virtualize all the things!
TRANSCRIPT
VIRTUALIZE ALL THE THINGS!Yes….all the things!
Presented by: David Pechon, Jr.MCSA, VCP5-DCV
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WHO DOES THIS GUY THINK HE IS?Started IT career with an enlistment in the US Army in 1997 as an Information Systems Operator/Analyst. Stationed at Fort Polk, LA; Youngsan Army Garrison in Seoul, South Korea; and Fort Bragg, NC. (never airborne, instead a dirty nasty leg)
Worked for a loan servicing company and three different banks in SE Louisiana, as well as a consulting business from a small MSP in New Orleans to a large systems integrator based in Denver.
Started working at Sparkhound in February 2014, specializing in virtualization, storage, messaging and identity management
Held certifications from Microsoft, VMware, NetApp, CommVault and SyncSort (now Catalogic Software).
Married to my wife Clare of 8 years with two children and currently resides in Ponchatoula, LA
Avid Chicago Cubs fan; enjoys fish, fine beers and grilling outdoors.
Fun fact: My face was on the Today show in 1991 for a full five seconds when Joe Garagiola visited my school at Fort Stewart, GA.
@davidpechon
http://linkedin.com/in/davidpechonjr
…AND WHY DOES HE WANT TO VIRTUALIZE EVERYTHING?
Get more for less: We can utilize what would otherwise be wasted compute resources from less servers compared to a purely physical environment. This allows for smaller datacenter footprint, denser environments, and less cooling and electrical costs.
Decouple software from the hardware and in some cases, applications from the OS allowing for faster recovery time objectives, faster provisioning, and flexible disaster recovery.
Virtualization has been in datacenters for decades running mission critical workloads. Today’s x86 based hypervisors
WHAT VIRTUALIZATION IS AND IS NOTVirtualization is:
Running more than one operating system in a virtual machine on a host by use of a hypervisor Isolated user space containers of a single operating system that share an OS kernel (OS level virtualization)An encapsulation of applications from a server, allowing an application to run on another computer that it is not installed on (App virtualization)
Virtualization is NOT:The cloud. Virtualization is part of a cloud solution but virtualization alone is not “the cloud”.
Emulation. A hypervisor does not translate code from different processors ( e.g. a CISC based x86 processor to a RISC based Power processor).
BRIEF HISTORY VIRTUALIZAION1972: IBM System 370 with the VM OS is the first instance of the use of a hypervisor, a control program that managed resources for each user in a virtual machine
1998: VMware comes out of stealth mode, introduces VMware Workstation, a type 2 hypervisor. becoming the first instance of Intel x86 virtualization.
VMware would release ESX Server, a type 1 hypervisor that runs on bare metal in 2002
2008: Microsoft introduces Hyper-V, a Type 1 hypervisor based on the Windows kernel.
2003: Xen is introduced as an open source type 1 hypervisor. Xen introduced paravirtualization, where hardware is not simulated.
2005: Sun releases Solaris Containers, a virtualization method that allows for separate zones that have their own settings and applications but share common OS services and kernel1989: Citrix licenses OS/2 source code
from Microsoft and later Windows NT code to create WinFrame, a multiuser Windows environment that allowed multiple desktop sessions on a single Windows server.
2007: Kernel Virtual Manager or KVM is a Linux based hypervisor was merged into the mainline Linux Kernel.
VIRTUALIZATION MYTHSLies, damned lies, and FUD
VIRTUALIZATION IS EXPENSIVE
FACT: Virtualization allows you to drive down capital costs by reducing the amount of hardware and licensing costs.
Operational costs are driven down in the form of less energy and cooling consumption, less datacenter space needed, reduced maintenance contracts, and reduced administrative overhead.
VIRTUALIZATION IS NOT SECURE
FACT: Modern hypervisors are extremely secure in terms of role based administration, encryption, multi-tenancy support, and regulatory compliance.
VIRTUALIZATION IS DIFFICULT TO MANAGEFACT: VMware and Microsoft have added many ways to manage virtualization environments through orchestration and automation.
VMware vSphere has vCenter Server, vCenter Orchestrator, and vRealize. Hyper-V uses System Center Virtual Machine Manager and System Center Operations Manager. Both vSphere and Hyper-V support PowerShell.
Virtualization has allowed IT shops to bring services and applications to the business much faster than compared to physical environments.
FACT: Both vSphere and Hyper-V are certified to run some of the most demanding applications such as SAP HANA. Virtual machine limits for resources for both hosts and VMs for either hypervisor far exceed the recommended system requirements for nearly any application off the shelf.
