JunOS : Autorecovery information needs to be saved

If your Juniper device indicate an alarm status (red light shown on the unit), you can run the following command to find out the details :

And the following output is shown: 1 alarms currently active Alarm time Class Description 2021-10-19 03:06:00 UTC Minor Autorecovery information needs to be saved This mean that your… 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 »

VMware : How to remove invalid virtual machine from inventory

You may at some point end up with virtual machines marked with “Invalid” status in the vSphere Web client or vCenter. You will also notice that the contextual menu does not show up the usual options (mostly everything is greyed out) and more importantly, the “Unregister” or “Delete” options are unfortunately unavailable. Chill out, there… 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:

The rest of this article will… Read More »

JunOS : Interface irb.1 must be configured under interfaces

While adding a new security zone on your SRX firewall, you may encountered the following error while committing your changes: [edit security zones security-zone VLAN1] ‘interfaces irb.1’ Interface irb.1 must be configured under interfaces error: configuration check-out failed This is a common mistake where the irb interface configuration was forgotten. For those unfamiliar with the… 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 »

PC : Secure Boot missing from BIOS option on Gigabyte Z390 Designare

If you have a Gigabyte Z390 Designare motherboard, you might be wondering how to enable Secure Boot in order to meet the TPM2 Windows 11 requirement. Browsed every section of the BIOS and didn’t found it? Most likely you have “CSM Support” option enabled. (Compatibility Support Module (CSM) is a feature of the UEFI firmware… Read More »

Category: PC

IOS : Factory reset a Cisco Catalyst switch

In this article we will cover the procedure to reset a Cisco Catalyst to factory default settings. This will wipe out the current configuration written in flash and also the VLan database file as well. 1. Connect the switch serial console port to a computer and open up a terminal so you can see the… Read More »