There are various reasons. 2 to 2. vmware. vSphere HA is failed over the operation in progress in the cluster in data center. vSphere Availability describes vSphere HA functionality. Another option would be to change the Admission Control policy in the HA Cluster settings to "Percentage of resources reserved for failover". Click Events. vSphere HA initiated a failover action : com. To disable/enable the vSphere HA in the vSphere Web Client:Verify that VMware HA is only attempting to configure on one Service Console. Cause. Cannot find vSphere HA primary agent : Monitors whether vCenter Server is able to connect to a vSphere High Availability primary agent. You can also Initiate. How to fix it. vSphere High Availability (HA) failover resources are insufficient To resolve this problem, use similar CPU and memory reservations for all virtual machines in the cluster. Cause. VMware has qualified vCenter high availability with vCenter 5. After patching ESXi to 7. You absolutely should not be using RAID0 and you're misunderstanding how HA works. Veeam VMware: Insufficient vSphere HA Failover Resources Alarm. Passive node in Cluster B. If any of the nodes fails, the cluster is considered to be in a degraded state. Note vSphere High Availability (vSphere HA) supports a clustering solution in conjunction with vCenter Server clusters. This feature moves us away from setting non-descript, easily forgettable. YELLOW Status: Insufficient vSphere HA Failover Resources Alarm (to yellow) GREEN (clear) Status: To disable vSphere HA in the vSphere Web Client: Log in to the vSphere Web Client. Using the vSphere Web Client. 0 we are using vSphere 6. To restart a Secondary VM, vSphere HA requires that the Primary VM be running on a host that is in the same partition as the one containing the vSphere HA primary host responsible for the FT pair. x, HA is provided by the Fault Domain Manager (FDM) agent deployed on each of the HA cluster hosts. Decide if you want to. Thank you. Using the vSphere Web Client. 0 Availability Guide. Illustrates how to reconfigure HA Cluster to ADD specified advanced option, if it. Hi, I am using ESXi 6. You can configure vSphere Lifecycle Manager to remediate hosts in parallel. To keep your. vSphere HA host status Hello Team, I see more often that on vSphere HA failover in progress on vSphere Cluster, as a workaround disabling/enabling HA will fix the issue. This knowledge base article addresses the alert message “vSphere HA failover operation in progress” that may appear at the cluster level. To disable/enable the vSphere HA in the vSphere Web Client:VMware HA and DRS Clusters Vs. R not enough resources to satisfy the Vsphere HA failover the cluster level. Percentage of cluster resources reserved. Best practice: Use vSphere HA-enabled clusters to deploy HCX. Cause. TomIn a partitioning scenario, each partition will have its own primary node. 0 or later. 5 or 6. After the failover finishes, you must restart the remediation task on the new node. And restore the HA cluster configuration, incase there is a failure. Reduce the planned downtime for common maintenance operations. Automatic failover The Passive node attempts to take over the active role in case of an Active node failure. To enable HA repeat the above steps and select Turn on VMware HA option. vSphere HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. You Can Minimize Downtime with vSphere. Cluster. vSphere HA failover operation in progress in cluster VxRail-Cluster in datacenter VxRail-Datacenter: 0 VMs being restarted, 3 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. Select vSphere Availability in the Services section of the Configure page for your cluster. name} in datacenter {datacenter. 0. To configure your cluster host networking and services manually by referring to different parts of the vSphere software, click the Skip quickstart button. To make changes to the vSAN network, you must take the following steps in the vSphere Client: . Known Issues HA. Configure Admission Control38. HA determines whether the current failover capacity is less than the configured failover capacity (provided by the user). Using the vSphere Web Client. Tom i dont have any triggered alarms. Note: Any virtual machine network adapters that are not connected to a port group (standard or distributed) may cause the issue. In all my years of supporting VMware (close to more than fifteen to be exact) WSFA were a terrible thing to have due to complexity. As a result, VMware vSphere HA is configured to tolerate the failure of a single host. 1. To disable/enable the vSphere HA in the vSphere Web Client:VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. How can I get rid of this error? vSphere HA failover operation in progress in cluster TGCSNET-Vcenter1-Cluster in datacenter Datacenter-TGCSNET: 0 VMs being restarted, 5 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. Procedure. Best Practices for VMware vSphere256 High Availability. Step 2: Create a cluster. Cluster. . In some cases the HA enablement task fails with " Cannot find vSphere HA. Right-click the cluster and select Edit Settings. 