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VMware Cannot Add Host to Cluster

Posted on 2012-03-29
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Last Modified: 2012-03-29
I am trying to set up HA but am having some difficulties.

I have created a cluster, Cluster1, but when I try to add a host I am unable.  If I try to add by the name of the host as shown in the DNS portion of ESXi vCenter says "cannot contact host".  The computer is named HP3 and I've tried that as well as hp3.mycompany.lan as shown in the DNS portion.  If I try adding by IP (10.0.1.99) it says that name already exists as that is what the host is called in vCenter.

What can I do to add my hosts to a cluster?
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Question by:Drafter421
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26 Comments
 
LVL 119
ID: 37782782
check you have DNS, Reverse DNS working, and setup correctly.
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Author Comment

by:Drafter421
ID: 37782812
The DNS was not there.  It is now.  But now when I enter HP3 instead of getting cannot contact I get "the name 10.0.1.99 already exists"
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LVL 119
ID: 37782846
remove the failed server
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Author Comment

by:Drafter421
ID: 37782849
Remove from what?  It is hosting production VMs.  Will they stay online?
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LVL 119
ID: 37782862
is the server in vCenter?
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Author Comment

by:Drafter421
ID: 37782864
The ESXi server?  Yes.
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LVL 119

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 37782865
just drag and drop the server into the cluster
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LVL 119
ID: 37782869
you do not need to add the host again if already in vCenter
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Author Comment

by:Drafter421
ID: 37782870
Nothing happens when I do that.
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LVL 119
ID: 37782885
drag the host into cluster
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Author Comment

by:Drafter421
ID: 37782899
I've tried that.  Nothing happens.  After I try that the summary of the cluster says 0 hosts and 0 everything else.
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LVL 119
ID: 37782905
are you connected to vCenter?

and Hosts and Clusters is selected in Inventory?
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Author Comment

by:Drafter421
ID: 37782913
Here's picture.  When I try dragging 10.0.2.50 into Fisher Cluster nothing happens.

Document.docx
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Author Comment

by:Drafter421
ID: 37782915
Connected to vCenter = yes.
Hosts and Clusters selected = Yes.
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LVL 119
ID: 37782930
if I click a host and drag do not release button, the mouse cursor changes to a block, then move this to your cluster, a wizard will appear about resource pools
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LVL 119
ID: 37782941
Add Host option on the Cluster, should read Add New Host not in vCenter.
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Author Comment

by:Drafter421
ID: 37782944
If I drag the host (10.0.2.99) and drag it around I get the "can't put this here" symbol" everywhere except over the cluster.  When I release the host over the cluster, nothing happens.  No confirmation of any kind.  Then the summary of the cluster indicates nothing is in there.
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Author Comment

by:Drafter421
ID: 37782956
If I drag it to the Western cluster I do get an add host wizard, but not for the Fisher cluster.  Is it important which cluster it is in?
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Author Comment

by:Drafter421
ID: 37782965
They are in different physical locations.
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Author Comment

by:Drafter421
ID: 37782976
10.0.1.99 is more of a test host.  10.0.2.50 is production.  I thought I should keep those seperate.
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LVL 119
ID: 37782979
you need to move to the correct cluster
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Author Comment

by:Drafter421
ID: 37782984
Which to me should be Fisher Cluster but nothing is happening there when I try to drag the host into that.
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LVL 119
ID: 37782987
if they are both managed by vCenter should be no issues
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LVL 119
ID: 37782991
can the hosts see the same storage?
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Author Comment

by:Drafter421
ID: 37783008
I rebuilt the cluster and it works.  That was weird.  Thanks once again for all your help hanccocka.  You rock.
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Author Closing Comment

by:Drafter421
ID: 37783017
Thanks again.
0

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