Linux

In this article we’ll show how to configure a tagged VLAN interface using native Linux tools on CentOS/Fedora/RedHat. We’ll study the configuration using subinterface, a separate vlanX file and tools…

In this article we’ll show how to configure the HAProxy as a load balancer for two Nginx web servers (you can replace it with Apache). CentOS is used as a…

In CentOS 7 the FirewallD has appeared to configure traffic filtering rules. It is the tool recommended to be used to manage iptables rules. CentOS 8 is using nftables framework…

In this article, we’ll consider a high-available failover configuration of two squid (Linux) proxy servers to access the Internet from a corporate LAN. To build a failover configuration we are…

In this article we’ll cover the basic steps required to install a clean Linux CentOS 8 from scratch and initial server setup.

In this article we’ll learn the basics of how to configure services and scripts to start automatically in Linux CentOS/RHEL 7/8. In particular, we’ll get acquainted with systemd daemon, learn how to…

In this article we’ll talk about how to resize KVM virtual machine disks for popular disk types. We’ll show how to correctly increase a virtual machine disk size in the…

The standard (official) RHEL/CentOS repositories offer a small number of basic packages that do not always contain the latest versions of programs. However, you can use third-party public or private…

In this article, we’ll consider the YUM package manager that allows to manage program (RPM packages) installation, removal and updating, automatically resolve dependencies and manage additional repositories. This article will…