They 100% exist, you can see the files in the datastore when browsing and when you login directly to the ESXi host. vSphere DRS functionality was impacted due to unhealthy state vSphere Cluster Services caused by the unavailability of vSphere Cluster Service VMs. set --enabled true. Hello, after vcenter update to 7. 0. Following an Example: Fault Domain "AZ1" is going offline. Click Edit Settings, set the flag to 'false', and click Save. Ran "service-control --start --all" to restart all services after fixsts. log remain in the deletion and destroying agent loop. All vCLS VMs with the Datacenter of a vSphere Client are visible in the VMs and Template tab of the client inside a VMs and Templates folder named vCLS. When there are 2 or more hosts - In a vSphere cluster where there is more than 1 host, and the host being considered for maintenance has running vCLS VMs, then vCLS VMs will. clusters. Enable vCLS on the cluster. This includes vCLS VMs. The Supervisor Cluster will get stuck in "Removing". vCenter updated to 7. You can disable vCLS VMs by change status of retreat mode. vCLS VMs created in earlier vCenter Server versions continue to use the pattern vCLS (n). Configure and manage vSphere distributed switchesSorry my bad, I somehow missed that it's just a network maintenance. Operation not cancellable. Create Anti-Affinity for vCLS VMs rule. clusters. Unable to create vCLs VM on vCenter Server. 1. config. Right-click the cluster and click Settings. This datastore selection logic for vCLS. (Usually for troubleshooting purposes people would do a delete/recreate. First, ensure you are in the lsdoctor-master directory from a command line. This can be checked by selecting the vSAN Cluster > VMs Tab, there should be no vCLS VM listed. 06-29-2021 03:. Symptoms. Click Edit Settings, set the flag to 'true', and click. This means that vSphere could not successfully deploy the vCLS VMs in the new cluster. When disconnected host is connected back, vCLS VM in this disconnected host will be registered again to the vCenter inventory. If the vCLS VMs reside on local storage, storage vMotion them to a shared HX datastore before attempting upgrade. Since the use of parenthesis () is not supported by many solutions that interoperate with vSphere, you might see compatibility issues. Solved: Hi, I've a vsphere 7 environment with 2 clusters in the same vCenter. ; Power off all virtual machines (VMs) running in the vSAN cluster, if vCenter Server is not hosted on the cluster. 0. To avoid failure of cluster services, avoid performing any configuration or operations on the vCLS VMs. Note: vSphere DRS is a critical feature of vSphere which is required to maintain the health of the workloads running inside vSphere Cluster. Hello , We loose after the Upgrade from Vcenter 7. Runtime. There are only the two vCLS VMs on the old storage left. We tested to use different orders to create the cluster and enable HA and DRS. Enter the full path to the enable. Wait 2 minutes for the vCLS VMs to be deleted. x, and I’m learning about how VMware has now decoupled the DRS/HA cluster availability from vCenter appliance and moved that into a three VM cluster (the vCLS VMs). It is a mandatory service that is required for DRS to function normally. Or if you shut it down manually and put the host into Maintenance Mode, it won't power back on. 2. If that host is also put into Maintenance mode the vCLS VMs will be automatically powered off. vSphere DRS depends on the health of the vSphere Cluster Services starting with vSphere 7. 0 Kudos tractng. EAM is unable to deploy vCLS VMs when vpxd-extension certificate has incorrect extended key usage values (85742) Symptoms DRS stops functioning due to vCLS VMs failing to deploy through EAM. 1 (December 4, 2021) Bug fix: On vHealth tab page, vSphere Cluster Services (vCLS) vmx and vmdk files or no longer marked as. If a user tries to perform any unsupported operation on vCLS VMs including configuring FT, DRS rules or HA overrides on these vCLS VMs, cloning. If the agent VMs are missing or not running, the cluster shows a warning message. To re-register a virtual machine, navigate to the VM’s location in the Datastore Browser and re-add the VM to inventory. enabled" from "False" to "True", I'm seeing the spawing of a new vCLS VM in the VCLS folder but the start of this single VM fails with: 'Feature ‘bad. The management is assured by the ESXi Agent manager. To run lsdoctor, use the following command: #python lsdoctor. As part of the vCLS deployment workflow, EAM Service will identify the suitable datastore to place the vCLS VMs. Wait 2 minutes for the vCLS VMs to be deleted. This duration must allow time for the 3 vCLS VMs to be shut down and then removed from the inventory when Retreat Mode is enabled before PowerChute starts the m aintenance mode tasks on each host. For each cluster vCLS1 powers off at the same time each day, followed by vCLS2, followed by vCLS3. Checking this by us, having Esxi 6. enabled" Deactivate vCLS on the cluster. power on VMs on selected hosts, then set DRS to "Partially Automated" as the last step. domain-c21. 