Since everyone else in the world is heralding the release of vSphere 4.1, I figured I would post some bad news. The stuff you may want to know BEFORE you jump into upgrading to vSphere 4.1. Before I start, I want to make it clear that vSphere 4.1 is a great product overall. And I have already been leaning to ESXi, so the announcement that this will be the last release with the “traditional” ESX has been expected. I will talk about ESXi and its improvements in a later post. I just want you to be aware of these rather significant Gotchas.
Gotcha #1 – Read Only Role allows members to add VMKernel NICs
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OK..I’ll admit it: I am spoiled by the capabilities of vSphere. What other platform lets you schedule system updates that will occur unattended and without outages of the applications being used? I don’t mean the winders patches, they require a monthly reboot. I am talking about the hypervisor updates. VMware Update Manager coordinates all of this for you. Then along comes vShield Zones to break it all.
First, let me explain what I am trying to do. To simplify things, vShield Zones is a firewall for vSphere Virtual Machines. Rather than regurgitate how it works, take a look at Rodney’s excellent post. A customer has decided to use vShield Zones to help with PCI Compliance. The desire is that only certain VMs will be allowed to communicate with certain other VMs using specific network ports, and to audit that traffic. ’nuff said.
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Back in April I wrote a blog aimed and the differences between ESX and ESXi. The original post was written for ESX 3.5 and with the introduction of vSphere I think it’s about time i have revisited this topic and looked at the pros and cons of ESX4 and ESX4i. Now before we dig into the technical details there is one big thing you should all be aware of. The FAQ page published by VMware states “VMware ESXi is the recommended platform for both new and existing customers. Future hypervisor releases will solely be based on this architecture.”
For most that should be enough said. After reading that I would seriously start rolling out ESXi in a lab and start figuring out how I could maintain my needs without the service console most of us have become to know and love. I would also start brushing up on the RCLI as well as the PowerCLI if you are currently dependent on scripts that run in the service console. The good news is almost everything you do today in the service console can be achieved one way or another with ESXi as well. OK with that said lets talk about some of the other limitations.
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Categories: Cloud Computing, ESX 4, Other, VMware, networking, storage Tags: Cloud Computing, Desktop Virtualization, ESX4, ESXi, vCenter, VI4, virtualization, VMware, vsphere
I went to install the VMware SDK for vSphere 4.0 on to my desktop running Windows 7 64-bit, Visual Studio 2008, and .Net 3.5 SP1 and discovered the SDK setup is not friendly with these versions. According to VMware you need Visual Studio 2005 and .Net 2.0 if you want to run the SDK.
So like most of you reading this I turned to my trusted adviser…google to find the answer I was looking for. Much to my disappointment after 5 minutes of searching around I didn’t find any instant gratification for my problem so I decided to just go ahead and figure it out on my own.
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Categories: Other, Scriptng, VMware Tags: ESX 3.5, ESX4, ESXi, Installation, Script, scripting, SDK, vCenter, VI4, Virtual Center, VMware, VMware Workstation, vsphere
We all have come to love many free services that we have integrated into our daily lives. Things like free email, free voice mail, free open source applications, free video streaming, social networking sites, operating systems, and many other services that make our lives better. At dailyhypervisor.com we are working on a new type of free service that can help all of you in the technical community. A free community lab. A free community lab would provide access to an environment that would grant everyone the opportunity to learn IT hands on and provide the ability for those who don’t have the means to test and learn about new technologies.
Tackling something of this scale will not be easy, but with help from the community hopefully we can make this something extraordinary. I personally will be donating some of my own lab equipment to the first generation of this lab environment. I’m currently working on building the lab for early beta testing by the end of March 2010. The first generation of this lab will consist of 3 servers running ESX4i. The servers have limited resources but each one consists of a single Quad-Core AMD Phenom 9850 processor, 8GB of Memory and access to 1TB of NFS storage. Access to the lab in the beginning will be by invite only much like other beta offerings. If you are interested in participating and leveraging this opportunity please register with dailyhypervisor.com and post a comment to this blog post stating your interest in participating. In your post please provide a brief description of how you would leverage this and also anything you would like to see available in the lab. All early beta users will be also to provide feedback on the lab and may be asked to participate as environment moderators once the lab goes GA. Much like community forums the goal is to make this community driven and supported by user moderators and the such.
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Categories: Community Lab, Free Stuff, XenServer, automation, vSphere Tags: Desktop Virtualization, ESX, vCenter, VI4, virtualization, VMware, vsphere
“The desktop deployment productivity tools that NetApp and DynamicOps offer significantly increase the value of virtual infrastructures by improving performance, providing essential data management resources, and reducing costs,” said Patrick Rogers, vice president of Solutions and Alliances, NetApp. “Enterprises and service providers can now offer multiple, cost-effective service level options for virtual desktop deployments by leveraging the unique orchestration of virtual storage capabilities that are part of the new DynamicOps solution.”
The full release can be found at http://www.dynmaicops.com/news/
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Back in the summer, I saw Stu’s Post about automating the installation of ESXi. I was reminded again by Duncan’s Post. Then, I found myself in a situation when a customer bought 160 blades for VMware ESXi. With this many systems, it would be almost impossible to do this without mistakes. I took the ideas from Stu and Duncan and created an ESXi automated installer that works from a PXE deployment server, like the Ultimate Deployment Appliance. I took it a step further and added the ability to use a USB stick or a CD for those times when PXE is not allowed. The document below is a result of it.
This is a little different than the idea of a stateless ESXi server, where the hypervisor actually boots from PXE. This is the installer booting from PXE so that the hypervisor can be installed on local disk, an internal USB stick or SD card. You could also use it for a “boot from SAN” situation, but extreme care should be taken so you don’t accidentally format a VMFS disk.
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Categories: Cloud Computing, ESX 4, ESXi, Scriptng, VMware, automation Tags: Automated Deployment, ESXi, Installation, VI4, VMware, vsphere
OK, so my last post brought on a blizzard of remarks questioning some of the validity of the data presented. I used what I was told during a presentation was a “Gartner recommended” configuration for a VM. My error was that I could not find this recommendation anywhere, but the sizing seems fairly valid, so I went with it. I went back to some of the assessments I have done and took data from about 2,000 servers to come up with some more real-world averages. I wanted to post these averages tonight. Remember what I said previously: This is just a set of numbers. You must ASSESS and DESIGN your virtual infrastructure properly. This is only a small piece of it.
I apologize for the images instead of tables, but I spent way too long trying to get tables to lay out properly in Wordpress. Click on the images for larger views. I can post the raw data if someone wants to look at it, but I have to work on stripping away proprietary data first. So, here we go:
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I attended the second day of the HP Converged Infrastructure Roadshow in NYC last week. Most of the day was spent watching PowerPoints and demos for the HP Matrix stuff and Virtual Connect. Then came lunch. I finished my appetizer and realized that the buffet being set up was for someone else. My appetizer was actually lunch! Thanks God there was cheesecake on the way…
There was a session on unified storage, which mostly covered the LeftHand line. At one point, I asked if the data de-dupe was source based or destination based. The “engineer” looked like a deer in the headlights and promptly answered “It’s hash based.” ‘Nuff said… The session covering the G6 servers was OK, but “been there done that.”
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The vSphere 4.0 Quick Start Guide: Shortcuts down the path of Virtualization
has finally arrived!
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I received a pre-release edition of the book at VMworld 2009. This guide has a great selection of shortcuts, tips and best practices for setting up and maintaining vSphere 4. I would be an excellent addition to any VMware administrator’s bookshelf. The book’s size also makes it a great reference for consultants as well. It will easily fit into your backpack.
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