP Stack) | July 12, 2021
Ubuntu Server is one of the most popular open source operating systems that can be used in production without any hassle. In my previous article, I discussed how to install Ubuntu Server with LVM partition. I also discussed how to assign static IP address on Ubuntu Server interface with Netplan network management tool. Ubuntu web server is a popular service because web developers usually use Ubuntu Server for their development project. Besides development project, Ubuntu web server can also be [...]
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CentOS 7 Partition Management with fdisk Utility | February 11, 2019
CentOS or Red Hat Linux is a popular server operating system to the system administrators. Almost all the system admins or IT guys who play with mail server, file server, proxy server and so on are so known with CentOS or Red Hat Linux and cannot go a single day without this operating system. The guys who are also wish to be a system admin should be familiar with CentOS or Red Hat operating system. In my previous article, I [...]
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How to Block Tor Browser with MikroTik Router | June 12, 2019
Tor Browser is an alternative to VPN and Web Proxy that breaks blocking firewall rule. If any user installs and uses Tor Browser, he/she can hide the public IP address of router and can unblock blocked websites applied on a network. So, administrators should block Tor Nodes along with other blocking firewall rule. In my previous article, I discussed how to block VPN and Proxy access with MikroTik Router and in this article I will discuss how to block Tor [...]
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How to Assign Static IP Address in Windows OS | September 16, 2015
Communication between one computer to another computer or server is established with IP addresses. Without IP address no communication is possible in computer network. An Internet Protocol (IP) Address is a numerical value or label assigned to each electronic device (e.g., computer, smartphone and printer) which uses Internet Protocol for communication. IP can be assigned both dynamically and statically on a IP devices. Dynamic IP is assigned by a DHCP server. If a DHCP server is present in a network, [...]
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MikroTik Load Balancing and Link Redundancy with PBR | March 31, 2019
In computer networking, the Load Balancing technique is used to send network traffic over multiple gateways. If you have multiple ISP connections available, you can use load balancing technique to establish a stable network. You may now ask, why will I use multiple ISP connections? What are the benefits to use multiple ISP connections in my network? For your satisfaction, the following points are some reasons to use load balancing technique in your network. No ISP can give you 100% [...]
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Guest WiFi – How to Setup on MikroTik AP | April 30, 2024
Guest WiFi helps to keep your network safe and secure. Any sensitive wireless network should have a guest network. So, Guest WiFi is so essential for an office network. In a corporate office, guests or visitors frequently come and get connected to get internet for a few times. It is so much security issue to keep guest or visitor in the core network because among them someone can damage important network resources. So, to keep them isolated from the core [...]
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