by Edward Haletky
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Recent blog posts

Blue Gears has Moved

Blue Gears posts have moved to http://www.astroarch.com/blog
P2V as a Part of Forensics

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Two Vital Resources for Virtualization Administrators

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Forensics and Dedupe

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VMware HA failed with error....

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Understanding VMware EVC

Many people are confused about VMware EVC and how to configure this on their systems. When most people go to configure EVC they attempt to …

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VMware HA Fixed for SMB 2 node clusters

VMware HA was busted when VMware ESX 3.5 Update 2 was applied. VMware HA would fail to fire when a node was down, fail to evacuate VMs …
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3 Days at VMworld

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VMware HA with ESX v3.5 Update 3

By Edward Haletky Add a new comment

November 18, 2008, 10:52 AM — When upgrading my cluster of ESX hosts I noticed that as soon as I updated one host, HA would fail to work for that host. Errors occurred which were related to the different versions of VMware HA in use at the time.

To alleviate this issue I disabled VMware HA, updated the rest of my hosts using VMware Update Manager. Once all hosts were at the same level it was now safe to re-enable VMware HA. If I was moving VMs to the newly updated host, the fact that VMware HA was not running on that host properly caused VMotion to fail its tests. Disabling VMware HA until the upgrade process was completed also fixed that issue.

When using VMware Update Manager to upgrade hosts you may need to disable VMware HA until all hosts in the cluster are updated.

Edward L. Haletky owns AstroArch Consulting, Inc., providing virtualization, security, and network consulting and development and is an Analyst for The Virtualziation Practice. Edward graduated from Purdue University in 1988 with a degree in Aeronautical and Astronautical Engineering. Since then, he has worked with programming graphics and other lower-level libraries on various UNIX platforms. Edward is VMware vExpert, a Guru and moderator for the VMware Discussion Forums providing answers to security and configuration questions. He is the author of multiple books on Virtualization published by Prentice Hall.

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