7 I found that just turning off Host Monitoring then back on in the Edit Cluster Settings dialog (de-select "Enable Host Monitoring", click OK, then go back in to Edit Cluster Settings and re-select "Enable Host Monitoring" and click OK) cleared this message and was quick to execute - didn't ne. Cause. Tom A partition is extremely uncommon in normal environments but may happen in a stretched cluster. HA failover does not occur after setting Traffic Type option on a vmknic to support witness traffic. vSphere Fault Tolerance Provides Continuous Availability. vSphere HA Cluster (& ESXi hosts) Reconfiguration utility. Configure Heartbeat Datastores vSphere HA uses datastore heartbeating to distinguish between hosts that have failed and hosts that reside on a network partition. 0. 5 host with 8 VMs running, we do a power reset from HP ilo, all the VM´s are migrated to other hosts succesfully after some minutes but there is a message displayed in vCenter Server, the message is: "VMs awaiting a retry: a previous restart attempt failed, and vSphere HA. Expand the vSphere cluster and navigate to the transport nodes that are in a partial success state. In the vCenter GUI, use the Hosts and Clusters view, Right-click the ESXi host and select Connection > Disconnect. Cause. Resolution. When you create a vSphere HA cluster, a single. If there is only one vSphere HA-enabled host, an operation is not allowed, even if there is a sufficient percentage of resources available. Clustering virtual machines can reduce the hardware costs of traditional high-availability clusters. Reduce Planned Downtime with vSphere. vSphere HA Checklist31. Select Enable VMware HA. 0 or later version. Click Edit. Resolution. Each host in the cluster functions as a primary host or a secondary host. If you’re using vSphere client, change the view to “Hosts and Clusters”, right-click on the cluster name, select “Cluster Features” and click on the “Turn On vSphere HA” check-box (Figure 3). How can I tell which VMs moved? We have logInsight installed and I can see where the cluster re-elects itself, but the rest of the log entries are indecipherable. failed. . Using the vSphere Web Client. In the left pane, click VMware HA. The most recent. To enable the Bash shell, enter shell at the appliancesh prompt. Step 5. Insufficient vSphere HA failover resources I have a cluster consisting of two ESXi hosts. Symptoms include all of the following:. When vSAN and vSphere HA are enabled for the same cluster, the HA interagent traffic flows over this storage network rather than the. Monitors the sufficiency of failover cluster resources required for vSphere High Availability. HA. Hosts in the cluster are. See VMware online documents such as Troubleshooting VMware High Availability and the vSphere Troubleshooting Guide to resolve HA issues. disabled. vSphere HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. 5, the vCenter High Availability feature was introduced. VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. Depending on the task, it can be enabled on all or a subset of the nodes. vSphere HA and DRS could be used together to take advantage of automatic failover and load. HA on all hosts (ESX 3. ”. 2. A very interesting one is CPU Topology for virtual machine configuration. ConnectedToMaster :. 0 U3b are no longer available for download due to several critical issues identified in them. Based on your plan for the resources and networking architecture of the cluster, use the vSphere. For information regarding this decision, Please refer to KB 86398. vSphere Cluster. Setup for Windows Server Failover Cluster in VMware vSphere 7. Right-click the cluster and click Settings. When vSphere HA or Fault Tolerance take action to maintain availability, for example, a virtual machine failover, you can be notified about such changes. vSphere proactive HA will detect hardware conditions of a host and allow you to evacuate the VMs before the issue causes a vSphere HS failover in progress. External. • Specify a Failover Host. Thank you. Select Advanced Options Option1: Configure a vSphere HA Isolation address. Cluster. Using the vSphere Web Client. mode : warning : Failover cannot proceed. TomCluster config Issue: vSphere HA initiated a failover action on 1 virtual machines in cluster LabCluster on datacenter DC01. This