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Unable to add host to Vcenter

  • 1.  Unable to add host to Vcenter

    Posted Dec 03, 2013 06:45 AM

    I am trying to add host on my Vcenter with it gives me error

    "Add host (name) Cannot contact the specified host (10.32.xx.xx). The host may not be available on the network, a network configuration problem may exist, or the management services

    on this host may not be responding."

    I am not a Vm expert , can anybody help. Also I can ping the ESXi host and also login to ESXi directly from the Vspeher client.

    Pls help. :smileyconfused:



  • 2.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:13 AM

    check lockdown mode on ESXi host, it should be disabled.



  • 3.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:20 AM

    Lock down mode is already in disabled state.  Also I have restarted the management agents. Didn't help. Any suggestions.

    Thank you.



  • 4.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:21 AM

    Can you tell the versions of host and vcenter?



  • 5.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:27 AM

    Version 5.1.0



  • 6.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:27 AM

    When ESX add to VC, it pust VPXA agent on ESXi host, which is not happening in above case.

    VC and ESXi are in same network or not??

    Try from some other host, connect VC from remote host,try to connect ESX

    Try from some other VC,if above case not work.

    -A



  • 7.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:29 AM

    They are same network as I can connect in to ESXi directly from Vcenter client.



  • 8.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:31 AM

    Is it a windows vcenter? If it is can you disable the firewall on the vcenter server and check again?



  • 9.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:36 AM

    It is indeed Windows Vcenter but when checked , I can see firewall already disabled.



  • 10.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:55 AM

    On esxi host,check /etc/opt/init.d/vmware-vpxa , and restart this servic

    Can you check logs, any specific message is coming??



  • 11.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 08:01 AM

    Thanks for suggestion, But am not an expert would be great help if you can tell me how to do it exactly.

    Thanks



  • 12.  RE: Unable to add host to Vcenter



  • 13.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:17 AM

    Check this KB article which will help you resolve the issue

    VMware KB: Adding an ESX/ESXi host to the vCenter Server inventory fails with the error: Call "datacenter.query…

    Its mainly due to DNS resolution or network latency. check the KB.



  • 14.  RE: Unable to add host to Vcenter

    Posted Dec 03, 2013 07:25 AM

    I am able to connect directly using HOST ip without any issue. This problem is only when I am trying to add to Vcenter.



  • 15.  RE: Unable to add host to Vcenter
    Best Answer

    Posted Dec 23, 2015 03:53 PM

    We had this same issue after updating one of our hosts with the latest patches and updates. 

    In our case we had updated the host to 5.5 u3 prior to updating our VCenter Server.  Because our VCenter was an older build of 5.5 u1, we were unable to see our host until with updated VCenter.

    Hopefully this helps someone else with this same issue. 



  • 16.  RE: Unable to add host to Vcenter

    Posted Dec 28, 2015 12:51 AM

    I have the same problem.My scenario is VcenterServer STD 5.5.0 u1, I have 3 clusters without problems. In this fourty cluster I can't add a new hosts with esxi 5.5 update 3 (vmware hp version).

    "Cannot contact the specified host. The host may not be available on the network, a network configuration problem may exist, or the management services on this host may not be responding"

    I check:

    DNS: ok
    network: all servers on the same network without FWs.

    Vsphere CLI: connect direct to host OK.

    Restarts: restart host new, restart vcenter server, no changes.

    any ideas?



  • 17.  RE: Unable to add host to Vcenter

    Posted Dec 28, 2015 09:47 AM

    Update your vCenter Server to the latest release -> 5.5.0 U3b



  • 18.  RE: Unable to add host to Vcenter

    Posted Jun 02, 2016 01:36 PM

    Renalsupport, your answer took care about the issue i had so i would say this is the correct solution, THANK YOU.:smileyhappy:

    I downloaded the latest version of VMware Vcenter 5.5 3d and just run the update and it worked perfectly.



  • 19.  RE: Unable to add host to Vcenter

    Posted Jan 14, 2016 05:02 AM

    Just had this exact same issue and thought it was SSL related, but it turns out my vCenter was update 1 and the hosts are now update 3... The other two posters are correct: Upgrading the vCenter server to update 3 fixes this issue.



  • 20.  RE: Unable to add host to Vcenter

    Posted Sep 14, 2018 12:31 AM

    I had the same issue with vCenter 6.5, ESXi running 6.5 was not getting added.


    Tried the VMware KB and finally reset of the ESXI management network fix it.

    Kind Regards,
    Ali



  • 21.  RE: Unable to add host to Vcenter

    Posted Apr 12, 2016 04:26 PM

    We had the same error message and issue as well. We could ping the guest and host but they couldn't ping each other. Disconnecting and reconnecting the nic on the vcenter VM fixed our issue.



  • 22.  RE: Unable to add host to Vcenter

    Posted Apr 17, 2016 09:25 AM

    hi ,

    Its looks like a version incompatibility between Esxi host and Vcenter server. Are they both of the same version ? If not that might be the reason for sure. Please get it checked an update back.

    Regards,

    Sanjeev



  • 23.  RE: Unable to add host to Vcenter

    Posted May 26, 2016 04:50 AM

    Hi all,

    I also have the same error, so anyone can help me fix this error please.