0 U1 when you need to do some form of full cluster maintenan. Most notably that the vCLS systems were orphaned in the vCenter inventory, and the administrator@vsphere. 2. What we tried to resolve the issue: Deleted and re-created the cluster. #service-control --stop --all. Right-click the datastore where the virtual machine file is located and select Register VM. clusters. During normal operation, there is no way to disable vCLS agent VMs and the vCLS service. To resolve this issue: Prior to unmount or detach a datastore, check if there are any vCLS VMs deployed in that datastore. When changing the value for " config. 0U1 install and I am getting the following errors/warnings logged everyday at the exact same time. Unmount the remote storage. 2 found this helpful thumb_up thumb_down. vsphere Cluster -> Configure -> vSphere Cluster Service -> Datastores -> Click "Add" and select preferred Datastore. But apparently it has no intention to. 1. Retreat Mode allows the cluster to be completely shut down during maintenance operations. VCLS VMs were deleted or misconfigured and then vCenter was rebooted. Check the vSAN health service to confirm that the cluster is healthy. NOTE: This duration must allow time for the 3 vCLS VMs to be shut down and then removed from theTo clear the alarm from the virtual machine: Acknowledge the alarm in the Monitor tab. If vCLS VMs are on the same host as production VMs, a host failure could affect both, potentially delaying or complicating the recovery process. m. Since upgrading to 7. This code shutdowns vCenter and ESX hosts running vSAN and VCHA. domain-c7. Create and manage resource pools in a cluster; Describe how scalable shares work; Describe the function of the vCLS; Recognize operations that might disrupt the healthy functioning of vCLS VMs; Network Operations. Click Save. Only administrators can perform selective operations on vCLS VMs. The VMs just won't start. After the hosts were back and recovered all iSCSI LUNs and recognized all VMs, when I powered on vCenter, it was full of problems. Clusters will always have 3. clusters. If this tag is assigned to SAP HANA VMs, the vCLS VM anti-affinity policy discourages placement of vCLS VMs and SAP HANA VMs on the same host. 1. thenebular • 7 mo. we are shutting. Did somebody add and set it (4x, one for each cluster), then deleted the setting? Greetings Duncan! Big fan! Is there a way to programmatically grab the cluster number needed to be able to automate this with powercli. You can however force the cleanup of these VMs following these guidelines: Putting a Cluster in Retreat Mode This is the long way around and I would only recommend the steps below as a last resort. Need an help to setup VM storage policy of RAID5 with FTT=1 with dedup and compression enabled vSAN Datastore. Reply. Resolution. vSphere DRS remains deactivated until vCLS is re-activated on this cluster. Please wait for it to finish…. Greetings Duncan! Big fan! Is there a way to programmatically grab the cluster number needed to be able to automate this with powercli. py -t. S. This means that vSphere could not successfully deploy the vCLS VMs in the new cluster. Once the tool is copied to the system, unzip the file: Windows : Right-click the file and click “Extract All…”. View GPU Statistics60. 2. Note: vSphere DRS is a critical feature of vSphere which is required to maintain the health of the workloads running inside vSphere Cluster. Click Edit Settings. 1. Ensure that the following values. get the clusters for each cluster { get the vms for each vm { get the datastore write out a line listing cluster name, vm name, datastore name } } I like it when the pseudo-code is longer than the code. Click OK. Only. 12-13 minutes after deployment all vcls beeing shutdown and deleted. Note: In some cases, vCLS may have old VMs that did not successfully cleanup. For the SD cards vs DRS vCLS VMs, how can those VMs move to SD Cards? That could be true if you are creating a datastore with the free space of the. This will power off and delete the VMs, however it does mean that DRS is not available either during that time. sh finished (as is detailed in the KB article). The agent VMs form the quorum state of the cluster and have the ability to self-healing. During normal operation, there is no way to disable vCLS agent VMs and the vCLS service. Thank you!Affects vCLS cluster management appliances when using nested virtual ESXi hosts in 7. Removed host from