Linux administration

LVM (logical volume manager) is a special Linux OS subsystem that provides additional options for managing partitions on hard disks. Unlike the classical scheme, when partitions that are used for file systems are created on every disk, LVM allows for combining the space on different disks into a common logical space, which can then be used to create or expand partitions. Thus, with help of LVM, one can place one partition on multiple disks or place multiple partitions on one disk.

This tutorial will guide you through the process of setting up vsftpd to allow a user to upload files to his or her home directory using FTP.

If you have lost the root password of your server, and you cannot access the server as root, then this article will help you resolve this issue.

LAMP is an acronym for Linux, Apache, MySQL, and PHP. All of these components together allow obtaining a full web-server. Each of them is responsible for a certain component of web-hosting.

RAID "Redundant Array of Independent Disks" is a method of using multiple disks for different combinations to increase the reliability of data storage and/or improve performance of read/write operations, depending on the RAID level.

If you need to upload files on a server or give access to your employee/colleague so they would set up your website, an FTP-server will be the best solution.

If you have lost the root password of your server, this article will help.

Monit is an open source monitoring tool for Linux operating systems. This utility allows to:

To use а SSH key pair to connect to a server, the "public" part of the pair has to be placed on the server. Please refer to the first section of the "How to create and access a Linux-based cloud server via an SSH key" article for instruction on how to generate key pairs under Windows, Mac, and Linux.

If you are facing a network connectivity issue with your server, our support team may ask you to run several network diagnostic tools and to provide their output.

Services that require high availability typically use floating IPs. Floating IP address can be transferred between multiple servers allowing for failover or upgrading of production software.

Whether you need to copy files locally or transfer them to a remote server, you can do that with rsync – a file synchronization utility.

ZABBIX is a free system for monitoring the status of various services of a computer network, servers and network equipment.

Munin is a free monitoring system. It allows you to collect data from multiple servers simultaneously and display everything in clear and intuitive graphs. It has modular architecture, and works based on the “Master-Node” principle. It uses RRDtool to create graphs that are accessible via the web interface.

SSH protocol provides opportunities for remote device management, but as any publicly accessible service, an SSH server is exposed to various attacks. One of such attacks is password-cracking.

If you have lost the root password of your server, you can restart the server in single-user mode and set a new password. To do this, you must access the server console via the customer portal.servers.com.

SSH protocol provides opportunities for remote device management, but as any publicly accessible service, an SSH server is exposed to various attacks. One of such attacks is password-cracking.

GNU nano is a text editor for Unix-like computing systems or operating environments using a command line interface.

Use the "ssh" utility on your local machine to connect to a remote server via SSH. This applies to Linux, macOS and Windows 10.  Use Terminal under macOS and Linux to call the ssh utility. On Microsoft Windows 10, use PowerShell.

To create a new SSH key pair, run the "ssh-keygen" utility on your local machine. The "ssh-keygen" utility is available on all major operating systems. In macOS or Linux, run "ssh-keygen" in the Terminal app. On Windows, run "ssh-keygen" in the Command Prompt app.

To replace password-based SSH authentication with key-based, you need to set up key-based authentication first and disable password-based authentication afterward. Disabling password-based authentication before setting up key-based authentication may result in locking yourself out of SSH access.

You may want to make SSH on your server or a set of servers to be accessible only from certain IP networks. To do that, you can set up host-based firewall rules using iptables, nftables, ufw, and firewalld. You can also use the network-based firewall service provided by Servers.com.

This instruction guides you through the steps of link disaggregation on a Proxmox server. The process consists of actions performed both on the Proxmox server end and on a switch.