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VirtualBox is an open-source hypervisor software that helps us to create and run virtual machines of Linux, Windows, OS/2, Solaris, and other supported operating systems on top of the host operating system. VirtualBox can run on Linux, Windows, macOS, and Solaris. It is an alternative to proprietary hypervisor VMware workstation and Kernel Virtual Machine. VirtualBox […]
CentOS 8 / RHEL 8 uses a consistent and predictable device name for network interfaces. This feature helps us in locating and differentiating network interfaces. Due to this predictable naming, your machine’s network interface name might have got changed to ensXX or enpXsX from eth0. Here, we will see how to change network interface name […]
Since CentOS 7 / RHEL 7, system run levels are replaced with targets and are managed by systemd. Systemd targets are represented by target units and their configuration files end with .target extension. This systemd target unit file contains other systemd units through a chain of dependencies. For example, the graphical.target which provides graphical console […]
SSH is a client and server protocol, and it helps us to securely access the remote system over the network through the encrypted tunnel. SSH has a built-in file transfer mechanism (SCP) to transfer files and directories over the network, and it is way more secure than FTP (File Transfer Protocol). In larger environments, it […]
Zabbix is an open-source enterprise-ready monitoring tool for servers, network devices, and other IT components. Since the Zabbix is enterprise-ready, you can use it for monitoring the environments ranging from small to larger. Zabbix uses Zabbix Agent (client software) installed on the client-server to collect the data. It can also monitor standard services such as […]