Nagios Update

Oh how the time gets away from you…I have Nagios (Refer to the April 15th post) installed and in production. I am still tweaking the configuration and rolling out device monitoring.Adding anything to be monitored is time consuming. Some might even think it is very time consuming. The three main files are switch.cfg, windows.cfg and … Read more

Device or resource busy when using mdadm

After my Buffalo NAS physically failed, I decided to go back to the good ole’ home brew files server / NAS. So I stripped out the 250GB drives from the NAS and set out to setup Linux software RAID which is also known as md RAID. I went this route because my hardware RAID controller … Read more

VirtualBox and cloning virtual hard disk drives

After breaking my VMWare Workstation install by upgrading to the latest kernel, I decided to give VirtualBox a try. VirtualBox comes in two flavors, the full version and the open source edition (OSE). I have had a great time creating virtual machines in VirtualBox, the application really is quite solid. I am seeing performance similar … Read more

Resolv.conf getting reset on reboot

If you have been around Linux for any length of time, you know that you can statically define which DNS servers your computer uses for name resolution. This is not always the case in Ubuntu / Debian systems because of a package called dhcp3-client. If this package is in use on your system, you will … Read more

Identifying kernel and Ubuntu versions

These are pretty basic tasks but they are important things to know if you are new to Linux. These are particularly useful if you are running a Linux system without an X server. To find the Linux kernel version that you are running, open your favorite terminal or CLI and type in: uname -a. Using … Read more