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7 Services Virtualization Lacks

Well written piece by Nickolov:

Virtualization by itself, however, is not a complete utility computing solution. While virtualization systems deal exceptionally well with partitioning CPU and memory within a server, they lack abstractions for network and storage interactions, image management, life-cycle control and other services critical to utility computing. However, there are two commercial utility computing solutions based on virtualization that are more than a year old now, Amazon’s EC2 and 3tera’s AppLogic.
and here on Network dilemma :

When installing software on a physical server or virtual machine it’s normal practice for each system to be configured with the name or IP addresses of numerous other resources within the data center. For instance, a web server may have the name of a database or NAS. In a utility system, however, configuration isn’t quite so simple.

Xen’s network configuration provides two mechanisms: (1) flat L2 network, in which domain 0 acts also as a network switch, forwarding packets between the physical network and the VMs; and (2) routed solution, in which domain 0 acts as an IP router, creating a subnet for all VMs on the same server. Both approaches create their own set of problems when used in utility computing systems — from exceeding the MAC address limits on L2 switches to complicating the IP address space and preventing live migration of VMs.

Most existing utility systems implement either point-to-point connection virtualization or security groups similar to VLANs. As with storage, some form of quota or throttling of network I/O is needed so that one VM cannot monopolize the network interface and starve other VMs. In addition, network virtualization services like better VLAN systems, DHCP and DNS variants that take VM and utility needs into account are needed.

Check it out.

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A Collection of Threnodies : Part 1

Whale Fall
-----------------

Dress me up in my new threads
clasp my greasy palms
grease my hair
I'm ready for the fall


Watch at all the decadence
watching the avalanche
I'm slipping down
losing my buoyancy


What's become of us
where have we come
this far, this close
close to the doors


I hear them, sublimal chants
I'm on the run
I race through the human sea
I am the king!


I'm the slave
to my own undoings
I'm the jester in my courtyard
We jest as we run


We're strolling on that thin rope
we grope as we rope
we're true heros
we're the survivors


we're the scavengers
we're the friends
we're the lovers
we're the unbred


Soon awaiting the fall
we're lurking on us
we're osedaxing us
we're soon going to be done
we'll soon be arrested




*osedax(bone devourer, newly discovered marine genus) feeds on a fallen(sunken) whale carcass(which is also called a whale fall). Read more here