4 Replies Latest reply on Feb 13, 2020 5:22 AM by scott28tt

    vSAN Cluster hosts not communicating with vCenter 6.5

    cru306 Lurker

      vSAN Cluster hosts not communicating with vCenter 6.5 and this issue resolved after vCenter reboot only ,

       

      I am using the vSAN cluster with following combination and continuously facing issue

       

      vCenter 6.5

       

      Esxi 6.5

       

      Horizon view 7.8

        • 1. Re: vSAN Cluster hosts not communicating with vCenter 6.5
          TheBobkin Virtuoso
          vExpertVMware Employees

          Hello cru306,

           

          I would advise when posting here (or anywhere really) to start by providing a lot more information - vague questions tend to get ignored or relatively useless responses (as there is no context):

          - What exact build of vCenter and ESXi are in use?(e.g. ESXi 6.5 P04, build:15256549 as opposed to "Esxi 6.5")

          - You stated this issue is recurring

                    - Is it the same host every time?

                    - Is it all hosts in the cluster or just one?

                    - Is this occurring for other hosts managed by this vCenter that are not in this vSAN cluster?

          - When did this start occurring and what changes preceded this?

          - Is there any pattern to the occurrence that you can determine? (e.g. every time you do back-ups or deploy a large pool of VMs)

          - Have you opened a Support Request with VMware GSS in relation to this? If no, why not and if yes, what were their findings?

           

          Bob

          • 2. Re: vSAN Cluster hosts not communicating with vCenter 6.5
            cru306 Lurker

            Hi Bob,

             

            Thanks for your reply .. Below my inputs.

             

            What exact build of vCenter and ESXi are in use?(e.g. ESXi 6.5 P04, build:15256549 as opposed to "Esxi 6.5")

            vCenter 6.5 - 8024368

            ESXi, 6.5.0 - 7388607

             

            - Is it the same host every time?

             

            Random not single host , but in another non vSAN cluster will be fine,

             

            Is it all hosts in the cluster or just one?

             

            all host

             

            - When did this start occurring and what changes preceded this?

             

            I am try to create the new VM but it is stuck in 5% so I am restarting the vCenter services first, then incase any issue rebooting the vCenter,

             

            Is there any pattern to the occurrence that you can determine? (e.g. every time you do back-ups or deploy a large pool of VMs)

             

            We are using linked clone so we just disable the provisioning only,

             

            Have you opened a Support Request with VMware GSS in relation to this? If no, why not and if yes, what were their findings?

             

            Yes, they also recommended to reboot the vCenter only,

             

             

            Note :we have storage controller firmware outdated alert only

            We are using two 10GB NIC , One for VDI , another one for vMoteion & vSAN (50% 50% network resource share)

             

            I am suspecting the network but network utilization not full load.

             

            Regrdsa

            Chandru GR.

            • 3. Re: vSAN Cluster hosts not communicating with vCenter 6.5
              TheBobkin Virtuoso
              vExpertVMware Employees

              Hello Chandru,

               

              Thanks for that clarifying information.

              I took a look at the notes on the Support Request and based on those + the information above this doesn't appear to be a vSAN-specific issue - that being said, there are no logs attached to that case so it's not currently possible to check whether the cluster is configured correctly etc. .

              Thus I would advise moving this question to vSphere/vCenter sub-forum (or asking a Mod to if unable) and following my colleagues advice of opening a Support Request with the relevant team (vCenter - System Management) should this issue re-occur.

               

              Bob

              • 4. Re: vSAN Cluster hosts not communicating with vCenter 6.5
                scott28tt Champion
                User ModeratorsCommunity WarriorsVMware Employees

                I have already suggested he keep everything into a single thread - there were 3 separate threads opened across the vSphere and vSAN forum areas.

                 

                This is the active thread in the vSphere forum: During the DRS Fully automated state getting multiple alert in vCenter 6.5