VIRTUALIZATION WILL BOTTLENECK SYSTEM PERFORMANCE
VIRTUALIZATION IS ONLY FOR SERVERSFACT: Servers, desktops, storage, and networking are some of the many things that can be virtualized.
Virtualization is allowing people to run software defined infrastructure on commodity x86 hardware.
YES, YOUR APPLICATION WILL RUNStop running your datacenter like its still 1998.
1998 WAS A GREAT YEAR…
I had more hair and was in great shape
Movies were actually good
Cell phones were indestructible
Google wasn’t evil.
Britney Spears was America’s sweetheart.
…BUT NOT FOR MANAGING DATACENTERS
So why are you still running on bare metal servers?
HYPERVISOR LIMITS
480 Logical Processors per host 320 Logical Processors per host
6 TB (12TB supported by some server OEMs) 4 TB RAM
64 nodes per vSphere cluster 64 nodes per Hyper-V cluster
Tightly controlled hardware compatibility list that supports a wide array of manufactures and supports nearly all commercially available
operating systems
Runs on any hardware with Windows drivers. Supports all versions of Windows and most popular
Linux distributions.
VIRTUAL MACHINE LIMITS
128 Virtual CPUs per VM 64 Virtual CPUs per VM
4 TB per VM 1 TB per VM
62 TB virtual disk size limit64 TB virtual disk size (VHDX), 2 TB
(VHD)
Up to 10 network adaptors 12 network adaptors
WHY VIRTUALIZATION IS AWESOMEBet’cha didn’t know anything about this, huh?
VSPHERE FAULT TOLERANCEvSphere HA supports the ability to restart a virtual machine if a host fails. The problem is that this will cause a service disruption as the VM restarts on another host.
Introduced in vSphere 5.0, Fault Tolerance runs a copy of a VM on another host, while sending CPU and other IO to the secondary VM. In the even of a host failure, the secondary VM automatically takes over as the host and users won’t know the difference.
VIRTUAL VOLUMES (VVOLS)vVOLs were introduced in vSphere 6.
Storage is abstracted through a virtual datastore rather than VMFS or NFS volumes. A protocol endpoint can point to a SAN, NAS, or both.
The virtual disk now becomes the primary unit of data management at the array level
This allows VM admins greater control over storage resources for provisioning and performance tuning allowing it to be more policy driven.
vVOLs supported by these vendors:
DYNAMIC MEMORYHyper-V has the ability to dynamically assign memory to supported operating systems. Rather than assign a fixed amount of memory to allocate to a VM, you would give it a minimum, to allow for startup, and a maximum.
This can allow you to overprovision and run slightly denser virtual environments.
OS LEVEL VIRTUALIZATIONOperating system level virtualization like Docker, BSD Jails, or Solaris Zones allows you to split a single Operating system into isolated containers.
Applications are placed in isolated containers but share operating system resources.
This allows admins and developers to test/QA. alongside production on the exact same platform. This can also allow for rapid provisioning of application services.
SOFTWARE DEFINED.Everywhere and everything.
THE SOFTWARE DEFINED DATACENTER
Infr
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Compute Virtualization
Netw ork Virtualization
Storage Virtualization
In the past few years, we started to see infrastructure become virtualized on commodity x86 hardware
Rather than run specialized hardware to perform a single task, software can replace traditional hardware appliances.
THE SOFTWARE DEFINED DATACENTERBecause we’re now able to de-couple software from the hardware, we can fully automate provisioning of services and deliver business ready infrastructure in a matter of minutes in what used to take in days.
Automation tasks can be programmed as code, hence merging the roles of systems administrator and developer into one, known as “Dev Ops.”
Infr
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Compute Virtualization
Netw ork Virtualization
Storage Virtualization
Auto
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THE SOFTWARE DEFINED DATACENTERNow that we can automate and deliver infrastructure, we can deliver any application, anytime, anywhere.
In fact, services can be delivered to customers on demand just like picking an application from an app store. All of which based on role based policies and procedures.
Infr
astr
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Compute Virtualization
Netw ork Virtualization
Storage Virtualization
Auto
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Ap
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tion
IN CONCLUSIONThere’s no harm in virtualizing anything. Just about every off the shelf application supports it.
Virtualization can help you get off old hardware and keep legacy systems till they’re ready to be decommissioned.
Virtualization allows you to provision services faster, recover from disasters faster, and ensure better uptime compared to physical only methods.
Software defined EVERYTHING is the future. Get used to it or get used to saying “would you like fries with that?”