inventory (This straight away deployed a new vCLS vm as the orphaned vm was removed from inventory with the removal of the host) Logged into ESXi UI and confirmed that the. 2. If this is the case, then these VMs must get migrated to hosts that do not run SAP HANA. If that host is also put into Maintenance mode the vCLS VMs will be automatically powered off. The status of the cluster will be still Green as you will have two vCLS VMs up and running. as vCLS VMs cannot be powered off by Users. On the Select a migration type page, select Change storage only and click Next. Enter maintance mode f. If we ignore the issue, that ESXi host slows down on its responsiveness to tasks. vCLS hidden. Run lsdoctor with the "-r, --rebuild" option to rebuild service registrations. clusters. New vCLs VM names are now vCLS (1), vCLS (2), vCLS (3). I see no indication they exist other than in the Files view of the datastores they were deployed on. Solved: Hi, I've a vsphere 7 environment with 2 clusters in the same vCenter. Unmount the remote storage. vCLS monitoring service runs every 30 seconds. So with vSphere 7, there are now these "vCLS" VMs which help manage the cluster when vcenter is down/unavailable. There are no entries to create an agency. 03-30-2023 05:18 AM. 0 Update 1, DRS depends on the availability of vCLS VMs. Performing start operation on service eam…. The vSphere HA issue also caused errors with vCLS virtual machines. Topic #: 1. vCLS VMs can be migrated to other hosts until there is only one host left. Of course, I can't manually start the vCLSs because they are system managed vms. When the original host comes back online, anti-affinity rules will migrate at least one vCLS back to the host once HA services are running again. That datastore was probably selected based on the vSphere algorithm for checking the volume with more free space available and more paths to different hosts. The API does not support adding a host to a cluster with dead hosts or removing dead hosts from a cluster. vcDr:::protectionGroup as category for the iSCSI-FreeNAS datastore will prevent vCLS VMs to be placed on it, or in case that they're already created, they will be. n. vCLS VMs are not displayed in the inventory tree in the Hosts and Clusters tab. enabled to true and click Save. You can retrieve the password to login to the vCLS VMs. vCLS = small VM that run as part of VCSA on each host to make sure the VMs stay "in line" and do what they're configured to do. j Wait 2-3 minutes for the vCLS VMs to be deployed. If vSphere DRS is activated for the cluster, it stops working and you see an additional warning in the cluster summary. Log in to the vCenter Server Appliance using SSH. Change the value for config. 1st - Place the host in maintenance so that all the Vm's are removed from the Cluster; 2nd - Remove the host from the Cluster: Click on connection then on disconnect; 3rd click on remove from inventory; 4th Access the isolated esxi host and try to remove the datastore with problem. 2 found this helpful thumb_up thumb_down. Disconnected the host from vCenter. 0 Update 3 environment uses the pattern vCLS-UUID. . This folder and the vCLS VMs are visible only in the VMs and Templates tab of the vSphere Client. In the value field " <cluster type="ClusterComputeResource" serverGuid="Server GUID">MOID</cluster> " replace MOID with the domain-c#### value you collected in step 1. Resolution. Be default, vCLS property set to true: config. 4. Reply. 0 U1c and later. All vcls get deployed and started, after they get started everything looks normal. In this path I added a different datastore to the one where the vms were, with that he destroyed them all and. 0 Kudos Ian2498. Repeat these steps for the remaining VCLS VMs until all 3 of them are powered on in the cluster Starting with vSphere 7. Otherwise it puts vsan in maintenance mode, all the hosts in maintenance mode, then shuts them down. When you do this vcenter will disable vCLS for the cluster and delete all vcls vms except for the stuck one. 0 Update 1. vCLS VMs are always powered-on because vSphere DRS depends on the availability of these VMs. For vSphere virtual machines, you can use one of the following processes to upgrade multiple virtual machines at the same time. Wait 2 minutes for the vCLS VMs to be deleted. Right-click the moved ESXi host and select 'Connection', then 'Connect'. Unless vCenter Server is running on the cluster. vCLS VM is a strip-down version of the photon with only a few packages installed. Right-click the virtual machine and click Edit Settings. Click Edit Settings. These VMs are created in the cluster based on the number of hosts present. The vCLS monitoring service initiates the clean-up of vCLS VMs. If you want to get rid of the VMs before a full cluster maintenance, you