Upgrade ESXi Host

Make a mistake today and write it down to avoid repeating it.

The beans found that VMware Update Manager seemed to be out of work and our cluster had not been upgraded for a long time, so we excitedly re-installed the VMware Update Manager and then put all the patches on ESXi 5.5.

Originally thought is a very simple work, security, first upgrade a host to try. Turn off Ha, and then do the following on the host's Update Manager Attach baseline (select Base Group), Scan (scan), stage (download) and then remediate (patch), and then see the progress bar dead on 25%. After the manual connection restart, I found that the tragedy occurred, I can not add this host to vcenter, but I directly access the host is no problem.

The following is an error. The fact that this error is misleading, if follow this error to find the problem, can not find, because the DNS resolution, network connection, port configuration, VCenter Agent services and so on are normal operation.

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The problem is that I upgraded the host to the latest version (5.5 Update 3), but my vcenter is still in the old version (5.5 Update1), so I can't connect.

In order to determine the problem caused by the upgrade, the beans are rolled back to the hypervisor version in the following manner and can then be successfully added back to vcenter.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1033604

The problem is confirmed, the correct upgrade step should be to upgrade vcenter First, then upgrade host.

The operation is as follows:

1. Download the corresponding vcenter 5.5 Update3 ISO image file on the official website, about 3G

2. Upgrading vcenter

The current vcenter version is shown below.

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My vcenter is a Windows version, put in an ISO image, directly upgrade vcenter server.

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About 20 minutes to upgrade, you can see the version number directly into the Update3.

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3. Upgrade Host

Load baseline, scan, download patches, install patches

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Successfully installed

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This article is from the "Mapo Tofu" blog, please be sure to keep this source http://beanxyz.blog.51cto.com/5570417/1723429

Upgrade ESXi Host