problem is caused by the dependency on VMware HA being available for normal operation of stretched cluster sites. In the vSphere Web Client, the same notification can be found by selecting the referenced data center and navigating to Issues under the Monitor tab. 1 Kudo tdubb123. Not using identical host hardware in the VMware vSphere HA cluster. Right-click on the cluster > ClusterFeatures > HA vSphere > select Disable: 'allow the VM Power on operation that violate constraints of availability. How can I get rid of this error? vSphere HA failover operation in progress in cluster TGCSNET-Vcenter1-Cluster in datacenter Datacenter-TGCSNET: 0 VMs being restarted, 5 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. From the Home screen, click on Hosts and Clusters. vSphere-HA folder, vSphere HA configuration fails for the entire cluster. vSphere Cluster HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. Next, select “vSphere HA” and make sure that the “Enable Host Monitoring” check-box is selected (Figure 4). No it is not supported at this time. And while there’s ways to increase availability for vCenter Server, think about vSphere High Availability (HA) and vCenter Server High Availability (VCHA), its. iso. Unfortunately there is no option to remove or acknowledge the message. Disable, then re-enable vSphere HA for the cluster per Configuring vSphere Availability Settings. . Disconnect, then reconnect the ESXi host to vCenter. 7 U1 and vSAN 6. VMware High Availability failover virtual machines to other available hosts. To confirm exiting the simplified configuration workflow, click Continue. vSphere HA is failed over the operation in progress in the cluster in data center. Cause. Browse to the cluster. In most cases, performing synchronization first is best. this monitor tracks the vCenter alarm alerting that vSphere HA failover in progress. Hello, I am experimenting with VMware vSphere and High Availability for days now. The HA notice the unreachable hosts, starts the process, but its stuck in " vSphere HA failover operation in progress blablabla 1 VMs waiting for resources, 0 inaccessible vSAN VMs". vmware. vSphere HA failover in progress : Monitors the failover progress of vSphere High Availability. Apparantly, all VMs are up&runnig (according to our monitoring), so I assume this is cosmetic. Resolution. When I create a 2-node HA Cluster, is this possible to be handled with two physical mashine. Configuration. Select the vCenter Server. Earn Credits. Cause. Click vSphere HA located under Services. 7u1. 0 Update 3 - HA can no longer be successfully enabled. 0 Update 2a. VMware says that vCLS uses agent virtual machines (vCLS VMs) to maintain the health of cluster services, even if the vCenter Server is not available. A Stand-Alone deployment might look something like this. Select the affected cluster at which the removal of the host is failing 3. once DNS is confirmed, you can reinstall the HA agents by right clicking the Cluster --> edit settings --> Uncheck DRS/HA checkboxes --> OK. 0 Update 3 - HA can no longer be successfully enabled. vSphere 8 contains many interesting new features. vSphere HA failover in progress : Monitors the failover progress of vSphere High Availability. A vCenter HA cluster consists of one Active node that serves client requests, one Passive node to take the role of Active node in the event of failure and one quorum node, called the Witness node. For details please see vSphere Availability. How vSphere HA Works. Resolving Failover Failures When a Passive node does not become the Active node during a. Dear VMware Community, I have a single vCenter Server v7. If HA is not enabled in your cluster, go to the Configure tab of your cluster and then to the vSphere Availability tab available in Services. 0 Cluster Configuration Issue: vSphere HA failover operation in progress in cluster <cluster-name> in datacenter <datacenter-name>: 0 VMs being restarted, 1 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs FDM does not require that DNS be configured on the hosts, nor does FDM rely on other Layer 3 to 7 network services. vSphere HA is failed over the operation in progress in the cluster in data center. Review the changes and click Finish to start the failover operation. Key benefits. To disable/enable the vSphere HA in the vSphere Web Client:The primary host of a VMware vSphere ® High Availability cluster is responsible for detecting the failure of secondary hosts. . The challenge being that cluster services, like the vSphere Distributed. name} in datacenter {datacenter. 