Category Archives: Servers

Linux : ownCloud 10.8.0 Debian 10 repository is not signed

If you attempted to upgrade from ownCloud 10.7.0 to 10.8.0 using the APT repository, you most likely encountered a signature error as followed : Get:11 https://download.owncloud.org/download/repositories/10.8.0/Debian_10 Release [964 B] Get:12 https://download.owncloud.org/download/repositories/10.8.0/Debian_10 Release.gpg [481 B] Ign:12 https://download.owncloud.org/download/repositories/10.8.0/Debian_10 Release.gpg Reading package lists… Done W: GPG error: https://download.owncloud.org/download/repositories/10.8.0/Debian_10 Release: The following signatures were invalid: DDA2C105C4B73A6649AD2BBD47AE7F72479BC94B E: The repository… Read More »

Linux : cPanel Exim service keep bouncing up/down

If you are receiving a lot of cPanel notification message stating that the Exim mail server service is flapping (going down and up repeatedly) as followed : The service “exim-26,465,587” appears to be down. The service “exim-26,465,587” is now operational. You are most likely victim of some sort of denial of service attack against your… Read More »

Windows : SQL Server installation wizard stuck at Service Account step

You probably installed SQL Server a few times and it went smoothly. However this time, you ended up with the following issue/symptoms at the installation: the server configuration wizard is stuck with the “Please Wait” and/or (not responding) message. This is often happening when custom domain users (for Service Accounts) are defined instead of local… Read More »

Linux : InRelease’ changed its ‘Version’ value from ‘10.1’ to ‘10.2’

You probably noticed a similar output after running “apt-get update” on your Debian Linux based system: N: Repository ‘http://deb.debian.org/debian buster InRelease ‘ changed its ‘Version’ value from ‘10.9’ to ‘10.11’ E: Repository ‘http://deb.debian.org/debian buster InRelease ‘ changed its ‘Suite’ value from ‘stable’ to ‘oldstable’ […] This means that the major and minor version you are… Read More »

Windows : How to open a port on firewall from command line (CLI)

Windows Firewall can be configured from the GUI (by using firewall.cpl UI console) and also using the command line. This quick tutorial will cover how to manipulate the rules from CLI to open, block a port and delete a rule. In a nutshell, here is the command sample:

netsh advfirewall firewall add rule name="<DESCRIPTION>" dir=in action=<ACTION> protocol=<PROTOCOL> localport=<PORT>

1	netsh advfirewall firewall add rule name="<DESCRIPTION>" dir=in action=<ACTION> protocol=<PROTOCOL> localport=<PORT>

The rest of this article will… Read More »

Linux : How to clear stuck AutoSSL queue in cPanel

cPanel AutoSSL feature is great, but sometime can run into issues. Once in a while, you may have some certificate requests pending forever without any particular reason. This usually can be fixed by clearing the queue and force AutoSSL to run for the stuck domain again. 1. Move the AutoSSL database file under a different… Read More »

VMware : VCSA upgrade vix error codes = (1, 4294967286)

You may have experienced the following behavior while trying to upgrade your vCenter Server Appliance (VCSA) to 6.7.x – after submitting the IP and credentials information of the current vCenter and host, the wizard end up with error without any details. However, after downloading the log (there is a link within the red error bubble… Read More »

Linux : OSSEC WebUI not showing information after PHP upgrade

You may have noticed that the OSSEC Web Interface stopped working (as of today on a new installation) or after updating PHP on your server. Looking at the logs, you most likely found a similar entry: PHP Fatal error: Uncaught Error: Call to undefined function split() in /var/www/html/ossec/lib/os_lib_agent.php:111\nStack trace:\n#0 /var/www/html/ossec/site/main.php(33): os_getagents(Array)\n#1 /var/www/html/ossec/index.php(126): include(‘/var/www/html/o…’)\n#2 {main}\n thrown… Read More »

Linux : cPanel outgoing email return “this server is not permitted to relay through this server without authentication”

Recently, without any change, I noticed that some cPanel servers stop sending email and return the following error: 550-Please turn on SMTP Authentication in your mail client. 550-hostname.domain.tld [0.0.0.0]:00000 is not permitted to relay 550 through this server without authentication. What is really puzzling in that case is that this message showed up even though… Read More »

Linux : R1Soft Backup Server manager stuck on “This may take several minutes” forever

I came across the following issue recently, where R1Soft backup server service was just restarted and showing the page that indicate that the service is currently in the starting process ; Idera Server Backup Manager This may take several minutes If you are the administrator, check the log files for details. Otherwise, please check back… Read More »