UbuntuHow to Install and Configure the Memcached Object Caching System on Ubuntu
What is Memcached? When a user visits a dynamic website (like WordPress or an e-commerce...
LinuxHow to Synchronize Files Between Linux Servers Using the Unison Utility
Why Unison Instead of Rsync? The rsync utility is the undisputed king of pushing data...
LinuxHow to Mount an SMB File Share on Linux Using the cifs-utils Package
Bridging the Windows and Linux Gap While Linux servers natively use NFS to share files...
LinuxHow to Convert PEM Certificates to PFX Format Using OpenSSL in Linux
Why Convert PEM to PFX? When you purchase an SSL/TLS certificate from a public Certificate...
UbuntuHow to Install and Configure the Keepalived Daemon for High Availability on Ubuntu
What is Keepalived? In a high-availability (HA) cluster, if your primary load balancer or web...
LinuxHow to Change the Default Gateway in Linux Using the ip route Command
Why Change the Default Gateway? The default gateway is the IP address of the router...
UbuntuHow to Install and Configure the Cockpit Web Console on Ubuntu
What is Cockpit? Managing Linux servers exclusively through the command-line interface (CLI) can be intimidating...
UbuntuHow to Install and Configure the Postfix Mail Server on Ubuntu
What is Postfix? Postfix is a free, open-source Mail Transfer Agent (MTA) that routes and...
LinuxHow to Setup a PXE (Preboot Execution Environment) Server in Linux Using Dnsmasq
Why Use a PXE Server? Installing an operating system via USB drives is fine for...
TerminalHow to Generate SSH Keys Using the Ed25519 Algorithm in Linux
Why Move Away from RSA? For over a decade, the 2048-bit RSA algorithm was the...
UbuntuHow to Setup an NFS (Network File System) Server on Ubuntu
What is NFS? The Network File System (NFS) is a distributed file system protocol that...
UbuntuHow to Install and Configure the BIND DNS Server on Ubuntu
What is BIND? The Berkeley Internet Name Domain (BIND) is the most widely used Domain...
LinuxHow to Create and Manage LVM Snapshots in Linux
The Power of LVM Snapshots When performing risky system upgrades or database migrations on a...
LinuxHow to Block IP Addresses Using the iptables Command in Linux
What is iptables? The iptables utility is the traditional, immensely powerful command-line firewall interface for...
UbuntuHow to Install and Configure the vsftpd FTP Server on Ubuntu
Why Choose vsftpd? When you need to allow users to upload and download files from...
TerminalHow to Synchronize Time on Linux Using Chrony
Why Replace NTPD with Chrony? Accurate timekeeping is critical for Linux servers, as mismatched clocks...
LinuxHow to Benchmark Linux Disk Performance Using fio (Flexible I/O Tester)
Why Not Just Use dd? Many system administrators attempt to test disk speed by running...