Author Archives: Kaven Gagnon


About Kaven Gagnon

System & Network Architect

Windows : How to list and export installed software with PowerShell CLI

Use the following PowerShell command (run as admin) to list and export all installed software on Windows and export to a text file :

This will save the output to C:\InstalledSoftware.txt

Linux : Kernel scheduler “noop” missing on RHEL/AlmaLinux/Debian

If you are used to “noop” kernel scheduler, you might have been stunned to see that it is nowhere to be found on Red Hat Enterprise Linux (RHEL), AlmaLinux, CentOS v8, Debian v10 and above :

Well, since then, it has been renamed from “noop” to “none”. So by using the same method as… Read More »

Linux : Move from FleetSSL to AutoSSL on cPanel

In the early ages of free automated SSL certificates, FleetSSL cPanel Plugin (earlier known as Let’s Encrypt for cPanel) was the standard. cPanel then announced in 2016 that the official plugin was now AutoSSL, which is provided by cPanel. The move from FleetSSL to AutoSSL is quite simple : 1. Uninstall FleetSSL Let’s Encrypt :… Read More »

Linux : How to reset the LiteSpeed WebUI Admin interface password

LiteSpeed Web Administration interface password can be reset easily with this single command as root :

You will be asked for the user to reset the password (by default “admin”) and then to supply the new password of your choosing twice.

Linux : How to restrict access to LiteSpeed Web Server WebUI

LiteSpeed Web server come with a WebUI admin interface that is by default, accessible from port 7080 from any addresses (IP). For security reasons, it should be restricted to the IP address(es) or subnet(s) you usually manage your servers from and also to prevent the now very popular brute-force login attempts, which will flood you… Read More »

Linux : SSH X11 forwarding xauth .Xauthority does not exist

The following message may show up the first time you SSH login to a X11 forwarding enabled machine : /usr/bin/xauth: file /home/%user/.Xauthority does not exist In order to workaround this issue, just do the following : 1. Create an empty file for the concerned user :

2. Change the user/group permission to match the… Read More »

VMware : How to increase disk space on VCSA appliance

The VMware vCenter Server Appliance (VCSA) propose several disk sizing at the time of deployment. Eventually, disk shortage may occur, especially for the /var/log disk. This example assume you want to increase the default 10 Gb /var/log volume located on the virtual Hard Disk 5. 1. From the vCenter oe ESXi WebUI, edit the VCSA… Read More »

Linux : Morpheus Error executing action `create` on resource

Morpheus Cloud Management Platform 5.1.1 error out as followed when installing the Debian package :

As obviously stated in the message, the folder “/etc/sudoers.d” does not exist, so the installer error out and exit. The fix is as easy as creating the folder :

You may now install the package again and the… Read More »

Web : ownCloud 10.8.0 to 10.9.0 upgrade Repair warning: No marketplace connection: Forbidden

Upgrade from ownCloud 10.8.0 to 10.9.0 return the following error : Repair warning: No marketplace connection: Client error response [url] [status code] 403 [reason phrase] Forbidden This is a known behavior caused by missing ownCloud Marketplace API key. If no other error has been displayed following your upgrade process, simply do the following steps… Read More »