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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I’m sure many of you have run into an issue with setting up Citrix Xen Desktop (DDC). As i was setting up a new “Desktop Group” I ran into a problem when trying to configure the vCenter SDK address. The configuration wizard show you an example that looks say ‘For example, https://VirtualCetner.example.com/sdk” which is what you would expect to use and you would also expect it to work. Think again. When you try to setup your vCenter SDK address you will be presented with and error “The hosting infrastructure could not be reached at the specified address.” Citrix takes security serious so unless you plan on replacing the default SSL certificate on your vCenter server you will need to hack out a work around. Now I would agree that in production you should replace the default SSL but if your just trying to spin up a demo or test environment it can be a hassle.
So I searched the web over and over and found a number of threads with many of ways to resolve the issue only none of them seemed to work for me. However a combination of a number of things that I found did. So I’m here to save you the trouble of finding all of various pages with partial solutions. Below you will find exactly what you need to do to make this work.
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Categories: Desktop Virtualization, ESX 4, VMware, vSphere Tags: Citrix, DDC, Desktop Virtualization, ESX 3.5, ESX4, Installation, Provisioning Server, PVS, vCenter, VI4, Xen Desktop
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
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!
|
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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A whitpaper was posted in the VMTN communities Thursday outlining the differences between the ESX 3.x and ESX 4.x service console. It further offers resources for transitioning COS based apps and scripts to ESXi via the vSphere Management Assistant and the vSphere CLI. Also mentioned briefly was the vSphere PowerCLI. If you are a developer or write scripts for VMware environments, also check out the Communities Developer section.
I hear it time and time again…The full ESX console is going away. ESXi is the way to go. I know there are valid arguments for keeping ESX around, but they are few. Failing USB keys may be a valid argument, but I have not heard of this happening. If that is the case, use boot from SAN. You need SAN anyway. As for hung VM processes, there are a few ways to address this in ESXi.
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Everyone at this point should be aware that the Service Console is now located in a vmdk on a VMFS partition. The Service Console vmdk must be stored on a vmfs datastore and the datastore must either be local stoage or SAN storage that is only presented to the one host. So I guess no shared vmfs datastores to house all the Service Consoles……. The next question I had about the new service console was the /boot partition. Where is it and how is the server bootstrapping? Well I can’t say I have totally gotten to the bottom of this yet but I have discovered a few things. When digging into scripting installations of vSphere I first looked at the disk partitioning which sheds a little light on the boot process. Here is what the disk partitioning portion of the script looks like:
part /boot –fstype=ext3 –size= –onfirstdisk
part storage1 –fstype=vmfs3 –size=30000 –grow –onfirstdisk
part None –fstype=vmkcore –size=100 –onfirstdisk
# Create the vmdk on the cos vmfs partition.
virtualdisk cos –size=8000 –onvmfs=storage1
# Partition the virtual disk.
part / –fstype=ext3 –size=0 –grow –onvirtualdisk=cos
part swap –fstype=swap –size=1600 –onvirtualdisk=cos
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Categories: ESX 4, Kickstart, Other, Scriptng, VMware, vSphere Tags: Automated Deployment, datastore, datastores, ESX4, kickstart, service console, VMware, vsphere
In a previous article, I compared syslog servers and decided to use Splunk. Splunk is easy to set up as a generic Syslog server, but it can be a pain in the ass getting the winders machines to send to it. There is a home brewed java based app on the Splunk repository of user submitted solutions, but I have heard complaints about its stability and decided that I was going to set out to find a different way to do it.
During my search, I discovered some decent (free!) agents on sourceforge. One will send event logs to a syslog server (SNARE) and one will send text based files to a syslog server (Epilog). Using the SNARE agents appear to be more stable than using the Java App and does a pretty good job. So I basically came up with a free way to set up a great Syslog server using Ubuntu Server, Splunk, SNARE and Epilog.
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Yes folks, it rears its ugly head again…Disk Alignment… If you have not read it yet, check out the whitepaper on disk alignment from VMware.
First, chethan from VMware posted a great thread on VMTN about I/O performance in vSphere. The start of the thread talks about I/O, then leads into anice discussion about block size. A couple of weeks ago, Duncan Epping posted a very informative article about block sizes. It convinced me to use 8MB blocks in VMFS designs.
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Have you ever needed an easy to reference way to see what the configuration maximums are for different versions of VMware ESX. I know I seem to need this all the time. I find it a huge pain to keep referring to each of the individual VMware documents to get the answers. Sometimes I also want to see what the changes are between versions and I can’t seem to memorize this information in my tiny little brain. So I went ahead and created a “Configuration Maximums Comparison Matrix” based on the VMware Configuration Maximums for each version.
You’ll notice some settings don’t have values for each version. This is because they were not published in the VMware documents. As I go through some additional documents and extract these values I will update the document to reflect. For no the document does include everything from the VMware Configuration maximums published for each of these Versions:
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Categories: ESX 4, VI4, VMware, vSphere Tags: ESX, ESX 3.5, ESX4, ESXi, vCenter, VI4, Virtual Center, virtualization, VMware, vsphere
