Having the red alarm led on but nothing is wrong with your JunOS powered Juniper device? First, look out what alarm is triggered by issuing the following command : show chassis alarm If absolutely nothing is really wrong, you will see the following alarm : Alarm time Class Description 2016-01-20 07:11:59 UTC Major Management Ethernet… Read More »
Among all the new bells and whistles coming with the latest major release of RedHat Enterprise Linux platform, resolution bot both the installation process and system console have changed (higher resolution than before is default). Unfortunately, server system does not necessarily have the newest display device or iLO, iDRAC and virtual machine consoles are out… Read More »
Having the following output message while trying to create a VLan outside higher than 1000 on your Cisco device? SWITCH-601(config)#vlan 2991 SWITCH-601(config-vlan)#end % Failed to create VLANs 2991 Extended VLAN(s) not allowed in current VTP mode. %Failed to commit extended VLAN(s) changes. This mean that you are running VTP mode 1 or 2, which only support… Read More »
Need to forward a custom port to an existing port on your Linux box? Simply use the following command as root : iptables -t nat -I PREROUTING –src 0/0 –dst 0.0.0.0/0 -p tcp –dport <port-to-forward> -j REDIRECT –to-ports <destination-port> Example : Assuming you want to forward port 1025 to port 587 : iptables -t nat -I PREROUTING… Read More »
With the latest macOS Sierra 10.12 release, you might have observed issue connecting to servers or network devices running SSH. Please note that this article does not necessary apply or macOS, but any running OS with the latest OpenSSH v7. Because of the latest OpenSSH version, some older (legacy) encryption algorithm have been removed from… Read More »
By default, as you may already know, Microsoft had disabled by default the “Administrator” for our own good. There might be some cases where you need it enabled. Since it is hidden from the user friendly accounts manager in control panel and the “advanced” MMC under Administrative Tools / Computer Management isn’t available in Home… Read More »
This post will cover the complete installation and setup of a NFS client and server on SuSE Linux. By default, the system include the NFS client but not the server. First of all, make sure that NFS traffic is allowed if you are running any firewall on the client/server machine. You can achieve this through… Read More »
This might sounds a bit unusual, but there might be a good reason why you would remove the first three characters of each line of an extensive Word document, such as numbering. To achieve this, simply use the “search & replace” function : Edit > Search > Search and replace Then in the search field,… Read More »
You will find below some basic and useful commands to operate a ESXi hypervisor from the command line. Put the host in maintenance mode (or leave maintenance mode) : esxcli –server localhost system maintenancemode set –enable <true | false> List all VMs registered on the host : vim-cmd vmsvc/getallvms Verify the power state of a… Read More »
Using ownCloud repo and encountered the following error while upgrading to version 8.1.9? Updating ownCloud to version 8.1.9, this may take a while. Set log level to debug – current level: “Warning” Turned on maintenance mode Checked database schema update Checked database schema update for apps Updated database Exception: App can’t be installed because it… Read More »