Traffic policing in Running VMs – Openstack

One of the major issued facing by a cloud administrator is to control the traffic in/out in a virtual machine. There is two methods you can control this, first one is to inject a special meta-data into the flavor. Second method is to apply special controls on the virtual interface of a running virtual machine.…

Creating a Kali Linux Image for Openstack

Kali Linux is a Debian-derived Linux distribution designed for digital forensics and penetration testing. It is maintained and funded by Offensive Security Ltd. Mati Aharoni, Devon Kearns and RaphaĆ«l Hertzog are the core developers. Now a days lots of people using it for Security assessment. Here we will see how to create a QCOW2 image…

Over-Commit values for the Host Aggregates

Overcommitting is the process of allocating more virtualized CPUs or memory than there are physical resources on the system. CPU overcommit allows under-utilized virtualized servers or desktops to run on fewer servers which saves power and money. Most operating systems and applications do not use 100% of the available RAM all the time. This behavior…