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vSohill
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Join a Linked Mode Group After Installation vCetner 6

Hi,

Can I joined two vCSA 6 in linked mode after vCenter been installed, the use case is vMotion cross vCenter

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vijayrana968
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Yes, you will need to repoint you new vcenter to existing external PSC controller. The Topology will  be like this.

pastedImage_0.png

You can perform the steps in KB as ITaaP​ has mentioned, for checking Site name you mentioned on both vCenter you can see http://www.virtuallyghetto.com/2015/04/vcenter-server-6-0-tidbits-part-2-what-is-my-sso-domain-name-...

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vijayrana968
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have you installed PSC internal or external ?

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vijayrana968
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I believe the existing domain is with embedded PSC where you want to join this newly installed vCenter. You can either configure replication between both PSCs or you can create a new PSC and re point both vCenters the that one.

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vSohill
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each one has it own external PSC. Should I point both vCenters to one PSC?

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ITaaP
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I believe this can only be done during the initial setup. Having a separate external PSC is correct, but they should have been configured during the deployment. One as the initial SSO domain, and the second would join that SSO domain.

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vSohill
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what is the different between PSC in the same site and not in the sam site. Is it mean within the same SSO or with the sam Geo datacenter ?

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vijayrana968
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When you saying PSC in same site, it means under the same logical object of Site name you chose during installation.

pastedImage_2.png

What are Sites in PSC 6.0?

A Site in the VMware Directory Service is a logical container in which we group the Platform Services Controllers' server objects within a vSphere Domain. You can name them in an intuitive way for easier implementation. Additionally, when Platform Services Controllers are deployed, they publish their service information (service registrations) into the defined Site. When vCenter Servers are deployed against the Platform Services Controllers, the vCenter Server will publish its service information into the Site in which the Platform Services Controller belongs. If you need to move vCenter Servers between Site, you must move their respective service information. For more information, see the section Can I repoint the vCenter Server to other PSCs in the same vSphere Domain? Can I repoint the vCenter Server to a new vSphere Domain? within this article.

For you case, have a look on this KB Reconfigure a Standalone vCenter Server with an Embedded Platform Services Controller to a vCenter S... You can re point this new vCenter to existing external PSC controller. But note that repointing option is available with 6.0 Update 1, not with 6.0 GA and 6.5 https://haveyoutriedreinstalling.com/2016/11/18/vsphere-6-5-repointing-woes/#content

All possible PSC topologies : List of recommended topologies for VMware vSphere 6.0 (2108548) | VMware KB

vSohill
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Many thanks

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ITaaP
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In your case yes. Since both your PSCs are separate SSO domains, the easiest solution without rebuilding would be to point one of your vCenters to the same PSC as the other vCenter. See instructions.

How to repoint vCenter Server 6.x between External PSC within a site (2113917) | VMware KB

Technically, after you do this, you could get rid of the unused PSC and redeploy it. This time joining it to the same SSO domain as the first PSC. Now you would have two PSCs on the same SSO domain and you could go through the repoint process again to move vCenter back to the PSC in the same site.

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vijayrana968
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Yes, you will need to repoint you new vcenter to existing external PSC controller. The Topology will  be like this.

pastedImage_0.png

You can perform the steps in KB as ITaaP​ has mentioned, for checking Site name you mentioned on both vCenter you can see http://www.virtuallyghetto.com/2015/04/vcenter-server-6-0-tidbits-part-2-what-is-my-sso-domain-name-...

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vSohill
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Thank you

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