I have been doing a bit of cleanup around my home file server, and have noticed that while I have a really beautiful collections of family photographs there is no logical organization around these photos. I have many duplicates names, which would collide in the event of trying to merge…
Oracle Linux 6: Create an OCFS2 Cluster and Filesystem
Today we are going to go through the process of creating a clustered file system on a pair of Oracle Linux 6.3 nodes. This exercise is not very resource intensive. I am using two VMs each with 1GB of RAM a single CPU and a shared virtual disk file in…
Sudo: Setting Up Intelligent Security Policies Part Two
In Part One we went over the basics of sudo, what it is, why we use it, and how it is used properly. In this article we are going to take it a step further and look at specific use cases for sudo. The key thing to remember though, is…
Sudo: Setting Up Intelligent Security Policies Part One
What is Sudo? Prior to sudo whenever you wanted to run a command as a specific user then you would su (switch user) to gain access to a shell for that user. This of course required that you knew the password for that user, and it would spawn a new…
Linux KVM: Ubuntu 12.10 with Openvswitch
Today I am revisiting my previous post on Openvswitch on Ubuntu 12.04. Things have changed since then. Previously Openvswitch was relatively new and as such the userland tools (with libvirt being the one I use) didn’t support it yet, so while you could have used Openvswitch by executing the kvm…