0 and vSAN 6. By following the previous articles, you will gain a comprehensive understanding of how High Availability (HA) functions and acquire the necessary guidance to configure and manage your vSphere HA effectively. vSphere HA virtual machine failover failed. vRealize Operations supports high availability (HA). Workaround: Disable vSphere HA before performing vMotion, VM creation, or powering on VMs. By default, the alarm is triggered by the following events: com. Using the vSphere Web Client. Configuring vSphere Availability Settings34. Tom This monitor tracks the vCenter alarm alerting that vSphere HA failover in progress. Select the “Use latest available data” option if the source virtual machine is to remain powered on. Purpose. Temporary disable HA, put the host into the maintenance mode, do your required operations and then bring everything back. Although you cannot modify these settings, familiarity with them. Resource and software requirements and the networking setup must also be considered carefully. HA. HA. I unregistered them from the host and they are now listed as Orphaned and remove from inventory is still grayed out. vc. With the resources failover policy in place, vSphere HA uses the following calculations to control virtual machine migration in the cluster. If the secondary host has stopped datastore. Go and select Cluster object > Configure, and within the Services section select vSphere Availability > Edit. For more information about HA in vCenter Server 5. Place orders quickly and easily; View orders and track your shipping status; Enjoy members-only rewards and discounts; Create and access a list of your products The vmware cluster is complaining with the amber triangle Code: Select all vCLS-98b596cf-d0d2-4cac-a45d-f39bf856e762: vSphere HA virtual machine failover failed vSphere HA failover operation in progress in cluster Cluster1 in datacenter XXXXXX: 0 VMs being restarted, 1 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs In 6. Resolution. The reset ensures that services remain available. To disable/enable the vSphere HA in the vSphere Web Client:Answer. TomvSphere HA virtual machine failover in progress alarm is reported to a powered off VM after scheduled host replacement completed: vSphere HA failover in progress vSphere HA failover operation in progress in cluster Cluster-1 in datacenter SDDC-Datacenter: 0 VMs being restarted, 1 VMs waiting for a retry, 0 VMs waiting for. marquesj. Perform a vSphere Replication recovery of the virtual machine. The active-passive architecture of the solution can also help. Details VMware High Availability (HA) failover errors: HA agent on server in cluster cluster in datacenter has an error Insufficient resources to satisfy HA failover. How can I get rid of this error? vSphere HA failover operation in progress in cluster TGCSNET-Vcenter1-Cluster in datacenter Datacenter-TGCSNET: 0 VMs being restarted, 5 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. @Rasulzade There is no impact to VMs when disabling and enabling HA. Place orders quickly and easily; View orders and track your shipping status; Create and access a list of your products; Manage your Dell EMC sites, products, and product-level contacts using Company Administration. Tom HA. Apparantly, all VMs are up&runnig (according to our monitoring), so I. After resolving network partition, some VM operations on linked clone VMs might failHA Cluster Introduction Part 4: How to continue operations by failover;. HA interacts directly to the ESXi HA Agent and will. Restarting VMs on different ESXi hosts is possible because the HA cluster has shared storage that maintains virtual machine disk (VMDK) files accessible to all the. 5 release of. vSphere HA is failed over the operation in progress in the cluster in data center. To isolate storage traffic from other networking traffic, it is considered best practice to use either dedicated switches or VLANs for your NFS and iSCSI ESX server traffic. VMware vSphere High Availability in detail Primary and Secondary Hosts in a VMware HA Cluster When you add a host to a VMware HA cluster, an agent is uploaded to the host and configured to communicate with other agents in the cluster. In the vSphere Client, browse to select the relevant vSphere HA cluster. Read this post to learn how you can deploy a cluster and configure HA in VMware vSphere. Thank you. A host stops. Click on the Set Up vCenter HA button to start the setup wizard. This patch is applicable to vCenter Server. 