can simply "enable" retreat mode. The cluster has the following configuration:•Recover replicated VMs 3 vSphere Cluster Operations •Create and manage resource pools in a cluster •Describe how scalable shares work •Describe the function of the vCLS •Recognize operations that might disrupt the healthy functioning of vCLS VMs 4 Network Operations •Configure and manage vSphere distributed switchesvSphere DRS and vCLS VMs; Datastore selection for vCLS VMs; vCLS Datastore Placement; Monitoring vSphere Cluster Services; Maintaining Health of vSphere Cluster Services; Putting a Cluster in Retreat Mode; Retrieving Password for vCLS VMs; vCLS VM Anti-Affinity Policies; Create or Delete a vCLS VM Anti-Affinity Policy; Create a vSphere. vcls. vCLS is also activated on clusters which contain only one or two hosts. Resolution. September 21, 2020 The vSphere Clustering Service (vCLS) is a new capability that is introduced in the vSphere 7 Update 1 release. #python lsdoctor. Die Lebenszyklusvorgänge der vCLS-VMs werden von vCenter Server-Diensten wie ESX Agent Manager und der Steuerungsebene für Arbeitslasten verwaltet. No luck so far. Ensure that the managed hosts use shared storage. The VMs just won't start. Cause. the solution could be glaringly obvious. vCLS is also a mandatory feature which is deployed on each vSphere cluster when vCenter Server is upgraded to Update 1 or after a fresh deployment of vSphere 7. The shutdown still fails, i'm just analyzing the pcnsconfig. Do note, vCLS VMs will be provisioned on any of the available datastores when the cluster is formed, or when vCenter detects the VMs are missing. If a disconnected host is removed from inventory, then new vCLS VMs may be created in. py -t. terminateVMOnPDL is set on the hosts. To ensure cluster services health, avoid accessing the vCLS VMs. Password reset succeeds but the event failure is due to missing packages in vCLS VM which do not impact any of the vCLS functionality. Both from which the EAM recovers the agent VM automatically. The vCLS agent VMs are lightweight, meaning that resource consumption is kept to a minimum. The solution for that is easy, just use Storage vMotion to migrate the vCLS VMs to the desired datastore. DRS Key Features Balanced Capacity. This is the long way around and I would only recommend the steps below as a last resort. These VMs should be treated as system VMs. Placing vCLS VMs on the same host could make it more challenging to meet those. The vCenter certificate replacement we performed did not do everything correctly, and there was a mismatch between some services. cmd . Following an Example: Fault Domain "AZ1" is going offline. With DRS in "Manual" mode, you'd have to acknowledge the Power On Recommendation for each VM. vCLS is also activated on clusters which contain only one or two hosts. 2 Kudos JvodQl0D. Actual exam question from VMware's 2V0-21. Drag and drop the disconnected ESXi host from the within the cluster 'folder' to the root of the Datacenter. vCLS. Madisetti’s Theories on vCLS VMs and DRS 2,0 VMware seeks to exclude as untimely Dr. The host is hung at 19% and never moves beyond that. Configuring Host Graphics61. vmware. A quorum of up to three vCLS agent virtual machines are required to run in a cluster, one agent virtual machine per host. clusters. 2. VCLS VMs were deleted and or previously misconfigured and then vCenter was rebooted; As a result for previous action, vpxd. DRS Key Features Balanced Capacity. In this demo I am going to quickly show you how you can delete the vCLS VMs in vSphere/vCenter 7. This workflow was failing due to EAM Service unable to validate the STS Certificate in the token. Run lsdoctor with the "-r, --rebuild" option to rebuild service registrations. And the event log shows: "Cluster Agent VM cannot be powered on due to insufficient resources on cluster". These VCLS files are now no longer marked as possible zombies. Click the Monitor tab. I have now seen several times that the vCLS VMs are selecting this datastore, and if I dont notice it, they of course become "unreachable" when the datastore is disconnected. vcls. The vCLS VM is created but fails to power on with this task error: " Feature 'MWAIT' was absent, but must be present". As soon as you make it, vCenter will automatically shut down and delete the VMs. Live Migration requires the source and destination hosts to have CPUs. 0 Kudos 9 Replies admin. This folder and the vCLS VMs are visible only in the VMs and Templates tab of the vSphere Client. It's the same mechanism that manages agent VMs for HA. You can disable vCLS VMs by change status of retreat mode. vCLS = small VM that run as part of VCSA on each host to make sure the VMs stay "in line" and do what they're configured to do. " You may notice that cluster (s) in vCenter 7 display a message stating the health has degraded due to the unavailability of vSphere Cluster Service (vCLS) VMs. When there is only 1 host - vCLS VMs will be automatically powered-off when the single host cluster is put into Maintenance Mode, thus maintenance workflow is not blocked. While playing around with PowerCLI, I came across the ExtensionData. The default name for new vCLS VMs deployed in vSphere 7. But the real question now is why did VMware make these VMs. 0. For a Live Migration, the source host and target host must provide the same CPU functions (CPU flags). Impact / Risks. 