8/3/2023 0 Comments Esxi ephemeral ports![]() In a VMware vSphere environment using Virtual Distributed Switches (VDS) where all VMs including vCenter is hosted on the VDS, What is the most suitable Port Binding setting for dvPortgroups to ensure maximum performance and availability?ġ. Distributed vSwitches and vCenter outage, what’s the deal? – (VCDX #007) Example Architectural Decision – Port Binding Setting for a dvPortGroupĢ. So we don’t need to imagine an outage, the above shows the process start to finish and its only a few minutes to be fully operational!ġ. In the video, the Nutanix controller VM is using a dvPortGroup with Ephemeral Binding, however Static Binding is also fully supported. Here is a Video showing how a Nutanix environment recovers with vCenter offline with everything including the Nutanix CVMs connected to a VDS. NET2745 – vSphere Distributed Switch: Technical Deep Dive I highly recommend watching this recording of a VMworld session by (VCDX#104) & which covers Distributed Switches in depth. Long story short, none of the above are problems and the author of the tweet is simply mistaken. In the event of an outage where vCenter (VC) is on a VDS and the underlying storage is presented via NFS by Nutanix, that this is somehow worse than if the storage was presented by another storage vendor. Nutanix environments have problems with VDS deploymentsĤ. Having vCenter (VC) running on an NFS datastore is a problemģ. ![]() If vCenter (VC) is on a VDS there is a problem in the event of an outageĢ. My interpretation was the tweet was suggesting/implying the following:ġ. I saw this tweet (below) and was inspired to write this post as is appears there is still a clear misunderstanding of how the VMware Virtual Distributed Switch (VDS) functions when vCenter is down. The good news is VMware have already resolved this issue in ESXi Update 2 (Release: 2068190) so I recommend bypassing Update 1 (due to the NFS bug) and going straight to Update 2 which means you will avoid the issue altogether. To future proof the environment, you may choose to create a dvPortGroup for the Infrastructure VMs and use Ephemeral Binding, or just have a dvPortGroup with Ephemeral binding ready to use just in case. If you don’t have a dvPortGroup with Ephemeral binding, create a Standard vSwitch and connect a single NIC to it, follow the same process, then migrate the VMs back to the dvPortGroup once they are online and return the pNIC to the dvSwitch. Once everything is back online, I recommend you connect all VMs back to their original dvPortGroup/s with Static Binding. This could be used for VMs such as Domain Controllers and vCenter (and its dependencies) then once these VMs are online, this will allow all other VMs to connect to the network normally. If you are having this problem you can connect the VMs to a dvPortGroup which uses Ephemeral Binding to get the environment online. You may receive the following error when trying to reconnect the vmNIC. When configured with Static Port Binding, which is the default and recommended port binding setting (See VMware KB: 1022312) after a HA event, a problem has been discovered which prevents VMs from connecting to the network and the VM starts up with its vmNIC in a “Disconnected” state. If you’re running ESXi 5.5 pre Release 2068190 (Update 2) and have not upgraded from GA release or are avoided upgrading due to the NFS issue in Update 1 and are running on a vSphere Distributed Switch (VDS) then read on:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |