6.5.1
Table Of Contents
- vSphere Availability
- Contents
- About vSphere Availability
- Business Continuity and Minimizing Downtime
- Creating and Using vSphere HA Clusters
- Providing Fault Tolerance for Virtual Machines
- vCenter High Availability
- Plan the vCenter HA Deployment
- Configure the Network
- Configure vCenter HA With the Basic Option
- Configure vCenter HA With the Advanced Option
- Manage the vCenter HA Configuration
- Set Up SNMP Traps
- Set Up Your Environment to Use Custom Certificates
- Manage vCenter HA SSH Keys
- Initiate a vCenter HA Failover
- Edit the vCenter HA Cluster Configuration
- Perform Backup and Restore Operations
- Remove a vCenter HA Configuration
- Reboot All vCenter HA Nodes
- Change the Appliance Environment
- Collecting Support Bundles for a vCenter HA Node
- Troubleshoot Your vCenter HA Environment
- Patching a vCenter High Availability Environment
- Using Microsoft Clustering Service for vCenter Server on Windows High Availability
- Index
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VMware vCenter
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HA Alarms and Events on page 77
If a vCenter HA cluster is in a degraded state, alarms and events show errors.
vCenter HA Clone Operation Fails During Deployment
If the vCenter HA conguration process does not create the clones successfully, you have to resolve that
cloning error.
Problem
Clone operation fails.
Cause
Look for the clone exception. It might indicate one of the following problems.
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You have a DRS-enabled cluster, but do not have three hosts.
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The host or database connection is lost.
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Not enough disk space.
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Other Clone Virtual Machine errors
Solution
1 Resolve the error that caused the problem.
2 Remove the cluster and start conguration again.
vCenter HA Deployment Fails with an Error
Deployment failures can be caused by conguration issues, especially problems with the networking setup.
Problem
You start a vCenter HA cluster conguration, and it fails with an error. The error might show the cause of
the problem, for example, you might see an SSH Connection Failed message.
Solution
If deployment fails, take steps to resolve the network issues.
1 Verify that the Passive and Witness nodes can be reached from the Active node.
2 Verify that routing between the nodes is set up correctly.
3 Check network latency.
Troubleshooting a Degraded vCenter HA Cluster
For a vCenter HA cluster to be healthy, each of the Active, Passive, and Witness nodes must be fully
operational and be reachable over the vCenter HA cluster network. If any of the nodes fails, the cluster is
considered to be in a degraded state.
Problem
If the cluster is in a degraded state, failover cannot occur. For information about failure scenarios while the
cluster is in a degraded state, see “Resolving Failover Failures,” on page 76.
vSphere Availability
74 VMware, Inc.