0 U1 VMware introduced a new service called vSphere Cluster Services (vCLS). config. A vCLS VM anti-affinity policy describes a relationship between VMs that have been assigned a special anti-affinity tag (e. Removed host from inventory (This straight away deployed a new vCLS vm as the orphaned vm was removed from inventory with the removal of the host) Logged into ESXi UI and confirmed that the. 3. Coz when the update was being carried out, it moved all the powered on VMs including the vCLS to another ESXi, but when it rebooted after the update, another vCLS was created in the updated ESXi. This can generally happens after you have performed an upgrade on your vCenter server to 7. See vSphere Cluster Services for more information. Datastore enter-maintenance mode tasks might be stuck for long duration as there might be powered on vCLS VMs residing on these datastores. This post details the vCLS updates in the vSphere 7 Update 3 release. This can be checked by selecting the vSAN Cluster > VMs Tab, there should be no vCLS VM listed. xxx. 3, 20842708. But honestly not 100% certain if checking for VMware Tools has the same underlying reason to fail, or if it's something else. The vCLS virtural machine is essentially an “appliance” or “service” VM that allows a vSphere cluster to remain functioning in the event that the vCenter Server becomes unavailable. I click "Configure" in section 3 and it takes the second host out of maintenance mode and turns on the vCLS VM. Cluster1 is a 3-tier environment and cluster2 is nutanix hyperconverge. In an ideal workflow, when the cluster is back online, the Cluster is marked as enabled again, so that vCLS VMs can be powered on, or new ones can be created, depending on the vCLS slots determined on the cluster. The vCLS agent virtual machines (vCLS VMs) are created when you add hosts to clusters. When datastore maintenance mode is initiated on a datastore that does not have Storage DRS enabled, an user with either Administrator or CloudAdmin role has to manually storage migrate the Virtual Machines that have vmdks residing on the datastore. [05804] [Originator@6876 sub=MoCluster] vCS VM [vim. these VMs. Fresh and upgraded vCenter Server installations will no longer encounter an interoperability issue with HyperFlex Data Platform controller VMs when running vCenter Server 7. A datastore is more likely to be selected if there are hosts in the cluster with free reserved DRS slots connected to the datastore. Follow VxRail plugin UI to perform cluster shutdown. Note: After you configure the cluster by using Quickstart, if you modify any cluster networking settings outside of Quickstart, you cannot use the Quickstart. 06-29-2021 03:34 AM. vCLS uses agent virtual machines to maintain cluster services health. VCSA 70U3e, all hosts 7. 1. 0, vCLS VMs have become an integral part of our environment for DRS functionality. Boot. Rod-IT. So I added the hosts back in to vCSA 7, and then used "Remove from. Navigate to the vCenter Server Configure tab. The architecture of vCLS comprises small footprint VMs running on each ESXi host in the cluster. Go to the UI of the host and log in Select the stuck vcls vm and choose unregister. Change the value for config. wcp. Go to the UI of the host and log in Select the stuck vcls vm and choose unregister. chivo243. 300 seconds. The vCLS monitoring service initiates the clean-up of vCLS VMs. Click Edit Settings, set the flag to 'false', and click Save. 15. vSphere Cluster Services (vCLS) VMs are moved to remote storage after a VxRail cluster with HCI Mesh storage is imported to VMware Cloud Foundation. I followed u/zwarte_piet71 advice and now I only have 2 vCLS VMs one on each host, so I don't believe the requirement of 3 vCLS is correct. On the Select storage page, select the sfo-m01-cl01-ds-vsan01 datastore and. 10Aug 12th, 2021 at 9:13 AM check Best Answer. 2. After the Upgrade from Vcenter 7. You cannot find them listed in Host, VM and Templates or the datastore view. 0 Update 1. after vCenter is upgraded to vSphere 7. All vCLS VMs with the. The tasks is performed at cluster level. vSphere DRS in a DRS enabled cluster will depend on the availability of at-least 1 vCLS VM. Browse to the host in the vSphere Client. Be default, vCLS property set to true: "config. i Enable vCLS on the cluster. 