VM /ETC

Posts Tagged ‘virtualmachine’

Installing VMware tools on Linux virtual machines can be challenging compared to installing the tools on Windows VMs. Unfortunately the differences of various different Linux distributions do not allow a universal point and click installer to be created. Each distribution has package dependencies that must be met, and those packages are installed by different means in their respective operating systems.

In my experience a few of the Linux operating systems will complete the tools install without pre-installing the dependencies. SUSE has been one of these distributions. It seems more and more companies are both performing P2V migrations of SUSE servers or building new VMs with the OS. This fact, in turn, means that understanding how to install VMware Tools in the SUSE OS has become a more frequently asked question. I wrote the following tutorial for a client running openSUSE. Although this was written for the open source version, use this post as an example for VMware Tools installation on SLES and other Linux distributions as well. Read the rest of this entry »

There are several ways to determine if you have virtual machines with snapshots. Why you would want to know has been covered In various other posts both here at VM /ETC as well as on the other virtualization blogs. It’s so important that the virtualization community has created different tools and scripts to identify and monitor snapshot files for administrators.  So, when I read the post WWoIT – Wayne’s World of IT: Find VM snapshots in ESX/VC I had an experience that Aaron Delp described as “/HEADDESK” (when he commented on my uploading files with the VI Client post).

It may not be the fanciest of methods, but probably the quickest way to find VM snapshots is to use the ls command from the ESX Service Console. By piping the output with grep to find files with the snapshot extension, .vmsn, and using the recursive switch you can scan all the VMFS LUNs visible to an ESX host. That’s so simple it hurts!

To use the ls command to find snapshots do the following: Read the rest of this entry »

Carlo Costanzo over at ipmer.com has a great post about how to quickly and easily solve issues resulting from VM snapshots. As Carlo points out, too many administrators misunderstand the ESX snapshot to be a point in time backup and unfortunately do not realize it is instead a live and growing file. More often than not the snapshot is forgotten until the LUN is completely out of space at which time the VM is unstable. Trying to commit the snapshot becomes a time consuming burden.

The post 70GB Snapshot, YIKES! explains how Carlo used some “outside of the box” thinking to use VMware Converter to rescue VMs without going through the commit process. The idea is so simple it’s brilliant! Carlo writes:

Read the rest of this entry »

The VMware Guest Operating System Installation Guide is downloadable as a .pdf or available online. The document’s “About this Book” section summarizes it’s purpose as follows:

“This manual, the Guest Operating System Installation Guide, provides users of VMware® ESX Server, VMware® GSX Server, VMware® Server, VMware® ACE, VMware® Workstation, and VMware Fusion^TM information about choosing and installing guest operating systems for VMware virtual machines.”

There are sections of installation instructions for every past and present operating system that is supported. What I am posting from this document is a very helpful table that is a quick reference of what VMware products support which VM operating systems. This table has been copied from the online version of the guide.

This table makes it very easy to answer questions like:  Read the rest of this entry »

Just one entry this week. Take a side. Were we better off with the virtualization available 20 years ago, or are we better off today? Has it even changed at all? Justify the current technologies in the modern data center.
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The last steps of the VI3 upgrade process involve the virtual machines. Upgrading the VM hardware and the installed VM tools complete the virtual infrastructure migration, but can be a daunting task if you have numerous ESX hosts and guests. Fortunately, there are a couple of ways you can simultaneously update multiple VMs. One method uses the VI client and the other involves entering a console command on the VirtualCenter server. Read the rest of this entry »

If you’ve used any of VMware’s products you’ve probably been frustrated by trying to boot a VM from CD. Not when you install the OS, but after the VM has been operating. For example when you need to grow the size of the virtual disk and you try to boot the VM from the GParted LiveCD. The VM’s BIOS is set to boot from disk first, so you need to change the boot device order. The problem is that the boot process is so fast it seems you have less than a second to hit F2 and enter Setup, and you have to be really quick with your mouse getting the cursor inside the VM. I bet you never thought you could get aggravated over a server booting too fast! Here’s the two methods I know of to catch the VM during boot so you can enter Setup.

The first method is to Read the rest of this entry »