How to see what’s running on a port in Linux
user@hostname ~ $ sudo lsof -i -P -n | grep LISTEN | grep 1025 mailcatch 1104 root 9u IPv4 27240 0t0
Operating Systems
How to set up a fault tolerant / failover system on Linux
Problem: You need to make sure that your disks are 100% redundant. Solution: A popular way on Linux to do this is DRBD. Here are
Two good configuration files for DRBD and OCFS2
Problem: You need to know if your DRBD and OCFS2 disk fault tolerance has been setup correctly but the configuration options are overwhelming. Solution: See
How to avoid having to retype a password repeatedly using ssh-keygen and ssh-copy-id
You are tired of using SSH and having to repeatedly type passwords. This slowing down your workflow, especially as you are working on multiple servers.
How to maintain SSH terminal sessions using screen on an unreliable link
Background Broken SSH sessions can be a pain in the butt because it disrupts your workflow. Broken SSH sessions may be a result of: An
What is Virtualization?
KVM stands for Kernel-based Virtual Machine. It’s a type of virtualization technology that allows you to run multiple guests on a single hardware host. KVM
What kind of virtualization technologies exist?
The virtualization space is a massive industry. In the article we list some of the better know virtual systems available: Technology / Firm Comments KVM
Errors: You don’t have enough Bandwidth to create this VPS
Whilst creating a server using the Virtualizor_cloud module, you get the following error: Errors: You don’t have enough Bandwidth to create this VPS Workaround: Enter
Cannot login using RDP to server
On a freshly installed Windows 2012 R2 server you cannot RDP. Check all of the following: If the server was commissioned using the WHMCS Virtualizor_cloud
Cannot ping freshly installed Windows 2012 Server
On a freshly deployed Windows 2012 R2 VPS server, possibly deployed by the WHMCS module Virtualizor_cloud, you cannot ping the server. When you VNC to