12Configure Virtual Graphics on vSphere60. A vCLS VM anti-affinity policy discourages placement of vCLS VMs and application VMs on the same host. In these clusters the number of vCLS VMs is one and two, respectively. The vCLS agent VMs are tied to the cluster object, not the DRS or HA service. 0 U2a all cluster VMs (vCLS) are hidden from site using either the web client or PowerCLI, like the vCenter API is. 2015 – Reconnect session (with Beth Gibson -First Church of Christ, Scientist) April 2016 –. Put the host with the stuck vcls vm in maintenance mode. these VMs. The new timeouts will allow EAM a longer threshold should network connections between vCenter Server and the ESXi cluster not allow the transport of the vCLS OVF to deploy properly. service-control --start vmware-eam. Simply shutdown all your VMs, put all cluster hosts in maintenance mode and then you can power down. 0. vCLS VMs hidden. Things like vCLS, placeholder VMs, local datastores of boot devices, or whatever else i font wanna see on the day to dayWe are using Veeam for backup, and this service regularly connects/disconnects a datastore for backup. 0 U1 With vCenter 7. We would like to show you a description here but the site won’t allow us. The feature that can be used to avoid the use of Storage vMotion on the vCLS VMs when performing maintenance on a datastore is vCLS Retreat Mode, which allows temporarily removing the vCLS VMs from the cluster without affecting the cluster services. vCLS uses agent virtual machines to maintain cluster services health. To solve it I went to Cluster/Configure/vSphere cluster services/Datastore. enabled = false it don´t delete the Machines. Custom View Settings. Some datastores cannot be selected for vCLS because they are blocked by solutions like SRM or vSAN maintenance mode where vCLS cannot. Right-click the ESXi host in the cluster and select 'Connection', then 'Disconnect'. See vSphere Cluster Services for more information. If vCenter Server is hosted in the vSAN cluster, do not power off the vCenter Server VM. I am also filtering out the special vCLS VMs which are controlled automatically from the vSphere side. The three agent VMs are self-correcting. For clusters with fewer than three hosts, the number of agent VMs is equal to the number of ESXi hosts. We would like to show you a description here but the site won’t allow us. The vCLS VMs are created when you add hosts to clusters. 00200, I have noticed that the vast majority of the vCLS VMs are not visable in vCenter at all. Because the METRO Storage Containers are deleted make sure they are recreated again to match the name from the. cmd file and set a duration for the command file e. Enable vCLS for the cluster to place the vCLS agent VMs on shared storage. vCLS VMs from all clusters within a data center are placed inside a separate VMs and templates folder named vCLS. Due to the mandatory and automated installation process of vCLS VMs, when upgrading to vCenter 7. Resource Guarantees: Production VMs may have specific resource guarantees or quality of service (QoS) requirements. The workaround is to manually delete these VMs so new deployment of vCLS VMs will happen automatically in proper connected hosts/datastores. As operações de ciclo de vida das VMs do vCLS são gerenciadas por serviços do vCenter, como ESX Agent Manager e Workload Control Plane. Prior to vSphere 7. Wait a couple of minutes for the vCLS agent VMs to be deployed. As a result, all VM(s) located in Fault Domain "AZ1" are failed over to Fault Domain "AZ2". tag name SAP HANA) and vCLS system VMs. . Note: Please ensure to take a fresh backup or snapshot of the vCenter Server Appliance, before going through the steps below. vcls. Within 1 minute, all the vCLS VMs in the cluster are cleaned up and the Cluster Services health will be set to Degraded. Article Properties. Question #: 63. I have a 4node self managed vsan cluster, and once upgrading to 7U1+ my shutdown and startup scripts need tweaking (bc the vCLS VMs do not behave well for this use case workflow). Restart all vCenter services. <moref id>. I posted about “retreat mode” and how to delete the vCLS VMs when needed a while back, including a quick demo. We have 5 hosts in our cluster and 3 vcls vms, but we didn't deploy them manually or configure them. Thats a great feature request for VMware I just thought of. Impact / Risks. I’ve have a question about a licensing of the AOS (ROBO per per VM). In a lab environment, I was able to rename the vCLS VMs and DRS remained functional. It's first release provides the foundation to. The cluster shutdown feature will not be applicable for hosts with lockdown mode enabled.