1 – Using the vSphere Web Client, highlight the vCenter Server name in Navigator and select the Configure tab. vSphere HA is failed over the operation in progress in the cluster in data center. When a failure is detected, the second virtual machine takes the place of the. How to fix it. If you have a cluster with 4 hosts and failover capacity set to 3, this means your cluster should be able to handle 3 host failures and run everything on the single node. By default, the alarm is triggered by the following events: com. The reason is that if one of the two hosts is placed into maintenance mode there is no failover host left available in the cluster. In this setup, the SAP system is installed on two nodes of a cluster. Name your new rule, and then select Virtual Machines to Hosts from the Type drop-down menu. Tom HA. vmware. Select the Hosts and Clusters view. vSphere HA is failed over the operation in progress in the cluster in data center. vSphere HA unsuccessfully failed over <virtual machine> on <slave hostname> in cluster HA_DRS_Cluster in Datacenter. Hosts in the cluster are monitored and in the event of a failure, the virtual machines on a failed host are restarted on alternate hosts. We're running vCenter 7. vSphere HA failover operation in progress in cluster {computeResource. In the vSphere Client, browse to the vSphere HA cluster. ConnectedToMaster: ExtendedEvent: Host connected to a vSphere HA master: com. . Creating a vSphere HA Cluster 33 vSphere HA Checklist 33 Create a vSphere HA Cluster in the vSphere Client 34 Create a vSphere HA Cluster 36 Configuring vSphere Availability Settings 37 Configuring Responses to Failures 38 Configure Proactive HA 41 Configure Admission Control 42. x /8. 2. Steps to fix vSphere HA failover operation in progress issue - YouTube. Reply. ensure your DNS is working properly. You can combine vSphere HA with vSphere Distributed Resource Scheduler (DRS) to protect against failures and to provide load balancing across the hosts within a cluster. . Using the vSphere Web Client. Resolution. :. Changing the default isolation response. Prerequisites for Upgrading vCenter Server High Availability Environments To ensure a successful upgrade of vCenter Server in a high availability (HA) environment, your environment must meet certain prerequisites before running the upgrade. ; Right-click all hosts in the. 0 Update 3 there has been the following reported issues. vc. HA initiated a failover action. I have a cluster consisting of two ESXi hosts. AndréThe solution of this warning is to turn OFF and turn ON the vSphere HA feature as follows: 1. vSAN is tightly integrated with VMware vSphere High Availability™. 4. Resolution. ) A. HA does not allow the operation. name}: {numBeingPlaced} VMs being restarted, {numToBePlaced} VMs waiting for a retry, {numAwaitingResource} VMs waiting for resources, {numAwaitingVsanVmChange} inaccessible Virtual SAN VMsNext are the actual steps that will create the HA cluster for us. Performance Result. By default, the alarm is triggered by the following events: com. vSphere High Availability cluster only supports ESXi 6. Recovering from Isolated vCenter HA Nodes If all nodes in a vCenter HA cluster cannot communicate with each other, the Active node stops serving client requests. Click vSphere HA located under Services. One of the things I inherited when I started my new role about 6 months ago was several Windows Failover clusters running on vSphere. Failure happens at the most inopportune times. Keeps the configuration of the cluster. Click OK. Resolution. The cluster reserves resources so that failover can occur for all running virtual machines on the specified number of hosts. Cause. 0 I see a warning "vSphere HA failover operation in progress in cluster XXX in datacenter DC YYY: 1 VMs being restarted, 0 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible Virtual SAN VMs". After the failover, you can verify that the Passive node has the role of the Active node in the vSphere Client. Prevent Unplanned Downtime with vSphere. vSphere HA failover in progress : Monitors the failover progress of vSphere High Availability. You can configure vSphere HA to designate specific hosts as the failover hosts. In most cases, performing synchronization first is best. Select the Configure tab. In the vCenter GUI, use the Hosts and Clusters view, Right-click the ESXi host and select Connection > Disconnect. Step 4: The configuration issues warning will disappear. Deselect the Turn On VMware HA option. This is a known behavior by design and is currently being reviewed by VMware. Using the vSphere Web Client. A vSphere HA failover is in progress. You can simulate failure of one or more hosts from a cluster (in vSphere) and identify how many: VMs would be safely restarted on different hosts. Cluster How can I get rid of this error? vSphere HA failover operation in progress in cluster TGCSNET-Vcenter1-Cluster in datacenter Datacenter-TGCSNET: 0. When this alarm is triggered, it means that one or more virtual machines failed to get powered on by a host in a cluster protected by HA. Click