May 21, 2021


On centos 7, there are instances where you get the error Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subjectError registering authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot […]
November 21, 2020

Load Testing Web Servers with apache benchmark tool

Command to run the Apache benchmark tool (ab) with 200 simultaneous requests until 2000 requests are completed: # ab -k -c 100 -n 2000 localhost/checkiffileexists.php Let’s run the test and compare the […]
May 16, 2020

How to create/remove the disk from the array

Mdadm is the modern tool most Linux distributions use these days to manage software RAID arrays; in the past raidtools was the tool we have used […]
May 9, 2020

Updating Intel NIC drivers on Linux centos

First Check the NIC driver version installed on the server. [[email protected]]# /sbin/lspci | grep Ethernet 0b:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection 15:00.0 Ethernet […]
May 7, 2020

How to Configure Rsyslog in CentOS/RHEL 7 Server

By default, Rsyslog service is automatically installed and should be running in CentOS/RHEL 7. In order to check if the daemon is started in the system, […]
April 28, 2020

How to fix Encryption error on login to CWP

If you get Encryption error on login using root then try following. Login as root in shell/ssh1. try setting new password for root user. passwd if […]
April 12, 2020

How To Install Centova Cast on CentOS?

Centova Cast is the leading management platform for Internet radio streams, providing extensive insight and control to stream hosting providers.Centova Cast offers powerful features for both […]
April 4, 2020

Login issues: Rejected session for user admin because IP ( doesn’t match session file (

If you’re logged in, or having issues logging in, where you get booted back to the main login page, and your: shows this error but both […]
March 31, 2020

Unable to connect to a server via FTP with ProFTPd installed from Atomicorp repository: Fatal: ScoreboardFile: : unable to use ‘/var/run/proftpd/scoreboard’: No such file or directory

ProFTPD package is installed from the Atomicorp repository: Connection to a server via FTP fails with on of the following error messages: The following error appears […]