6.4
Table Of Contents
- Administrator Guide
- Contents
- About This Book
- Getting Started
- Introduction
- Configuring vCenter Server Heartbeat
- System Administration and Management
- Server Protection
- Network Protection
- Application Protection
- Application Protection Overview
- Applications: Applications Tab
- Reset the Application Health Status
- View Application Status
- Setting the Application Timeout Exception
- Remove an Application
- Manually Start and Stop Applications
- Configuring Applications
- Application Maintenance Mode
- Reviewing the State of an Application
- Reviewing the Applications Log
- Filtering Application Log Entries
- Applications: Services Tab
- Applications: Tasks Tab
- Applications: Plug-ins Tab
- Status and Control
- vCenter Server Heartbeat Console
- About vCenter Server Heartbeat Console
- Work with Groups and Pairs
- Add, Edit, Move, and Remove Pairs in VCenter Server Heartbeat Groups
- Review the Status of vCenter Server Heartbeat Groups and Pairs
- Exit vCenter Server Heartbeat Console
- Shut Down Windows Without Stopping vCenter Server Heartbeat
- Controlled Shutdown
- vSphere Client Plug-in
- Uninstall vCenter Server Heartbeat
- Performance Protection
- Data Protection
- Alerts and Events
- Troubleshooting
- Troubleshooting Unexpected Behaviors
- Two Active Servers
- Two Passive Servers
- Synchronization Failures
- Registry Status is Out of Sync
- Channel Drops
- Subnet or Routing Issues
- MaxDiskUsage Errors
- MaxDiskUsage Error Messages
- [L9]Exceeded the Maximum Disk Usage (VCChannelExceededMaxDiskUsageException)
- [L9]Exceeded the Maximum Disk Usage on the ACTIVE Server
- [L9]Exceeded the Maximum Disk Usage on the PASSIVE Server
- [L20]Out of Disk Space (VCChannelOutOfDiskSpaceException)
- Application Slowdown
- Poor Application Performance
- Both Servers Can Accommodate the Initial Load but the Load Has Increased
- One Server Can Provide Adequate Resource Support, but the Other Cannot
- Scheduled Resource Intensive Tasks
- Glossary
Reference Guide
30 VMware, Inc.
To configure failover
1Click Configure Failover to open the Server Monitoring: Failover Configuration dialog.
2 Type a new numeric value (seconds) in the Failover timeout text box or use the arrow buttons to set a new
value.
3 Mark or clear the check boxes to select the actions to take if the specified Failover timeout is exceeded.
4Click OK.
Configuring Response Times
vCenter Server Heartbeat also allows you to configure the following timeouts:
Time to wait following channel connection before starting replication
Time to wait following channel disconnection before stopping replication
To configure response times
1Click Configure Response Times to open the Server Monitoring: Response Times dialog.
2 Type new numeric values (seconds) into the text boxes or use the arrow buttons to select new values.
3Click OK.
Configuring Split-Brain Avoidance
Split-brain Avoidance ensures that only one server becomes active if the VMware Channel connection is lost,
but both servers remain connected to the Principal (Public) network. Split-brain Avoidance works by pinging
from the passive server to the active server across the Principal (Public) network. If the active server responds,
the passive server does not failover, even if the VMware Channel connection is lost. WAN installations require
different IP addresses on the Principal (Public) network for the local and remote servers.
To enable Split-brain Avoidance, open the Server: Monitoring page in the vCenter Server Heartbeat Console,
click Configure Failover, and select Prevent failover if channel heartbeat is lost but Active server is still
visible to other servers (recommended).
You must configure Management IP addresses on the Principal (Public) network cards of each server to allow
the passive server to send a ping. Management IP addresses are additional IP addresses assigned to the
network card connected to the Principal (Public) network. They are used to allow the passive server to
communicate, because unlike the Principal (Public) IP address, they are not filtered. This allows the passive
server to send pings, and is also required to allow the passive server to send email alerts. To configure a
Management IP address on the Principal (Public) network card, follow the procedure below.
To configure a Management IP address:
1 Open the network properties for the Principal (Public) network connection.
2 Double-click TCP/IP to display the properties.
3Click Advanced.
4 Enter an additional (currently unused) IP address in the table.
5 Reposition the IP addresses in the list so that the additional (Management) IP address appears first, and
the Principal (Public) network address (by which clients connect to the server) appears second.
6Click OK on all three dialogs to accept the configuration changes to the network connection.
7 After completing all of the steps click Next or Finish.
The active server must respond within the time period value specified in the Failover timeout to prevent a
failover from occurring. If the active server responds in a timely manner, the failover process ceases. If the
active server does not respond, the failover proceeds.