This document shows how to migrate an ESX host from the VMware ESX release 3.5 to VMware ESX 4.0, but it is valid for any ESX 3.x, It is designed for small environments, of one or two host's, but it would not make sense since it is a manual update process, without the ability to schedule the task or perform more than one simultaneous migration or by specifying a migration order for our hosts.
This would be the last step for a successful migration of our VMware vCenter virtual environment 2.5 a VMware vCenter Server 4.0, once we already have the VMware vCenter Server in the version 4.0, we have migrated the VMware Update Manager to VMware vCenter Update Manager 4.0 and all our ESX hosts are already with ESX 4.0, we will be able to upgrade the VMware Tools to the virtual machines as well as then upgrade the virtual hardware version of the version 4 to the version 7.
We continue in the process of migrating the VMware Virtual Infrastructure environment 3 to VMware vSphere 4. We first upgraded the VMware VirtualCenter server to VMware vCenter Server, later we will have migrated the VMware Update Manager component to VMware vCenter Update Manager 4.0. After this, we will now be able to upgrade from ESX to the 4.0. All this, of course, taking into account whether our ESX hosts are fully compatible with the new version, to do this, check it in the VMware HCL.
Like VMware vCenter Update Manager, if we were using VMware VirtualCenter in our environment 2.5 the VMware Converter Enterprise, we need to update it to the latest version in order to use it in our new VMware vCenter environment 4.0. If we update the, We may continue to retain existing configurations in the previous environment or logs… It will be a process that we can carry out at any time, once we already have our VMWare vCenter server in the 4.0, We can upgrade it when we need it, once we update the Update Manager or at the end of the migration process.
After migrating our VMware vCenter server from the 2.5 to the version 4.0 (HTTP://www.bujarra.com/?p=2700) we have to update the other components that we have installed, in this case we will update the VMware Update Manager environment 1.0 that we had in VMware Virtual Center 2.5 to the new environment for use with VMware vCenter 4.0 (vSphere), called VMware vCenter Update Manager 4.0. This will be a process to be performed before proceeding with the migration of the environment 2.5 a 4.0, since after updating the Update Manager, we will update ESX hosts from version 3.x to the 4.0, and then the virtual machines (both the hardware version of the 4 to the 7 and VMware Tools to the latest version). All this in future documents.
One who is ignorant of life did not know that this existed! I was looking for how to create lists of applications by filtering certain characteristics or with certain conditions until I found that XenApp has a command line! Well, a script execution shell, that allows us to perform anything under command! Just like Microsoft's PowerShell on its servers, XenApp has a PowerShell or also called XenApp Commands. For example, a utility that can be given to it, With a command we can export all the information of the applications that we have published with all their features, Configured Users… and with another command we can import them. This as a backup is not bad at all!
These days you can try a great tool that performs some 100 Tests on our public domain, Everyone knows that it is very important to have the public domain well configured, to avoid problems especially with DNS resolution to it or any 'rare' problem’ Email. This test can be done with DNSreport from DNSstuff.com, A page we should never forget!
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