Edit. For many years, VMware vSphere and vSAN have provided users the ability to maintain high availability of an application in the event of an unexpected outage. See VMware online documents such as Troubleshooting VMware High Availability and the vSphere Troubleshooting Guide to resolve HA issues. This transfer process is called failover. Using the vSphere Web Client. Changing your network hardware or networking settings can interrupt the heartbeats that vSphere HA uses to detect host failures, which might result in unwanted attempts to fail over virtual machines. Important Note:- vSphere ESXi 7. log file and check if there are errors related to communication with vCenter. Resolution. When this alarm is triggered, it means that one or more virtual machines failed to get powered on by a host in a cluster protected by HA. name}: {numBeingPlaced} VMs being restarted, {numToBePlaced} VMs waiting for a retry, {numAwaitingResource} VMs waiting for resources, {numAwaitingVsanVmChange} inaccessible Virtual SAN VMs. vSphere makes it possible to reduce planned downtime, prevent unplanned downtime, and recover. This will reinstall the HA packages and fix any misconfigurations. Right-click the virtual machine that did not migrate to other host and click Edit Settings. vSphere HA is failed over the operation in progress in the cluster in data center. Thank you. Aria Operations for Apps; Photon OS; Edu & Cert Toggle submenu. an in-progress operation might be preventing. 0 components. There are several configuration options described in the following sections that can be used to overcome. By default, VMware HA prepares for the worst-case scenario of the largest, most powerful host in. Select from the following configuration options. vmw. After patching ESXi to 7. Multiple partitions can occur in a cluster. Cluster Configure tab . VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. The failed VM stays disconnected until the host is rebooted and back online 😕 It doesnt get reconnected or restarted on another host. Log in to the Active node with the vSphere Client. In a stretched cluster configuration, both data sites are active sites. Click Advanced Options. My advice would be to make sure there are no long running tasks on a. failuredetectiontime . How can I get rid of this error? vSphere HA failover operation in progress in cluster TGCSNET-Vcenter1-Cluster in datacenter Datacenter-TGCSNET: 0 VMs being restarted, 5 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. 7 ESXi 6. When HA's Admission Control policy is set to "Number of Host failures the cluster will tolerate", HA has a very pessimistic view of your resources, as it has to be able to handle all possibilities. Click vSphere HA located under Services. In the vSphere Web Client, browse to the data center where you want the cluster to reside and click New Cluster. To disable/enable the vSphere HA in the vSphere Web Client:After a vSAN cluster fails with a loss of failover quorum for a virtual machine object, vSphere HA might not be able to restart the virtual machine even when the cluster quorum has been restored. 07-27-2023 01:09 AM. Select your cluster, Hosts and Clusters. Cluster. Click Failures and Responses and then expand Host Failure Response. To enable your cluster for vSphere HA, you must first create an empty cluster. If restarting the virtual machines is not possible, for example the failover hosts have failed or have. vmware. Click Edit. 2. If you run an operation to apply or remove NSX while vSphere HA configure operations are still in progress, NSX operations might queue up between the vSphere HA configure operations for two. 7 Update 3. If the slot size appears too high, click on the Resource Allocation tab of the cluster and sort the virtual machines. vSphere HA is failed over the operation in progress in the cluster in data center. To disable/enable the vSphere HA in the vSphere Web Client:"vSphere HA failover operation in progress in cluster CGI_Test_Cluster in datacenter Bremen: 1 VMs being restarted, 1 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs". In vSphere 6. vSphere HA Interoperability vSphere HA can interoperate with many other features, such as DRS and vSAN. “Use datastores only from the specified list”, but do not select any datastores from the list. Resolution. A clustered task is a Task Scheduler task that is registered on all cluster nodes. Cluster. Login to the vSphere UI for the vCenter(s) in question. vSphere HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. It is also important to enable host monitoring. vSphere HA failed to restart a. Step 2: vSphere HA is turned ON, toggle vSphere HA to OFF and wait for all hosts to complete unconfigured for HA. Cause.